what's the numbers cast into it ken?

The following information was "borrowed" from carcraft.com. This might help.
Rick
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I recently put a small block 400 with Super T10 transmission in my 1981 El Camino. I used the FW 101, 14", 168 tooth flywheel and a Ram 11" clutch part #88764 from Summit. The Super T10 and Muncie car transmissions have a 4 11/16" (4.68) diameter front bearing retainer, and the 3899 621 aluminum bellhousing is the only one available to cover the larger flywheel and clutch and fit the smaller retainer. The problem is GM only cast about 100,000 of these 621 bellhousings back in the 60's, so they are very rare and expensive today ($300+ on eBAY).



However, GM cast literally millions of the 460 486 bellhousing to cover the larger flywheel and clutch in 1970's light trucks, both 6 and 8 cylinder. The problem is the Muncie SM 465 truck transmissions had a 5 1/8" (5.125) front bearing retainer, so you can't use it with the smaller car transmissions.



Luckily, a 4 11/16" x 5 1/8" bushing is available from Novak part # BR-4 (about $40) at www.novak-adapt.com or 877-602-1500.



I bought one of the adapter rings, and used the truck bellhousing, which cost $25 at my local salvage yard, where they use the truck bellhousings for door stops.



The 486 dust cover is GM part #340 254.

here's what i know...(among other things)

pass. bellhousings
153 tooth/10.5 clutch 4 5/8" opening
cast #s
462606
3858403
3840383
3788421

168 tooth/11" clutch 4 5/8" opening
cast #s
464697
3899621
3872444

truck bellhousings
168 tooth/11 and 12" clutch 5 1/8" opening
cast #s
460486
6263756

chevy II and acadian '62-'67 153 tooth/10.5" clutch
cast #s
3788383 6cyl 4 1/8" opening
3849309 8cyl 4 5/8" opening

the 4 5/8" opening is the standard pass. car trans.(muncie/saginaw)
the chevy II 4 1/8" opening is the 3spd trans.
there are other later casting numbers, these are the earlier numbers.

-- Edited by 69 belair at 19:04, 2009-01-23

69 belair wrote:

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-- Edited by 69 belair at 19:04, 2009-01-23

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        Thanks..   that is nice info to have   you always have the info  thanks...      and yes I am

Stephenzone wrote:

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hey Dave is it hard to convert the b bodies over to standard?

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i'm converting that green '69 impala to 4spd steve.
you need the pedals, linkage and frame bracket plus the obvious drivetrain pieces. '65-'70 linkage is the same, '69-'70 pedals are slightly different. frame bracket can be made and bolted to the frame.

carl2, you got any leftover pieces for him?

69 belair wrote:

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carl2, you got any leftover pieces for him?

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       No (sad face) I dont..  I bought pedals off o-boy the other day.. I ordered a M22 the other day, and am looking for a 11" bell    have a 10.5 to sell, and a new aluminum rad to sell/trade.  top hose fastens on the pass side.. I put the other new rad, I had, in car   I need a shifter now as well..

the number for the bell is in CT U.S.A     buy the time I pay 125.00 plus exchange, plus shipping, plus duty,    I might as well get a new one    thanks so much for the offer

-- Edited by 427carl at 22:37, 2009-01-24                   http://cgi.ebay.com/ebaymotors/65-70-Impala-Caprice-4-Speed-3899621-Bell-Housing-SS_W0QQitemZ360103929701QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item360103929701&_trksid=p4506.c0.m245&_trkparms=72%3A64%7C65%3A12%7C39%3A1%7C240%3A1318                              

-- Edited by 427carl at 22:47, 2009-01-24

427carl wrote:

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69 belair wrote:

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carl2, you got any leftover pieces for him?

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       No (sad face) I dont..  I bought pedals off o-boy the other day.. I ordered a M22 the other day, and am looking for a 11" bell    have a 10.5 to sell, and a new aluminum rad to sell/trade.  top hose fastens on the pass side.. I put the other new rad, I had, in car   I need a shifter now as well..

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M22 ! big dollars ?

thats a good deall  I wont get at the car again until April, so lets wait til you get home.. Carl

-- Edited by 427carl at 12:47, 2009-01-26