Help with BB heads
Thread Starter
Advanced
Joined: Jul 2005
Posts: 78
Likes: 0
From: Florida
Help with BB heads
I'm building a bbc 454 +.30 with flat top pistons. I have a nice set of oval port heads #3986133. I know their are truck heads, but I can not find the chamber size. I have looked in many places but they just give year and what they were used on. Before I can order my hyd. roller cam I have to know a approx. size to figure out compression. I have a similar problem with the pistons. I will post a new thread on that. 
Thread Starter
Advanced
Joined: Jul 2005
Posts: 78
Likes: 0
From: Florida
NO not peanut. Large oval ports. No I don't know what they were on. The person I got them from was using them on a drag motor. I know they were used on the years form 68-90.
Last edited by Mr.L; Feb 10, 2006 at 12:18 PM.
Safety Car
Joined: Feb 2006
Posts: 4,855
Likes: 2
From: Columbia South Carolina
You could always CC them yourself, Its no too hard just use a syringe and a piece of clear plastic or you can still ball park it with out the plastic. Insert the spark plug for alittle more accuracy.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Originally Posted by 454_71Stingray
You could always CC them yourself, Its no too hard just use a syringe and a piece of clear plastic or you can still ball park it with out the plastic. Insert the spark plug for alittle more accuracy.
They are better then you think and with a little port work, the larger valves and they would out perform the rectangular heads on the street.
The late Lingenfelter claimed they were good up to about 600 horse.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Originally Posted by Mr.L
I stand corrected. I took set one out. On the outside 2.20-1.90.
