Which length header bolts?
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Junior Member
Joined: Feb 2005
Posts: 18
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From: New York
Car: Black '89 IROC Convertible
Engine: 305 TPI
Transmission: 700-R4
Which length header bolts?
Ordering Hooker 2055's from Jet-Hot. Want to get Stage 8 locking header bolts. Saw a set on Summit (Stainless Steel) with an underhead length of 1", also with external hex head (set of 12). Will these work for my application? I have a 305 TPI. Or do I need to get the shorter 3/4" inch verson? Also, which head style would anyone suggest? Need to get those babys tight. Thanks in advance!
Joined: Mar 2000
Posts: 43,187
Likes: 46
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The 3/4" will probably work, but I'd go with the 1" if possible.
Only issue I've seen is with my World heads. The 1" punched out the back of one hole allowing a coolant leak. Pretty rare thing, though, and I doubt you'll have a problem with stock heads. I've used 1" on several others and haven't had a problem.
Only issue I've seen is with my World heads. The 1" punched out the back of one hole allowing a coolant leak. Pretty rare thing, though, and I doubt you'll have a problem with stock heads. I've used 1" on several others and haven't had a problem.
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