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Heads that are shaved I believe

  
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Heads that are shaved I believe

 
1991ss355blazer 1991ss355blazer
I love my Chevy Chevette! | Posts: 1 | Joined: 03/13
Posted: 03/01/13
01:35 PM

Hello everyone new to this , but hopeing to find someone with some knowledge on a set of cylinder heads that I have purchase.All the articles that I have read on here everyone seems to be very helpfull, so here is my question.

I have a set of cylinder heads #3998993 that came on a motor that I purchased engine suffix code CMF Block casting #3970010.Was woundering how to tell if this set of heads had been shaved , just by looking at the thickness of the material below the intake ports on the intake side of the head seems to be really thin compared to what I am use to seeing ,are these the original heads for this motor and if these heads have been shaved do I have to have the intake shaved also , because the motor did not come with manifold.

appriciate any information anyone can give
Thanks and have a nice day.  

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 03/01/13
03:38 PM

Your going to have to CC the heads. The 993 are 76CC heads.
That would be the easiest way to find out.

Bob  

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 03/05/13
04:32 PM

Your CMF=RPO Code

Engine is a 350/ with 155 horse power

4 speed/ from California

FY=1975

Application is a Monte Carlo

Bob