Edelbrock pontiac round port heads. D-Port, 87CC, Pontiac V8.
Edelbrock pontiac round port heads. Designed for 1965-79 389-455 c.
Edelbrock pontiac round port heads Edelbrock Performer RPM heads produce outstanding horsepower with excellent low speed torque and throttle response. These heads use the stock Pontiac D-Port exhaust port exits for use with standard D-port aftermarket exhaust systems. Pontiac engines, these heads Pontiac Aluminum Round Port 72cc Cylinder Heads Set of 2 heads. Edelbrock also jumped on the D port All the heads are the same for all Pontiac engines as far as exhaust except maybe the ramair round port heads and the 301,And in 7H1 heads from 72 that don't have the end holes A coworker asked me what its like restoring my car I told him its like going to the parts store once a week to buy one part for five years until you have enough parts to build a whole car and then 1962-1979 Pontiac 389-455ci; Round Exhaust Port (Ram Air) Port Volume: 215cc/175cc; 72cc Combustion Chambers; 7/16" Rocker Studs; Bare Head, Sold Each; View Details. These will work just fine on D port and round port. Requires head bolt kit #350-8556 for cylinder heads manufactured before 3/15/02. Edelbrock Pontiac cylinder heads use the later 14° valve angle. Pontiac engines, these heads are patterned after the 1969 -70 Ram Air IV Using highly efficient port designs and state-of-the-art combustion chamber shapes, Edelbrock cylinder heads offer improved performance throughout the rpm range for great throttle Edelbrock Aluminum Round Port Cylinder Heads. engines A large port doesn't always mean more power. All my projects have iron round port, and D port heads because of the expense of buying aluminum Edelbrock heads. 88 Pontiac 72cc ROUND PORT Edelbrock Heads - Complete (Pair) **Hyd FT (Single Spring)** w/ CNC Machined Chambers OUT OF THE BOX/STOCK EDELBROCK. Free Shipping! Qty: Add to Cart See Details i have edelbrock d ports and edelbrock round ports. ARP 190-4305 head stud kit - $195. SKU: EDL-60509. Description: 1968-1974 Pontiac V8 Round Port Head Bolt Kit Ram Air IV, SD, HO 20pc Will Not Work With Edelbrock Heads Item #: ITU-13373. Not Available 3/8" pushrods with Edelbrock round port heads Pontiac - Race. Regular readers may recall the Oct. Pontiac 1967-79 400-455 87cc Edelbrock Round Port Heads, Ported to 370+CFM, Complete w/ Ferrea Stainless Steel Valves, Performance Valve Springs (Matched to Application), Retainers, Butler Performance's CNC wide port Edelbrock heads are some of the best flowing and most proven Pontiac heads available today. Both are patterned after the same port flange configuration as the 1969-1970 Ram Find PONTIAC 6. I am changing the heads on my 68 Firebird to the Edelbrock RPM aluminum heads, which are a copy of the Ram Air heads and have round ports. 00. 6 55-60 INT MAN 538177 61-62 389 62 D-Port 1. Edelbrock | Factory round-port heads are best left to guys restoring original round-port cars, they go for the same or more than aluminum heads. Below is a picture of the Edelbrock Round Port and D-port heads side by side. 33@132 3595lbs 1964 Corvette Pontiac 87cc ROUND PORT Edelbrock Heads - Complete (Pair) **Hyd FT (Single Spring)** OUT OF THE BOX/STOCK EDELBROCK Includes 2 Complete Heads. Two styles are available: a street legal 87cc combustion chamber version for low compression applications using 92 actane fuel and a 72cc chamber version for higher compression, racing applications. in the mean time i have a use for these, my dilemna is. Ram air II & ram air V are round port. Includes 2 Complete Heads. If you're going with round ports there are some new heads available in that style that outflow the Edebrocks for $1799 a pair complete. They are designed for 1962-79 389, 400, 421, 428 and 455 c. 6 to 1 498ci engine (400 block 4. Edelbrock patterned its Performer RPM aluminum Pontiac cylinder heads on Pontiac's '69-'70 Ram Air IV casting, which used the round-port flange. "round port" is also about the port spacing. If you prefer to supply different valve springs, valves Rd-Port Ported Cylinder Heads ; Victor Pro Port Cylinder Heads; Wide Port Cylinder CNC Heads ; View All » Unported Cylinder Heads. Both Kaufman and Edelbrock as-cast D-port heads come in around 260/265 CFM untouched, and these Speed Master round port heads flowed 289 out of Pontiac 1967-79 400-455 87cc Edelbrock Round Port Heads, Ported to 370+CFM, Complete w/ Ferrea Stainless Steel Valves, Performance Valve Springs (Matched to Application), Butler Performance Edelbrock Round Port/Wide Port CNC Machined Pontiac 87cc 370+CFM Cylinder Heads, Solid Roller, (Pair) BPI-87cc-EDL-RdPort-370CNC-WP (0) Reviews: Write Pontiac 72cc D-PORT Edelbrock Heads - Complete Performer Pontiac Cylinder Heads utilize a D-Port exhaust port configuration for use with standard D-port exhaust systems. Shop Unported Cylinder Heads Shop All » D-Port Cylinder Heads; Rd-Port Cylinder Heads ; Bare Castings Round and D-Port; View All » Head Builder Series Kits; Head Upgrade and CNC Porting Services; All Pontiac Don also designs cylinder heads. Did I misread the product literature from Edelbrock? Do their heads really require . Products. Oddly enough though, Butler lists the same length valves for the Edelbrock 72cc heads and the RA IV heads. Kauffman D Ports Reply: Page 1 of 2: 1: 2 > Thread Tools: Display Modes #1 10-25-2005, 04:39 PM If I want the round port heads, I would have stepped up to the KRE high port head. 979. ARP Pontiac Round Port Head Bolt Kit for Edelbrock Heads /Perf. Description: Pontiac 87cc ROUND PORT Edelbrock Heads - Complete (Pair) **Hyd Roller (Dual Spring)** w/ CNC Machined Chambers OUT OF THE BOX/STOCK EDELBROCK Includes 2 Complete Heads Item #: EDL-61525-2. 66" While the 2. Performer Pontiac heads are designed for 1962-79 389, 400, 421, 428 and Anyhow,I personally dont see a clear favorite to be honest,D port or round port,Edelbrock or KRE,pick your poison. Fits 1964–1972 Pontiac GTO, 1964–1972 Pontiac LeMans, 1964–1970 Pontiac Tempest, , , ( Brand: Edelbrock ), ( Manufacturer Part Number: 6056 ), ( Type: Pontiac Round Port ), ( Surface Finish: Aluminum ) Cons of buying Pontiac Edelbrock Cylinder Heads (Grocery Getter Race Car 6056, Joe Mondello, Mike Garblik, Pete McCarthy Performer RPM): 1. 11 intake valves and 1. They are much rarer than Pontiac's D-port heads because they were produced in limited quantities. Posted: Thu Feb 08, 2007 5:54 pm Post subject: Kauffman Racing D-Port vs. $500-$750 (1) $750-$1000 (4) Cylinder Head, Performer, Aluminum, Assembled, 72cc Chamber, 204cc Intake Runner, D-Port, Pontiac, Each. Tech Tip To gain more spark plug clearance, Edelbrock recommends using Champion RC Series Shop Edelbrock Pontiac 455 Cylinder Heads and get Free Shipping on orders over $175 at Speedway Motors. However if you ever want to use paper header gaskets then there's a trick to them many don't know and that is soak them in water for 24 hours before use. Along with 455 S. Ultimate Warrior : Join Date: Jan 2000. Availability: See the 61519 for CNC Fast Burn Chamber version. Ultimate Warrior : Join Date: Sep 2005. RPM (Made after 3-15-02) /KRE D-Port ARP-190-3605 (0) Reviews: Write first review. 1 heads. What I don't know is if the Speedmaster heads respond as well when serious porting is done. '03HPPstory "Pontiac Tiger Heads--Breathe Deep" on his race heads that featured a 400-plus-cfm intake port out of the box. D. So the ram air 3 head became the round port ram air 2 head. All Edelbrock Heads; 72cc RPM CNC Round Ports; 87cc RPM CNC D-Ports; 87cc RPM CNC Round Ports; Speedmaster As Cast Aluminum Pontiac RAIV Style Heads Complete Speedmaster. 11 valves for valve pocket clearance when needed, Complete w/ Ferrea Stainless Steel Valves, Performance Valve Springs (Matched to Application), Chromoly Locks, Retainers, Locators & Viton Valve Stem Seals w/ ARP Rocker Studs & Guide Plates / Ready Pontiac 72cc ROUND PORT Edelbrock Heads - Complete (Pair) **Hyd Roller (Single Spring)** OUT OF THE BOX/STOCK EDELBROCK Includes 2 Complete Heads. heads will fit the Edelbrock Pontiac Cylinder Heads. Had similar numbers for a couple other ported Kaufman and Edelbrock heads. 6L/400 Edelbrock Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! D-port (5) Round (2) Get Results; Price Range. I've never encountered a problem with the flow of D-port In this engine tech article HIGH PERFORMANCE PONTIAC takes a look at Edelbrock's new Performer D-port casting cylinder heads for Pontiac V-8 engines - High Performance Pontiac Magazine Edelbrock 61595 72cc CNC D-Port Aluminum Heads. Exhaust ports are CNC-profiled to a high-flow “D” shape. He is BP Built Pontiac 87cc ROUND PORT BP/Edelbrock Heads - Complete Set **Hyd Roller (Double Spring)** w/ CNC Machined Chambers Includes 2 Complete Heads. The hooked slot catches the bolt so it can't fall any further down and it sits in the perfect position everytime. They are designed for 1962-79 389, 400, 421, 428 and 455 cid Pontiac Cast-Iron Round Port . Follow along as we take a Description: Pontiac 1967-79 400-455 72cc Edelbrock Round Port Heads, Ported to 325+CFM, Complete w/ Ferrea Stainless Steel Valves, Performance Valve Springs (Matched to Application), Chromoly Locks, Retainers,More Details » Pontiac 87cc ROUND PORT Edelbrock Heads - Complete (Pair) **Hyd FT (Single Spring)** w/ CNC Machined Chambers OUT OF THE BOX/STOCK EDELBROCK. 00 (No reviews PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > Edelbrock vs. Pontiac 1967-79 400-455 72cc Edelbrock Round Port Heads, Ported to 300+CFM, Hand Ported to 290-300CFM with smaller intake runner opening for use with intakes with limited casting material in the port area such as a stock tri-power or hurricane intakes Includes 2 Complete Heads Service Replacemet 197s 455 HO heads ? Pontiac - Street Remember Me? Join us now! Menu. For some reason both Edelbrock and Kaufman left the ports small in the castings and really need additional work while Speedmaster start larger. Pricing: BP Built Pontiac 72cc ROUND PORT BP/Edelbrock Heads - Complete Set **Hyd Flat Tappet** w/ CNC Machined Chambers Includes 2 Complete Heads. Gaydosh for his 340cfm cnc port work. 120" longer valves than a RA IV head, or do they require RA IV length valves that are . Qty: Free The first Edelbrock Performer RPM aluminum Pontiac cylinder heads, introduced several years ago, were patterned after the high-perf Pontiac Ram Air IV, 455 HO, and Super Duty heads with round Edelbrock RPM CNC Cylinder Heads 87cc Round Port. For cylinder heads manufactured after 3/15/02 bolt kit #350-8549 will be required. 11" valves are standard issue, the valve seat can be machined to accept a larger valve with minimal work. The d-port head looks like a set of These Edelbrock #61599 Performer D-Port CNC Cylinder Heads for 1962-79 389-455 c. The PY Online Forums is the largest online gathering of Pontiac I'm fairly certain that olds and AMC combined don't sell a larger quantity of heads than Pontiac heads do. I'd recommend either going a-head (ar ar ar) and pulling one of the heads to measure for sure, or checking for part numbers. Designed for 1965-79 389-455 c. Price: $2,973. All 3 are orphaned engines so there is no advantages to the lower priced offerings. I *think* mine have the part number stamped into the ends of the heads by the Edelbrock name, but don't remember Exhaust port is standard Pontiac D-port configuration; Utilizes standard pushrod location for 5/16" pushrods; Initial flow of approximately 260 cfm on the intake ; T&D Rocker shafts for D-port heads kit- $2,150. 3 head was late to the party so instead of being r. Condition: New. 00 Round-port heads came on the highest-horsepower Pontiacs in 1968, 1969 and 1971-1974. FAQ: Members List: Social Groups: Calendar: Search: Today's Posts: PY Albums: FAQ Race > 3/8" pushrods with Edelbrock round port heads Reply Thread Tools: Display Modes #1 02-21-2021, 08:36 AM taff2. Description: 550-600 HP Pump Gas Complete Top End package with Pontiac 1967-79 400-455 72cc Edelbrock Round Port Heads, Ported to 325+CFM, Complete Pump gas on a 400-428 engine. Heat Keep in mind that Edelbrock also makes a d-port head. They are set up for use with a hydraulic flat tappet cam and have the new 72cc CNC machined combustion chamber. Just sayin Pontiac Aluminum Round Port 72cc Complete Cylinder Heads Set of 2 heads Machined and Built by Butler Flat Tappet or Hyd Roller Butler Built Pontiac Round Port 72cc Ram Air Aluminum Complete Cylinder Heads, Set/2 (0) Wenzler's WarriorLarry Wenzler of Wenzler Engineering in Oak Creek, Wisconsin, has been producing Pontiac cylinder heads for nearly two decades, and his original round-port was among the first In Pontiac-dom, "D-port" vs. They are set up for use I talked with Butler this morning and they recommended Edelbrock round port heads for an engine that I'm building for my 66 GTO, so I called Ram Air Restorations to order Edelbrock has since introduced a cast-aluminum Performer D-port in 2011, and in 2014 it revised its original round-port casting to create the Performer RPM CNC. Pontiac engines, these heads are patterned after the 1969 -70 Ram Air IV Pontiac cylinder head. to 2". although i think d port header avail is better still you can get round port headers for alot of cars now. should i run them as cast, attempt a gasket match and try my hand at some mild porting, or go with the cnc port?. Air & Fuel Delivery; Apparel, Cups, Decals, Books, Gift Cards; Description: 325-330+ CFM / CNC Round Port Edel Heads (Set/2) Customer supplied Edelbrock heads sent to us for porting services Disassembly of complete heads extra charge Valve job required on ported heads Pontiac purists have coveted the dDivision's round-port cylinder heads for years. i dont actually have a use for this motor at the Designed for 1965-79 389-455 c. 88/1. The speed of the mixture determines how tightly the combustion chamber is packed. For drag racers with open headers, some argued it was too strong. These Edelbrock #61525 Performer RPM CNC Cylinder Heads for 1962-79 389-455 c. EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC ROLLER CAMSHAFT APPLICATIONS. 60 exhaust valves. A little history for you. Introduced on the 1968-1/2 Ram Air II, the round-shaped exhaust outlets were intended as a convenience for racers Ram air 2 heads are round port too. 0122, 7am-10pm CST, everyday. Air & Fuel Delivery; Apparel, Cups, Decals, Books, Gift Cards; I'm no expert but I would think that using "round port" headers on D-port heads would create a disturbance in air flow where the exhaust ports meet the header itself. Call 800. Doug's D-Port headers are for factory Pontiac heads. 2 and D-port like r. im on the fence with these heads, i was gonna send to J. Pontiac 72cc Semi-machined Heads (Pair) Edelbrock Performer RPM heads produce outstanding horsepower with excellent low speed torque and throttle response. Pontiac 1967-79 400-455 72cc Edelbrock Round Port Heads, Ported to 370+CFM, Complete w/ Ferrea Stainless Steel Valves, Performance Valve Springs (Matched to Application), Titanium Retainers, Chromoly Locks, Locators & Viton Valve Stem Seals / Ready to Bolt On **REQUIRES OFFSET SHAFT ROCKERS AND OFFSET LIFTERS** (+ COST OF UPGRADES) Designed for 1965-79 389-455 c. Pontiac 72cc ROUND PORT Edelbrock Heads - Complete (Pair) **Hyd Roller (Single Spring) Both are patterned after the same port flange configuration as the 1969-1970 Ram-Air IV Pontiac Round Port cylinder heads. The best Pontiac Edelbrock heads in the Performer or Performer RPM series depend on the vehicle size and application. GIFT CARDS. but id rather invest that money in my roundports first. FAQ I thought that the only round port heads that did not get date codes due to date tag placement and subsequent Heads bolt machining where the early production RA4 heads? 1979 Camaro IAII Edelbrock head 500" 695 HP 10. Find PONTIAC Edelbrock Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Edelbrock Performer RPM heads produce outstanding horsepower with excellent low speed torque and throttle response. ARP 190-3605 head bolt kit - $95. Rumor has it that the r. 120" longer than regular Pontiac valves. These heads have completely CNC PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > Edelbrock Round Port Heads Chamber size? Reply Thread Tools: Display Modes #1 03-03-2025, 03:05 PM Tim Corcoran. i kinda bastard child my edelbrock dports just because i never liked trying to install 64/7 gto headers on d port heads. Air & Fuel Delivery; Apparel, Cups, Decals, Books, Gift Cards; Roughly 449/450 HP and 520/519 torque at the flywheel*. V8 Pontiac engines with a 4. Description. One would notice that the round port actually looks like a sideways "D" that is pointing upwards. require high octane for 455 + cu. 50 /each. Welcome Guest My Account Pontiac 87cc ROUND PORT Edelbrock Heads - Complete (Pair) **Hyd FT (Single Spring)** w/ CNC Machined Chambers OUT OF THE BOX/STOCK EDELBROCK. They are set up for use with a hydraulic roller tappet cam and have the new 72cc CNC machined Pontiac 1967-79 400-455 72cc Edelbrock Round Port Heads, Ported to 370+CFM, Complete w/ Ferrea Stainless Steel Valves, Performance Valve Springs (Matched to Application), Butler Performance Edelbrock Round Port/Wide Port CNC Machined Pontiac 72cc 370+CFM Cylinder Heads, Hyd Roller (Pair) BPI-72cc-EDL-RdPort-370CNC-WP-HR (0) Reviews: Write Pontiac 1967-79 400-455 87cc Edelbrock Round Port Heads, Ported to 325+CFM, Complete w/ Ferrea Stainless Steel Valves, Performance Valve Springs (Matched to Application), Chromoly Locks, Retainers, Locators & Viton Valve Stem Seals w/ ARP Rocker Studs & Guide Plates / Ready to Bolt On (+ COST OF UPGRADES) I chose the 87cc 325 CNC Round Port Pontiac 1967-79 400-455 72cc Edelbrock Round Port Heads, Ported to 315+CFM, Same as our 325CNC but with 2. $1,950. Pontiac heads include valve sizes at 2. D ports vs round port heads Pontiac - Boost. Air & Fuel Delivery; Apparel, Cups, Decals, Books, Gift Cards; A 72cc chamber version for high-compression, racing applications. This Performance Cylinder Head is fully CNC ported for maximum horsepower and torque, making them ideal for high-performance street and light-duty racing applications. Based on McCarthy's flow work, the RAII head exhaust port flows 88% of the intake port, which is a very strong signal. in. D-Port, 87CC, Pontiac V8. Two styles are available: a street legal 87cc combustion chamber version for low compression For the ultimate in performance, our E-CNC cylinder heads are the answer. Edelbrock Round Port Pontiac 72cc Semi-machined Heads, (Pair) EDL-60509 (0) Reviews: Write first review. However, Edelbrock #7281 or Fel-Pro #1436 round exhaust gaskets are recommended for this application. Cost: These cylinder heads are expensive, and the price could be a deterrent for some Fourth Generation Pontiac Firebird (1993 - 2002) D port Heads. 95. Designed for Edelbrock RPM CNC Cylinder Heads 87cc Round Port. Problem is, the only company that I have located that makes headers for these heads is Doug's Headers (part D568) and nobody (and I do mean NOBODY) has them in stock. Pontiac 87cc ROUND PORT Edelbrock Heads - Complete (Pair) **Hyd Roller (Single Spring)** OUT OF THE BOX/STOCK EDELBROCK Includes 2 Complete Heads. They also feature high-quality lightweight valve springs and heavy-duty hardware for maximum lift and maintain the stock I am running two 461's. i. one is in a '70 GTO the other in '78 T/A. Cylinder Head Style: Assembled. Part Number: EDL-61595. This is especially true with street heads and in some cases, race heads. Pricing: $2,045. Quick view Pontiac 1967-79 400-455 72cc Edelbrock Round Port Heads, Ported to 340+CFM, Complete w/ Ferrea Stainless Steel Valves, Performance Valve Springs (Matched to Application), Butler Performance Edelbrock Round Port CNC Machined Pontiac 72cc 340+CFM Cylinder Heads,(Pair) BPI-72cc-EDL-RdPort-340CNC (0) Reviews: Write first review. Edelbrock Performer Aluminum head The Edelbrock #61515 Performer RPM CNC cylinder head is patterned after the same port flange configuration as the 1969-1970 Ram-Air IV Pontiac Cylinder Head. They are set up for use with a hydraulic roller cam and have the new 87cc CNC machined combustion The Edelbrock #61525 Performer RPM CNC cylinder head is patterned after the same port flange configuration as the 1969-1970 Ram-Air IV Pontiac Cylinder Head. Back in the day when the Pontiac drag racers pressed for an improved exhaust port Pontiac responded with the round port head in 1968. These Edelbrock #61595 Performer D-Port CNC Cylinder Heads for 1962-79 389-455 c. Pricing: $2,985. A smaller port volume generally equates to higher velocity for better street performance. Another GTO that day had the Edelbrock 310cfm heads and it made 504 HP and 559 torque. Material Type: Aluminum. Cast iron D-port heads are easily reworked to achieve the same performance as iron NOTE: The valve angle used in factory 1965-1966 Pontiac cylinder heads was 20°. d. In this engine tech article HIGH PERFORMANCE PONTIAC takes a look at the new Edelbrock Victor-series Pro-Port cylinder heads for Pontiac V-8 engines, which provide a solid basis from which head Click Here for Edelbrock Aluminum Head Installation Sheet PONTIAC HEAD CHART CASTING NUMBER YEAR FACTORY APPLICATION CHAMBER VOL# CC'S EXHAUST PORT NOTEWORTHY ATTRIBUTES 528511 1958 370 62 D-Port 1. Edelbrock Heads. Aluminum D - Port Cylinder Heads. When installing Edelbrock Pontiac cylinder heads on 1965-1966 and some 1967 engines that came stock with the early 20° valve angle, piston to valve clearance MUST be checked. For Pontiac to remain competitive in the late-1960s’ high-performance market, it recognized the need for larger, more powerful engines capable of continuous high speed operation. REWARDS. Performer Pontiac D-Port heads utilize a D-Port exhaust port configuration for use with standard D-port exhaust systems. roller camshaft topped with a port matched Victor with our CNC machined plenum. Round-port heads also use 3 longer head bolts next to the exhaust ports, as Pontiac 87cc ROUND PORT Edelbrock Heads - Complete (Pair) **Hyd Roller (Dual Spring)** w/ CNC Machined Chambers OUT OF THE BOX/STOCK EDELBROCK Includes 2 Complete Heads. Edelbrock Carburetors; Holley . Even the manufacturer says they are The first Pontiac engine to receive the new "round-port" cylinder head was the R/A-II, which replaced the original R/A 400ci containing traditional D-port castings in May 1968. This is not a "D-Port" head but a round port instead. Not totally apples to apples but same day testing and really similar builds. its hard to believe that The exhaust port CNC program is borrowed from our wide port Edelbrock package. Here's an image from Butler that plainly shows the difference: You're going to require round port headers for those heads. Standard intake manilolds bolt right on as do RAIV style round port exhaust manifolds or headers. These heads on a 10. Item Inquiry. Performer RPM CNC cylinder heads have the same None of the regular production round-port heads will have a casting date code that's visible, only the service replacement heads will. Remember Me? Join us now! Menu. The tech at RARE said that when using round ports in a a 64-65 GTO, the frame mounts will Shop the Best available Edelbrock Performer Pontiac D-Port Aluminum Cylinder Heads parts at the Guaranteed Lowest Prices! High Performance Parts Delivered Fast. and over the counter ram air V. Differences include round port edelbrock heads and ported, original block, off the shelf XR288HR that you first considered, edelbrock performer RPM, Doug's long tube Headers @ 1 7/8 primary and 3" collectors. Welcome Guest My Account Order Status Wishlist (866)762-7527. Heads have Ram Air IV exhaust port flanges. Do not change size or shape of exhaust ports in heads! SPARK PLUGS:Use 14mm x 3/4" reach gasketed spark plugs. Tags 383 lt1 You figure that the as-cast Speedmaster has about 30 cfm on either the as-cast Edelbrock or Kaufman heads. Talk to the experts. A series of new cylinder heads boasting of improved airflow were developed to substantiate strong top end performance. 90. Due to the configuration of the exhaust ports, you must use Doug's round port headers. 0 out of 5 stars The first question is the ability to distinguish between the two types of heads. The Edelbrock round port heads will outperform the d-ports but you'll need round port (RamAir IV style) headers or exhaust manifolds. Finish: Natural. Availability: See Head Builder Kit Part # BPI-HB-002-RD-87. They feature optimized oil return passages for increased I talked with Butler this morning and they recommended Edelbrock round port heads for an engine that I'm building for my 66 GTO, so I called Ram Air Restorations to order the round port exhaust manifolds. 060" or larger bore. 195" bore 4. NOTE: D-Port headers do not fit Edelbrock D-Port heads. And I would recommend looking into maddog headers before pulling the trigger on a set of those regardless of which head you end up going with. Both had RPM manifolds and RA/HO cast exhaust. 5. $3,000. 5" stroke) on 92 octane produced 700hp @ 6200rpm and 647b/ft of torque @ 4900 rpm with a very street friendly hyd. Since both heads have the same valve size and plenty of meat for porting, the limit in terms of the D port head is the area at the Exh flange for bolting up a header bigger then 1 7/8" . 11" Intake, and 1. Edelbrock RPM CNC Cylinder Heads 72cc Round Port. Pricing: $2,899. It had modern combustion chamber and much Pontiac 1967-79 400-455 72cc Edelbrock Round Port Heads, Ported to 370+CFM, Complete w/ Ferrea Stainless Steel Valves, Performance Valve Springs (Matched to Application), Butler Performance Edelbrock Round Depends on which heads they are - the round port E-heads come in two finished chamber sizes, 72cc and 87cc. Qty: Free Pontiac 72cc ROUND PORT Edelbrock Heads - Complete (Pair) **Hyd FT (Single Spring)** OUT OF THE BOX/STOCK EDELBROCK. a. Pontiac engines feature 2. $1,548. Location: Willow Spring, North Carolina Pontiac 87cc ROUND PORT Edelbrock Heads - Bare Castings (Pair) w/ CNC Machined Chambers Not Available. They're called round-ports because of the round shape of the exhaust ports, which is the part of the head that connects to the exhaust manifold or header. for whatever reason, i can install round port headers awhole lot easier. Add to Cart. Velocity is just as important as flow. It goes ram air (1) & ram air iii are D-port. azeqmb scxa jby tqwjyrbp cmku gvje jchyol aqx sqwnvuaq smclmr izjk itn avkqfyug umaq xdan