bellhousing question

**Tommy** · #1 10-02-2009, 10:53 PM

I have a 421 bellhousing and cant remember if I can use the big flywheel and 11 inch clutch with it . Will it work or will I have to use my blowproof lakewood or a 621 ?

Tommy

**kwhizz** · #2 10-02-2009, 11:06 PM

#421= 11" clutch

Ken

**Tommy** · #3 10-02-2009, 11:10 PM

Oh, good ! Thanks Ken. I was thinking I could only use the 10.5 with that one.

Tommy

**kwhizz** · #4 10-03-2009, 02:24 AM

Tommy................Just found out that I gave you "Bum" info.

......#421 is for 10 1/2" Flywheel...Just when I thought I had this #'s stuff figured out....

Sorry

Ken

**RPOL88** · #5 10-03-2009, 04:23 AM

Pretty sure that the 421 housing is 1963 and the hole is a smaller diameter for the front retainer. Tom.

**Tommy** · #6 10-03-2009, 05:13 PM

That's alright Ken, I made a mistake too. my bellhousing is a "403".... I dcn't know why I had 421 in my head. I am pretty sure the 403 is also for a 10.5 clutch too though....

Tommy

**Jonesy** · #7 10-03-2009, 05:47 PM

403 is a 10.5 clutch housing

621 is an 11 inch housing.

**kwhizz** · #8 10-04-2009, 10:14 PM

[ QUOTE ]
403 is a 10.5 clutch housing

621 is an 11 inch housing.

[/ QUOTE ]

#621 is what I was thinking of .......This Numbers stuff is Hard......

**Tommy** · #9 10-05-2009, 12:29 AM

I agree ken... I am getting everything ready so when I start the swap I can get it done quickly and keep driving... I just need a couple more things and a couple days off work....

Tommy

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