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th400 torque converter to flexplate bolts

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Old 02-08-2009, 10:45 AM   #1
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Default th400 torque converter to flexplate bolts

hey guys, i'm mating a th400 and sbc converter to a 98 LS1 flexplate. At the parts store they have a bolt set for a TH350. the specs are 0.375" x 5/8". but their website (oreillys) says there is another bolt set for a TH400 where the bolts are 0.375" x 1/2".

Is it ok to use the 5/8" TH350 set? My LS1 engine should make 400 horsepower give or take a few hp.

I wanted to check with you guys before getting them. Don't want to shear off bolts or have something else weird happen.

Thanks again for any help/advice
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Old 02-08-2009, 11:08 AM   #2
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I am running ARP's in mine, you need to make sure of how thick the flange is on the converter where the bolts go through I had to have longer ones for my setup.
http://store.summitracing.com/partde...5&autoview=sku
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Old 02-08-2009, 12:08 PM   #3
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NICE - will be upgrading to those then. how tight do you torque them?
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Old 02-08-2009, 07:38 PM   #4
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I don't remember them having a specific torque spec, but I just tightened them up with a pair of wrenches like I always do. No problems still tight as hell when my setup came back out.
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400, bolt, bolts, camaro, converter, flexplate, ls1, sbc, spec, specs, th400, torque, torques, tourque, turbo

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