250 Six to 327 Flywheel question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DangerDan · 03-21-2016, 03:14 PM

1971 C10 Stepside
Keeping the three speed (Column Shift) had a 250 Six, installing a 327 also going to 20 Inch wheels keeping the 12 bolt Posi.
Question should I go to the 12 inch clutch?
Question (2) will the same flywheel work?

Thank You in Advance.

1970 charlie · 03-21-2016, 04:01 PM

I did it years ago, every thing interchanged my was a 250 to a 283 the fly wheel bolt circle are the same and are all internal balance.

Mike C · 03-21-2016, 08:54 PM

It is probably not drilled for the 12" clutch though. And the 10.5" should be more than enough.

03-21-2016, 03:14 PM	#1
DangerDan Registered User Join Date: Aug 2015 Location: Fort Wayne, IN Posts: 39	250 Six to 327 Flywheel question 1971 C10 Stepside Keeping the three speed (Column Shift) had a 250 Six, installing a 327 also going to 20 Inch wheels keeping the 12 bolt Posi. Question should I go to the 12 inch clutch? Question (2) will the same flywheel work? Thank You in Advance.

03-21-2016, 04:01 PM	#2
1970 charlie Registered User Join Date: Oct 2015 Location: grand valley pa Posts: 52	Re: 250 Six to 327 Flywheel question I did it years ago, every thing interchanged my was a 250 to a 283 the fly wheel bolt circle are the same and are all internal balance.

03-21-2016, 08:54 PM	#3
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,714	Re: 250 Six to 327 Flywheel question It is probably not drilled for the 12" clutch though. And the 10.5" should be more than enough. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax



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