Skip White Performance a BBC Heads
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
While you seem to enjoy bashing Americans, some people believe otherwise. You sure don't mind the freedoms this country offers you, but when it comes to appreciating it, you have no problem supporting a country where people do NOT have these freedoms. While I know unions have their issues, I will stick with supporting my fellow Americans. I guess you have the "freedom" to do otherwise. Thanks.
DO MA NEU!
Racer
Joined: Oct 2006
Posts: 435
Likes: 18
From: Florida
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Here is the deal. You can buy those heads. You will need new springs and set them up. Likely retainers as well. You will need studs. You will need guideplates. You know the flow and castings are not the best. You know the parts used and where they were made. You know they are not the best option, ports are big for a relatively stock 454 and no compression increase. Or you can go with these with free shipping set up with roller springs, guide plates, studs, better flow through a smaller port and ready to go with about 1/2 point compression increase. Add everything up. The price difference is there but not as big as it would seem at first glance for the quality difference, as cast chambers and ports vs CNC Chambers and porting.
AFR 265 Ports flow 342/274 @ .600 lift, enough to support 600 HP with great port velocity for bottom end and midrange power.
Pro Comp 320 flows 331/251 @ .600 lift with a 55 cc bigger port.
Can't find flow info on the 300 but it is the same casting as their 320 with ovals instead of rectangular ports so knock some off the above numbers.
http://www.summitracing.com/parts/af...make/chevrolet
AFR 265 Ports flow 342/274 @ .600 lift, enough to support 600 HP with great port velocity for bottom end and midrange power.
Pro Comp 320 flows 331/251 @ .600 lift with a 55 cc bigger port.
Can't find flow info on the 300 but it is the same casting as their 320 with ovals instead of rectangular ports so knock some off the above numbers.
http://www.summitracing.com/parts/af...make/chevrolet
Last edited by 63mako; Dec 18, 2014 at 12:51 PM.
Drifting
Joined: Jul 2013
Posts: 1,299
Likes: 93
From: Tri-Cities TN
The brodix RR Oval works very well on 427 to 468 Cid that will see mid 6000 rpm range. The heads work well on a 489 to 505 for a max of around 6200 rpm.
Most don't have a $1200 Sunnen bore gauge for guides. With one of these all the surprises are found.
Most don't have a $1200 Sunnen bore gauge for guides. With one of these all the surprises are found.
Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
I wouldn't even have an issue with buying the Chinese stuff, if it was quality. What concerns me is the day when as a country we've forgotten what quality is and inferior products become the norm. It's as simple as Christmas lights. I still have a set that belonged to my mother, yet when I end up buying additional lights from the import stuff, they are lucky to make the second season.
I do a lot of gun repair, I am finding that some of the stainless that's imported has enough carbon mixed in it to rust in spots. If they can't produce metal well enough to make pistol slides why should I trust the metal they use in cranks, pistons, rods and heads?
I do a lot of gun repair, I am finding that some of the stainless that's imported has enough carbon mixed in it to rust in spots. If they can't produce metal well enough to make pistol slides why should I trust the metal they use in cranks, pistons, rods and heads?
Drifting
Joined: Jul 2013
Posts: 1,299
Likes: 93
From: Tri-Cities TN
An engine is a combination of parts that are put together to reach a goal. A power goal of say 500HP at 6200 rpm there are a lot of choices that can reach that. 700HP from 468 their are a few parts that can do that.
Set you goals then work on list of parts to build a combination to reach the goal.
Set you goals then work on list of parts to build a combination to reach the goal.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Drifting
Joined: Jul 2013
Posts: 1,299
Likes: 93
From: Tri-Cities TN
That kind of power can be had with a good set of OEM iron heads and a hyd roller sir.
Drifting
Joined: Apr 2005
Posts: 1,916
Likes: 451
From: Central NJ
Melting Slicks
Joined: May 2002
Posts: 2,717
Likes: 121
From: Sulphur LA
St. Jude Donor '05-'06,'11,'13-'14,'16,'18,'19,'24, '25
While you seem to enjoy bashing Americans, some people believe otherwise. You sure don't mind the freedoms this country offers you, but when it comes to appreciating it, you have no problem supporting a country where people do NOT have these freedoms. While I know unions have their issues, I will stick with supporting my fellow Americans. I guess you have the "freedom" to do otherwise. Thanks.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
https://www.corvetteforum.com/forums...-tripower.html