454 Heads Question
07-27-2004, 07:41 AM
#1
Staging Lane
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454 Heads Question My 68 RS/SS has a 454 out of a 1985-1988 Truck, therefore, it has the "peanut port" heads.
I want to change the heads but can't afford to anytime soon.
A friend of mine has offered up a set of 454 Marine heads (Cast# 10114156)...91-up...oval...OPEN...Gen.V & VI 454, 118cc chamber I: 2.07"
E: 1.72"
.
I've heard they have larger water jackets and stainless steel valves and springs.
I don't know any other differences and can't find any info anywhere.
Question is, would I gain anything by putting these on?
These are what's in it now
14092360 454 85-89 2.06/1.77 Open chamber Oval port
I want to change the heads but can't afford to anytime soon.
A friend of mine has offered up a set of 454 Marine heads (Cast# 10114156)...91-up...oval...OPEN...Gen.V & VI 454, 118cc chamber I: 2.07"
E: 1.72"
.
I've heard they have larger water jackets and stainless steel valves and springs.
I don't know any other differences and can't find any info anywhere.
Question is, would I gain anything by putting these on?
These are what's in it now
14092360 454 85-89 2.06/1.77 Open chamber Oval port
Last edited by TransAmaniac; 07-27-2004 at 07:48 AM.
07-31-2004, 04:44 PM
#2
oval ports are best for low end torque. but the 454 you got is a low compression motor. i beleive along the lines of 8.5.1 which is perfect for a whipple supercharger. heads and blower on that motor would be plenty..hey if you got any other big block questions holler at me..
08-02-2004, 04:47 AM
#3
Staging Lane
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Originally Posted by ex-SS-ve
oval ports are best for low end torque. but the 454 you got is a low compression motor. i beleive along the lines of 8.5.1 which is perfect for a whipple supercharger. heads and blower on that motor would be plenty..hey if you got any other big block questions holler at me..
09-02-2004, 09:52 PM
#4
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Hey Ron,when you swap heads on the big block be sure to check which head gasket you need because the waterjacket holes are a little different shaped.They will fit but be sure of the gaskets!! 
What I mean is gen 4 to say gen 5 or 6 head 
What I mean is gen 4 to say gen 5 or 6 head 