I,m hoping to find a trans cross member with the two notches in it for duel exhaust. If any body knows of one please let me know. I don't know what years interchange but my Starefire had one and my Jetstar-1 had that type.

 

I have a large collection of crossmembers; a few big car ones. Do you have any dimensions or a pic that you could provide? All early pieces should have two "humps". Thanks, Bob.

 

Back in those years all of them should have had it and I believe Buick and Pontiac used the same as Olds, since they had the same transmission options. The single hump crossmember started in 1975 with the advent of cataytic converters.

Hey, having only one hump would discourage installing dual exhaust on a smogged car and as we all know, performance was a 1970s four-letter word.

 

1965-1970 full size (B-body and C-body) interchange, but be aware that crossmembers from convertibles with boxed frames will be narrower than those from cars with open channel frames.

 

Thanks, the cross member is for a conv. the jetstar 88 has only one hump since it was a single exhaust car, I will get the length and post. Great info!!!

 

THe tranny cross member is 54 3/4 in. in length, and I also found the r/s exhaust manifold cracked so I,m shopping for one of those #381921 for my 330 single exhaust car. Bob if you happen to have one please let me know. If you still want a photo I will work on that. Thank you, Vernell.

 

I'd like to see a photo of your single hump crossmember. I've never seen a pre-catalyst car that didn't have a dual hump crossmember, since dual exhaust was always a factory option on these cars.

 

I'm parting out a 65 Starfire, it has the notches for dual exhaust. PM me if your interested and the other guys can't help you out. The parts is located in Southeastern, Indiana

 

Pictures of single hump trans xmember

 

Well, ain't that something
I have never seen such a thing!

 

x2,3 4 and 5 if factory in 65

 

Thanks for the photos. I am at a complete loss for words.

 

Yes the 65 Jetstar is a original car, paint, engine, trans,interior, just a few misc parts replaced for maint.

 

I'm dumbfounded as well. And I'm the one always telling everyone else "never say never" on GM and Oldsmobile.

 

That's a #3 xst manifold.
You can use a far more common #4 unit also. Same features.
I surely have a #4 and probably have a #3 somewhere. In the stack of manifolds.

 

REDJET, I will check on both pieces and let you know. Somehow I thought that you had it covered . Thanks, Bob.

 

I have one "squashed tube" crossmember that measures ~54 3/4" end to end, here at the shop. I know that I have a couple of stamped steel ones; I have more in a trailer at home. I can check this evening. I have (2) L. side exhaust manifolds "A" # 384785 (425) in really nice condition; but I didn't see any R. side. I know that I used some on a 350 Olds that I put into a Jaguar for a customer years ago. I may have used two R. side for that. I'll update tomorrow. Thanks, Bob.

 

I just pulled a cross member out of a 65 Starfire today and it measures 60.5 inches. I'll post pictures soon.

 

Pictures

 

I guess since your car is a convertible with the boxed frame is why yours is narrower.

 

From Post #5:

 

Thanks guys,I had to make a emergency trip to Mn. I am back and still in need of a few parts.

 

Please e-mail me direct regarding the crossmember: drolds1@bellsouth.net. I can then send pics. Thanks, Bob.

 

Morning Vernell, I have a pretty nice #381921 $30 plus shipping?
Brett

PS I also have the crossover pipe available. Anything else needed?

 

Vernell here are some clearer pic's for you. Cheers

Brett

 

Thanks to all of you that helped me. I have found a manifold but I,m still in search for a 1965 to 1970 transmission cross member for a convertible. Thanks to Joe for that piece of info! looking for a 54 3/4 in. double humped, for dual exhaust. Thanks again Vernell

 

I can check, I parted a 66 Delta conv...

 

Pics sent.

 

I did find the one out of the 66 vert and it measures just a hair short of 54 3/4. PM me if interested, Shipping will be kinda high to go across country...

 

A few picts, I took a grinder to the rusty ends to be sure they were solid. One end needed a little rot repair just to be sure...