4 speed conversion...do I really need a 621 bellhousing?

12703 Views 14 Replies 10 Participants Last post by okeesignguy, Sep 28, 2012

okeesignguy

Discussion Starter · Aug 26, 2012 (Edited)

Or are there others that will work as good...?
72 Nova...350 Gen 1 block....Muncie M-20 trany....

Save

1 - 15 of 15 Posts

the FLYER

· #2 · Aug 26, 2012

there are smaller diameter units that can be used... but if a 168 tooth flywheel is desired then the '621 (or scattershield) would be what you want...

Save

Professor Fate

· #3 · Aug 26, 2012

Chevrolet has repopped the 621 bellhousing and is available from any GM Performance dealers.

Save

1969NovaSS

· #4 · Aug 26, 2012

This bell housing will work as well.

http://www.ebay.com/itm/Chevy-GMC-4...ies&hash=item3cca1cb2c7&vxp=mtr#ht_500wt_1413

Save

the FLYER

· #5 · Aug 26, 2012

1969NovaSS said:
This bell housing will work as well.

http://www.ebay.com/itm/Chevy-GMC-4...ies&hash=item3cca1cb2c7&vxp=mtr#ht_500wt_1413

not really... it has the large bearing retainer opening... no, that's the incorrect bell housing...

Save

bracketchev1221

· #6 · Aug 27, 2012

I like the Lakewood 77-150 bellhousing. It's in my car.

Save

The "621", non Gbody "697" and "444" are all 168 tooth flywheel bellhousings. The "621" would be "factory correct" for your car with a 168 tooth. A casting # 3840383 or # 3858403 can be used with a 153 tooth flywheel.
Russ

Save

WildBillyT

· #8 · Aug 28, 2012

4-speed said:
The "621", non Gbody "697" and "444" are all 168 tooth flywheel bellhousings. The "621" would be "factory correct" for your car with a 168 tooth. A casting # 3840383 or # 3858403 can be used with a 153 tooth flywheel.
Russ

Given Russ' username and sig this is kind of unnecessary but what he said is true. There are other 168t bellhousings out there, but the 621 would be correct.

Save

okeesignguy

Discussion Starter · #9 · Aug 28, 2012

WildBillyT said:
Given Russ' username and sig this is kind of unnecessary but what he said is true. There are other 168t bellhousings out there, but the 621 would be correct.

I don't give a flip about being correct on this one

However I DO want a trouble free install and result.....
Some of these have the larger hole in the back...(larger than 4-7/8") and I have read here that that makes a difference....
The darn 621's are just too expensive....

Save

sevenzeronova

· #10 · Aug 28, 2012 (Edited)

Try here for a 621 repop housing

thepartsplaceinc

http://www.thepartsplaceinc.com/pop-up/popup.asp?id=MT4004C.jpg

Save

taz3

· #11 · Aug 28, 2012

okeesignguy said:
I don't give a flip about being correct on this one
However I DO want a trouble free install and result.....
Some of these have the larger hole in the back...(larger than 4-7/8") and I have read here that that makes a difference....
The darn 621's are just too expensive....

For the money you'll spend on 621, buy a used scatter shield and be done for good!:yes:

Save

okeesignguy

Discussion Starter · #12 · Aug 29, 2012

4-speed said:
The "621", non Gbody "697" and "444" are all 168 tooth flywheel bellhousings.

Will all 3 of these be a direct bolt on with my 72...?
What are the differences in these...?

Save

okeesignguy

Discussion Starter · #13 · Aug 29, 2012

http://www.ebay.com/itm/Corvette-Ch...ts=Make:Chevrolet&hash=item2c67c716f9&vxp=mtr

This guy claims that the 697 is the same too...
Is he correct...?

Save

gg63

· #14 · Aug 30, 2012

There are several you could use that are essentially the same. And they can be had far cheaper than the 621. See below link. Great information. You can buy from them or look for a deal on ebay.

http://www.4speedconversions.com/chevy-bellhousings.html

Save

okeesignguy

Discussion Starter · #15 · Sep 28, 2012

I have decided to go with a 486 truck bellhousing with a Novak adapter ring...
Way less $ than a 621....

Save

1 - 15 of 15 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month