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- - 4l80e converter bolt up (https://67-72chevytrucks.com/vboard/showthread.php?t=755333)

chris mc bride

01-21-2018 07:31 PM

4l80e converter bolt up

Just got 4l80e out of donor truck. Good news its re-manufactured(GM),guess good. I knew converter pattern was 6 bolt where as 454 In Panel is three bolt. Question any reason that bolting to just the three will not work just fine? Same pattern for 3 as 454 flywheel and heck thousands out there with 3 bolts. Heck my FED with 1500 hp is bolted to flywheel with 3 7/16 bolts as is most drag cars.

Bigdav160

01-21-2018 09:56 PM

Re: 4l80e converter bolt up

I don't see any problem.

A lot of truck TH400's had 6 bolts while cars had 3

kwmech

01-22-2018 01:49 AM

Re: 4l80e converter bolt up

The pattern is already on the flexplate, you can use 3 or 6

chris mc bride

01-22-2018 07:10 PM

Re: 4l80e converter bolt up

My flex plates have two patterns one wider than other.Wider works for 3.Cool I did not see reason,but extra input rarely hurts.

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