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Old 01-18-2015, 07:23 PM   #1
ratrodsrule1
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Flwheel

I am swapping from a 250 six cylinder that has a three speed manual transmission to a 350. Will my existing flywheel work on the 350? If not what flywheel should I search for ?
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Old 01-19-2015, 08:13 AM   #2
bns454
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Re: Flwheel

i did this on a 78 c20 i had to alter the size of the crankshaft mounting bolt holes but it works well
(i cut some steel tube inserts to step the 6 cylinder 9/16 holes down to the 1/2in small block holes and used arp bolts)
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Old 01-19-2015, 08:51 AM   #3
73kay
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Re: Flwheel

I did the same swap and everything bolted right up.
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Old 01-19-2015, 11:33 AM   #4
Bigstevex4
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Re: Flwheel

I swaped a 250 six in a 65 panel the 396 was lunched fly wheel off the big block bolted right up. Thats one things that make chevy great.
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Old 01-19-2015, 02:57 PM   #5
Oregoon
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Re: Flwheel

Here's a handy reference: http://www.hemmings.com/hmn/stories/...feature29.html
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Old 01-19-2015, 04:32 PM   #6
ChevDog1
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Re: Flwheel

I have a 454 flexplate on my 250 six (with the balance weight removed, of course...).
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Old 01-20-2015, 09:43 AM   #7
jetmech85
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Re: Flwheel

'86 and newer one peice rear seal engines changed bolt circle diameter.
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