Does anyone happen to have a bellhousing for an 11" clutch? I am thinking eventually I will want to change over to an 11".
The original one for my car would be a 3899621 casting number.
65 SD L79 said
Feb 17, 2019
the repops don't look original at all
4SPEED427 said
Feb 17, 2019
I am hoping for an original just because, and also I read on one forum that the buyer had trouble with his not being "true" which cause issues. I am told it needs to be extremely tight as to tolerances.
seventy2plus2 said
Feb 17, 2019
Finding a good 621 bellhousing is a challenge.
When gathering parts for my 4 speed swap, I bought one on ebay from somewhere in Canada and it was cracked and had some chips out of the block mating surface. When I queried the seller, he said "well I held it up and banged it, and it rang like a bell so I thought it was ok". I ended up returning it.
The second one I bought has some hairline cracks, it looks like where the molten aluminum flowed into the mold. When I queried that vendor, I got no reply. That's the one I used. On the plus side, it included the bolts for tranny mounting.
The inspection cover is readily available.
DonSSDD said
Feb 17, 2019
Carl, a pre 63 cast iron will work fine while you are looking for the correct one, all were for the 168 tooth flywheels. Search for the closed bottom aluminum for the corvette BBs for 65 on. There are later closed bottom aluminum bhs from trucks that will work as well.
Bill shuba said
Feb 17, 2019
Carl was searching 69 impalla parts on ebay there were 621.s there not repops ..cheap also hope you can find one !! go too 69 impala parts ebay then "go to see all results on bottom of page : click on #3 Yenko 11 inch 621 169.00 theres also others
-- Edited by Bill shuba on Sunday 17th of February 2019 09:26:43 PM
-- Edited by Bill shuba on Sunday 17th of February 2019 09:27:48 PM
4SPEED427 said
Feb 17, 2019
DonSSDD wrote:
Carl, a pre 63 cast iron will work fine while you are looking for the correct one, all were for the 168 tooth flywheels. Search for the closed bottom aluminum for the corvette BBs for 65 on. There are later closed bottom aluminum bhs from trucks that will work as well.
Does the truck housing have the threaded boss in the side for the Z bar pivot ball for B bodies?
I'm hoping to find one closer to home, and preferably from a site member or someone I know. I see them on ebay and Craigslist though, yes.
DonSSDD said
Feb 18, 2019
Carl Stevenson wrote:
DonSSDD wrote:
Carl, a pre 63 cast iron will work fine while you are looking for the correct one, all were for the 168 tooth flywheels. Search for the closed bottom aluminum for the corvette BBs for 65 on. There are later closed bottom aluminum bhs from trucks that will work as well.
Does the truck housing have the threaded boss in the side for the Z bar pivot ball for B bodies?
Im not familiar with these new cars Carl, newer than 64 that is. As a guess, Id say the newer truck bh would have this as why would gm make a different one for the truck? The geometry would be the same for a bb car and truck in later years?
Yams said
Feb 18, 2019
Truck one will work. Go to your local pick-a-part and grab one. I spied a couple here in NS at a junkyard that I'm going to grab when it dries up here. Can't get at them right now, they're frozen in the ground and when it warms up it's a mud pit.
We just installed one on my brothers Nova and it's perfect. Has the screw in ball for z bar. Pulled it off a '79 3/4 ton 2 wheel drive truck in the summer. Polished it and looks great!
-- Edited by Yams on Monday 18th of February 2019 07:47:10 AM
Yams said
Feb 18, 2019
Just remembered a site that you can look at. 4speedconversions.com They give all the information needed for you in regards to what fits what, and what bellhousing came from what type of vehicle. It's pretty good.
Just remembered a site that you can look at. 4speedconversions.com They give all the information needed for you in regards to what fits what, and what bellhousing came from what type of vehicle. It's pretty good.
That's where I stole the picture of the bellhousing!
canam said
Feb 18, 2019
Hi Carl,I have a truck bell housing with the threaded boss for z bar pivot
Cast # is 6263756.Nice and clean in appearance with no cracks $40.00 plus shipping .Only Problem I'm in southern On.
Bill
4SPEED427 said
Feb 18, 2019
Does that have the 4.68" hole for the transmission input housing? I thought the trucks had a bigger opening in them. I think the trucks were about 5" maybe?
timbuk said
Feb 18, 2019
i used the truck bellhousing in my 65 invader i bought a ring that fit into the trans opening to adapt to the smaller size,if you can find a truck bell from 67 to 72 that took a 3 sp it will have the right size hole the ring was around 40 bucks
Beaumont4008 said
Feb 18, 2019
Carl Stevenson wrote:
Does that have the 4.68" hole for the transmission input housing? I thought the trucks had a bigger opening in them. I think the trucks were about 5" maybe?
Yes they do I think it's 5-1/8 like Timbuk said you need an adapter for that truck bell housing To work correctly .
Carl I am using the truck bellhousing (bought for $25) in my '66 Acadian SD,11" CentreForce Dual Friction, 168 flywheel, coupled to a Borg Warner Super T10. Plus 25,000 of trouble free miles!
I checked with the seller. The 11" car bellhousing isn't a 621.
4SPEED427 said
Feb 19, 2019
Thanks for doing that Clint. Did he say what the casting number is?
seventy2plus2 said
Feb 20, 2019
Carl Stevenson wrote:
Thanks for doing that Clint. Did he say what the casting number is?
casting # 464697, he says it's the same as 3899621. I just looked at a few on ebay, they look the same as 3899621 to me.
Beaumont4008 said
Feb 20, 2019
From what I read about this 697 bell housing there are two types and it depends were the clutch fork pivot ball is located. If it's mounted in the top position of the mounting boss your good to go and if mounted in the lower position in the boss it puts the clutch fork in the wrong position . This according to the four speed convention site.
The original one for my car would be a 3899621 casting number.
the repops don't look original at all
When gathering parts for my 4 speed swap, I bought one on ebay from somewhere in Canada and it was cracked and had some chips out of the block mating surface. When I queried the seller, he said "well I held it up and banged it, and it rang like a bell so I thought it was ok". I ended up returning it.
The second one I bought has some hairline cracks, it looks like where the molten aluminum flowed into the mold. When I queried that vendor, I got no reply. That's the one I used. On the plus side, it included the bolts for tranny mounting.
The inspection cover is readily available.
Carl was searching 69 impalla parts on ebay there were 621.s there not repops ..cheap also hope you can find one !! go too 69 impala parts ebay then "go to see all results on bottom of page : click on #3 Yenko 11 inch 621 169.00 theres also others
-- Edited by Bill shuba on Sunday 17th of February 2019 09:26:43 PM
-- Edited by Bill shuba on Sunday 17th of February 2019 09:27:48 PM
Does the truck housing have the threaded boss in the side for the Z bar pivot ball for B bodies?
www.ebay.com/itm/Chevelle-Corvette-Nova-Camaro-Bell-Housing-4-Speed-3899621/253505228041
Im not familiar with these new cars Carl, newer than 64 that is. As a guess, Id say the newer truck bh would have this as why would gm make a different one for the truck? The geometry would be the same for a bb car and truck in later years?
Truck one will work. Go to your local pick-a-part and grab one. I spied a couple here in NS at a junkyard that I'm going to grab when it dries up here. Can't get at them right now, they're frozen in the ground and when it warms up it's a mud pit.
We just installed one on my brothers Nova and it's perfect. Has the screw in ball for z bar. Pulled it off a '79 3/4 ton 2 wheel drive truck in the summer. Polished it and looks great!
-- Edited by Yams on Monday 18th of February 2019 07:47:10 AM
www.4speedconversions.com/chevy-bellhousings.html
That's where I stole the picture of the bellhousing!
Hi Carl,I have a truck bell housing with the threaded boss for z bar pivot
Cast # is 6263756.Nice and clean in appearance with no cracks $40.00 plus shipping .Only Problem I'm in southern On.
Bill
Yes they do I think it's 5-1/8 like Timbuk said you need an adapter for that truck bell housing To work correctly .
Sending you a PM Carl.
www.kijiji.ca/v-transmission-drive-train/edmonton/chev-bellhousings/1416316012
I checked with the seller. The 11" car bellhousing isn't a 621.
casting # 464697, he says it's the same as 3899621. I just looked at a few on ebay, they look the same as 3899621 to me.
From what I read about this 697 bell housing there are two types and it depends were the clutch fork pivot ball is located. If it's mounted in the top position of the mounting boss your good to go and if mounted in the lower position in the boss it puts the clutch fork in the wrong position . This according to the four speed convention site.