What size head bolts
#1
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Car: 88 IROC-Z28
Engine: 5.7 L TPI
Transmission: TH700-R4
What size head bolts
I have a stock 88 IROC with a 5.7 where can i look to find out if it the head bolt size and whether or not its a 2 or 4 bolt main.
#2
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
SBCs all use the same size head bolts. The threads are something like 3/8-16 IIRC, and there are 3 different lengths used. To tell if it's 2 or 4 bolt main, pull the oil pan off and look. If it's stock, chances are that it's 2 bolt, not that it matters.
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
I think the head bolts are 7/16"-14 actually.
you definately don't want to pick up bolts from the hardware store, if that's what you're thinking. You need like the grade L9 or better. I think a head bolt kit from mrgasket, or better yet, ARP, would be best.
I wouldn't lose sleep over the 2/4 bolt, that's an old hot rodders fantasy tale.
you definately don't want to pick up bolts from the hardware store, if that's what you're thinking. You need like the grade L9 or better. I think a head bolt kit from mrgasket, or better yet, ARP, would be best.
I wouldn't lose sleep over the 2/4 bolt, that's an old hot rodders fantasy tale.
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