please help me figure out CR
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Joined: Oct 2002
Posts: 132
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From: memphis
Car: 67 camaro ( project )
Engine: 6.7 408 n a snail
Transmission: 4l80 - stalled
Axle/Gears: 3.25 - narrowd tci kit 9 inch
please help me figure out CR
i was given a 350 tbi motor out of a 92 full size truck so that i can rerplace my warn out 305
i want to put a set of 64 cc heads on the 350 block since the tbi heads are the worst ever designed
i know the tbi heads ar 72cc
so dropping to a 64cc head will bumpo my CR up
but to what?
i have been searching for the stock compression ratio for that truck with no luck as of yet.
ill be usuing a stock thickness headgasket too
thx!
i want to put a set of 64 cc heads on the 350 block since the tbi heads are the worst ever designed
i know the tbi heads ar 72cc
so dropping to a 64cc head will bumpo my CR up
but to what?
i have been searching for the stock compression ratio for that truck with no luck as of yet.
ill be usuing a stock thickness headgasket too
thx!
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Joined: Oct 2008
Posts: 6,319
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: please help me figure out CR
your knowledge is wrong. a '92 TBI 350 comes with 65cc heads, so if you go 64cc (not Vortec, those are really closer to 61cc) and use FelPro steelshim head gaskets, with the '92's dished pistons, you should have around 9.2:1
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RedLeader289
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May 28, 2019 01:47 PM
