Short tail BOP Turbo 400s What did they come in?

Hi guys
Which cars did the SHORT Tail BOP turbo 400*******s come out in, Im trying to track one down here in Australia.
Thanks
Pete

 

as far as i know..all th400's had the same tailshaft length

 

look in a mid to late 60s impala, or an a body car

 

I pulled a short tail shaft 400 out of a '74/'75 Monte Carlo with a 454......I imagine a Gran Prix or BB Olds Cutlass from the same year might be your best bet...

 

I believe that the 400 short tails were introduced in the late '60s in the intermediate sized BB powered GM cars. The oldest short tail that I've pulled out personally was from a '70 Grand Prix with a 400. As you likely know, they come in Chevy and BOP bellhousing bolt patterns.

Jan

 

what did the "long" tailshaft ones come in?

 

guys, he said BOP not chevy!
anyway, i've got one out of a 76 seville (400 short shaft)
i'd look in a firebird or lemans (F or A body)
i don't know what the crossover to "OZ" would be but you get the idea...

 

HJ, HX, HZ , holdens ? there's an old turbo 400 out of a HJ premier Holden here under the bench with a cracked case around the bellhousing from an accident.
I am sure the extension housing on it is very short. If that is what you mean by shot tail BOP !
Geoff aka whodaky

 

The longer shaft TH 400 was actually a TH 375, same basic thing with fewer clutches etc..lighter duty. Found in lots of station wagons.

 

huh...some days, it's good to be the oddball muscle car guy.

o.b.k.b- from my travels, I have only ever located Short tail turbo 400's in big block, or "badged" cars- (cutlass 442, Buick G.S.,poncho G.T.O. blah blah blah.)- the shorter shaft was in there because it was a "built" transmission. -every b.o.p. brand x knucklhead is gonna tell you thier th-400 is better because it has more clutches.guess what?
they almost all had 6 in a pack. (short tails, that is.)

but yeah. to directly answer your question, strt looking under 64-72 cars... they're under ALOT of ponchos and olds. (they used to eat th350's for lunch.)
it's a shame you're not closer. I have something like 8 of them. stupid water.

 

I believe that the '64 Wildcat's had a short tailshaft. I pulled one out of a convertible a few years ago and I can take a look in my garage when I get home if you need. It's not a switch-pitch though. It's a TH400 but this one was only made for a short time. (no pun intened)

steve

oh, it was bolted to a 364 if that matters any.

 

Then you don't know. By the way there are actually three different length TH400 tailshafts. 4" 9" and 13"

I believe a lot of B-body cars had the medium ones.

C tailshaft 28 3/8 24 5/16 26 15/16 4 ¼ 20 D tailshaft 33 27/32 24 5/16 27 15/16 4 ¼ 20 13" tailshaft 37 7/8 24 5/16 27 21/32 1 ¾ 20

 

That would be called a ST400 if it is the Nailhead bolt pattern and no switch pitch. The switch pitch is a SP400. The Nailhead ones use a short tailshaft but it is different than the regular TH400 and uses a different yoke. It's easy enough to just replace the tailshaft on that******* with the standard short one so you can run a regular yoke if you don't have the ST400 or SP400 one.

As for the 364, that******* never came with that motor, the '64 Buicks should be 401 or 425. Someone must have put that 364 in there.

 

Thanks guys great info, and yes the tryanny of distance is a PITA.

Sorry about my lack of knowledge but does a swtch pitch******* have two stall speeds and is one available as a short tail BOP*******?

 

IF you have a long tailshaft 400 ... the shaft and tailhousing off a short 400 will interchange. Even from a non BOP pattern donor.

Checker cabs have the 400 Turbo in them ( some of them ) ... the one in my 32 came from a Checker Cab ... and it was a short one. I had my transmission guy make it into a long one and installed the switch pitch internals. That gives you a high/low stall speed at the flick of a switch. A different converter is also required.

Back when I built my 32 ( in the 70's ) ... there were lots of dead Buicks in the junk yard. Not so many any more ...

 

you shoud be able to find one in a 67-68 Buick...

http://buickperformance.com/SPTrans.htm

 

Correct! It's a '61 engine with a '64 trans.

 

wow, it's amazing the "facts" I've learned in this thread!

the easiest to find/cheapest (around here) short tail BOP 400s I've found are in late 70s caddys.....

 

Spoke with a guy in Sydney and it looks like he might have one out a 77-78 Caddy. If thats the case and he doesnt try and***** me with the cost I'll have one very shortly. Stoked if it comes off! Really appreciate the help and input guys. I , too have learnt a lot. Now to pull the 500 out of the Eldo and jam it in the coupe 12s here I come.

 

if all else fails...aren't there a couple of Aussies (or kiwis...or J.a.f.a's) that make it to the round up every year?

Hell, I would give you one of mine if it would make it any easier! you figure out how to mail/drag/float/shoot/fly it to you and it's yours!

 

Wow Lux, thanks for the fantastic offer, really appreciate it. If all else fails I'll be in touch. Getting it from Long Beach Cali to here would be pretty simple.

This is what its going in, with a 500 Caddy in front of it. looking to run mid 12s.

 

I know he said BOP but I took one out of a 68 small block Impala.I,m pretty sure the car was all original.

 

Chevy short th400s are quite common, but BOPS are not so common, many of the big BOP boats that used the TH400 in the late 60s-mid 70s had the longer trans.

 

might be rare but they ain't worth much evidently.
i've got one sitting here that i've tried to sell forever....cheap, too!