Quote:
Originally Posted by baclay9
Most truck motors (if not all) are two bolt main. Passenger cars (nova's, ect) recieved the 4 bolt mains.
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In my experience it is the other way around. Many trucks with 4-bolts and cars with 2-bolts. Early rare high performance models like Z/28's got 4-bolts but otherwise even the SS cars got 2-bolt blocks at least with small blocks. They weren't shy about putting the steel crank in the 2-bolt car motors though.
In the smog years I have seen nothing but 2-bolts in the cars.
Out of the dozen or so trucks I have owned where I tore the engine apart for one reason or another I would say 75% were 4-bolts.
With big blocks it is more random. The same car model and block casting number could get either.
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69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been
https://67-72chevytrucks.com/vboard/...d.php?t=484426
69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc
68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E