early 70's 3790010 heavy block vs late 70's lighter sbc

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prostude
Posts: 46
Joined: Mon Apr 26, 2010 11:16 am
Location: Syracuse NY

early 70's 3790010 heavy block vs late 70's lighter sbc

#1 Post by prostude » Wed Sep 01, 2010 9:06 am

anyone out there running a lot of HP on one of the newer sbc 350 lighter blocks made in the later 70's?
I was considering using one in a street/strip 6-71 application
but i am a little leary about doing that but that is what I have at this point?
Street car Old motor 10.80 @122 1.49 60' 355 6-71 stock gm heads stock rocker arms block hugger headers 1-5/8"x2.5" collector
the car ran in the 9's in the 60's with an olds motor.

mytmouz
Posts: 647
Joined: Thu Sep 21, 2006 1:00 am
Location: Pelahatchie,MS

Re: early 70's 3790010 heavy block vs late 70's lighter sbc

#2 Post by mytmouz » Wed Sep 01, 2010 4:12 pm

GM 1 piece rear seal bowtie block with a 4.000 bore recommends max bore of .030per GM. Sonic tested it, minimum wall thickness was less than a 71 010 350 circle track special we had lying around that was bored .080 ...
Trucks are for haulin...

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