Bolt Size
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Joined: Apr 2010
Posts: 129
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Car: 74 Nova prostreet 87 Iroc Z28
Engine: 427 671 blower 350 Built
Transmission: 700R4 both
Axle/Gears: Dana 60 an a 323 posi.
Bolt Size
Does anyone know what size an length of bolts do i need to mount trans to motor. 87 z28 iroc 700r4 trans. 350 motor. Thanks.
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Posts: 1,391
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From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Re: Bolt Size
It drives me insane when simple questions like yours people ignore. I tried to google this at one time and didnt find anything on it. The actual size is a 3/8 16 thread 1.5 inches long. You can use grade 5 or grade 8. But Ive seen pics of your car and the bay looks immaculate. So if your **** like me I used stainless steel arp can get them in the pro pack. They come in packs of 5 which sucks because you need 6. Here is the part# I just ordered: http://www.summitracing.com/parts/ARP-623-1500/
They are with the 3/8 head because its tough to get a wrench back there. I know its a few months late but was just browsing over your posts to see if you had any issues. Take care.
They are with the 3/8 head because its tough to get a wrench back there. I know its a few months late but was just browsing over your posts to see if you had any issues. Take care.
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