Big Block 4spd trans crossmember [Archive] - Team Camaro Tech

: Big Block 4spd trans crossmember


Mr. C
Oct 6th, 01, 05:57 PM
Does anyone reproduce this crossmember,if not what is reasonable price to pay for a used one

joeray
Oct 7th, 01, 02:33 AM
Rick's has it in there catalog, but says "call" for price. Have you tried GM, I know they still sell the crossmember for TH4000, maybe 4speed also?

big gear head
Oct 7th, 01, 06:33 AM
I've had 3 of these. I got one out of a Firebird. They used the same one in the 4 speed cars. I also got one out of a big block 4 speed Nova. You might also check some of the Nova clones. Someone took a torch to the original one in my car. I guess the headers didn't clear.

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'69 RS/SS396 pro street
427/4spd/9"
Byars Performance
High Performance Drive Train Parts And Service
www.lubedealer.com/biggearhead (http://www.lubedealer.com/biggearhead)

William
Oct 7th, 01, 07:51 AM
I have one cluttering up the garage. Yours for $100 + shipping.

cavemate
Oct 7th, 01, 08:38 AM
I put a big block/muncie in my 67. It was a SB PG...used the original crossmember.

Mr. C
Oct 7th, 01, 03:49 PM
Hello Cavemate: did the trans mount lineup with the holes in crossmember or did you have to drill different holes?

cavemate
Oct 7th, 01, 04:02 PM
It has been a while, but no, I don't recall having to drill anyting. In fact I'm nearly positive I didn't redrill. I do think though that the Muncice was a 70 and up fine spline type if that makes any difference I'm not sure.

Gary

clill
Oct 7th, 01, 04:07 PM
William...If he doesn't want it I will take it but that is a cheap price for a real one.

Mr. C
Oct 7th, 01, 04:41 PM
Wlliam I am interested send me an E mail on how to contact you Thanks

joeray
Oct 7th, 01, 05:23 PM
Mr.C & cavemate, usually when the smallblock crossmember will work it is because the engine frame mounts used were also from a smallblock. BB engine frame mounts move the engine about an inch to the passenger side of the car, that is why the BB crossmember is different. All sorts of combinations may work but the General used BB frame mounts with the BB crossmember to avoid all possible conflicts.

Mr. C
Oct 7th, 01, 05:59 PM
I have installed BB frame mounts.

William
Oct 8th, 01, 02:41 PM
Re the $100 BB/4-speed crossmember, my email is glowackk@execpc.com.

It's been blasted & painted.

Mr. C
Oct 8th, 01, 05:46 PM
William Thanks for the help Dave

oger
Oct 9th, 01, 06:01 PM
You can redrill the SB one. Put everything together and move the trans untill the exhaust fits then redrill crossmember

scottcleaver
Oct 10th, 01, 01:51 PM
Could someone tell me the difference in the crossmembers? I understand the difference in the bigblock motor mounts, but I have put a smallblock motor in my bigblock car before and did not notice any differences in anything.

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SCOTT
69 RS-SS 396 4-SPEED

William
Oct 10th, 01, 02:21 PM
Factory frame brackets offset a bb about 1" to the left. This requires a crossmember with the trans mounting holes offset the same amount. The bb manual trans crossmember is almost the same as sb; there are other detail differences but the sb piece can be butched to fit. The T400 crossmember is entirely different and also has the offset mounting holes. I know of two sb/4-speed cars factory-built with a bb crossmember. When replaced with a sb piece, the bracket that mounts the z-bar will be incorrectly located as it was aligned and its holes drilled when the engine/trans were installed in the frame.

Indy 69
Oct 10th, 01, 08:34 PM
Seem to remember the std. crossmember can be adapted by mounting it with the front member holes bolted to the rear frame holes and then drilling new holes for the rear mounting position..think this will work?


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