Does anyone have any casting #'s for C-4 bellhousings? been looking on the net and can't find anything which will tell me how to identify between the c-4 with the 157tooth flexplate and the c-4 with the 164 tooth flex plate... bought a new flexplate and torque converter while I was rebuilding my engine and I found out the hard way that I have the bell housing for the 164 and my flex plate is the 157 and my torque converter is for the 157 with the 10.5 bolt patern.
Some help? Just bought one. Don't have the number with me but I'll get it and post it. Started D2xx, then 9676-AA I believe. Saw two on ebay recently one a 65, it had the same 9676 but different revision, just A I believe, and another with the identical numbers that I bought, advertised as working for Maverick, both looked identical. I think the 9676 is the important part of the number. The junkyard i got it from had the bigger version too, looked the same until you nested them, you could see the size difference. Fit right on my '66 289 with 157 tooth anyway, at least until I actually try and hook the transmission to it(hope I'm kidding). $40
easiest way to tell is by the ribs on the top. if they go all the way they are for the 157. if they only go part way they are for the 164.
after looking at the web site don posted I'm guessing my trany is a Case Fill.... the pan is relitively flat... it's the origenal tranny would that make it a case fill?
If the dipstick tube goes straight down into transmission above the pan it is a case fill. If it wraps around and goes into the side of the pan it is a pan fill. I have only seen case fills original in mavericks.
I believe 9676 designates that it is a bell housing. If it came from a 65 model and is bolted to a 289 it is more than likley a 5 bolt bell housing.
not quite what i got The D2 on the bell housing means its a '72. Bolted to my '66 289, the 65 was on ebay, didn't buy it. But you're right about the 9676, the d2xx number may be more important, although it could be a catch all number too, unless the one for the maverick was specific, which i don't think is the case. The first number that is an x right now would tell a model of car, but that doesn't really mean anything either unless it's a maverick letter, as it would have been used on multiple models. At least I know it's a '72, now thinking the rev letter could be most important. I sure would like this question answered though, I too searched and could not find a definitive answer. And there's obviously a lot of people gettting the wrong one.
here is another dumb question... maybe it will be answered on one of the above sites but where is the casting number on a bell?
ok found a answer to my last question... the second "xx" I think designate weather it's for a pan or case fill and if it's for either a 157 or 164 tooth flexplate.
The ribs are easiest to tell the differance as Don said, you can also measure from the dowel hole to the outside of the starter opening. Small bell is 17 13/16th's across, the large bell is 18 5/16th's,
Some numbers. Numbers are stamped on the back(outside) right around the ring. Top, I think. RF-D2OP 7976-AA Lester 2. A 72(D2) bell housing, measured 18 3/8 outside edge to outside edge across the dowel hole to starter hump. Top ribs go all the way. Inside edge of dowel hole to outside edge of starter hump= 17 3/4 O(ohh) is fairlane on earlier years, not positive if it still is here. P is engineering group this part is assigned to, E=engine, P=powertrain? 7976= bell housing, AA is the revision of this part, don't know what the def. is. Lester 2- quessing OEM internal designation, or Lester the Chevy molester. RF-D9AP 7976-AA Lester 3. A 79 bell housing, measured 18 7/8 outside edge to outside edge across the dowel hole to starter hump. Top ribs only go about 3 inches from outside edge. Inside edge of dowel hole to outside edge of starter hump = 18 1/4 Only difference is model letter and Lester 2 or 3. Nested, the size difference is more noticeable top to bottom than side to side. But I didn't think to measure that way. As far as I can tell right now the top one is correct, for different years, just the year designation should change, but if that is all that changes, I think it will be the same casting. Except I just went back and checked Old Guy's measurements and these don't match. So I'm still worried even though the ribs go all the way. Ok, I have to quit confusing myself, my inside edge of dowel hole to outside of starter hump numbers are close enough to Old Guy to be good if that's the way he measured. So maybe there's the answer on casting numbers for Maverick c4 to 302 bell housings. Or....maybe not.
