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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


How many A bodies got a turbo 400?

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G3GM :: G3 Tech :: Engine & Driveline

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How many A bodies got a turbo 400? Empty How many A bodies got a turbo 400?

Post by Sinister Sun Apr 08, 2018 7:29 pm

I know most A bodies got a turbo 350.
Big blocks obviously got turbo 400's.
How about the more obscure choices.
Grand Prix.
Grand Am
400 engines get a turbo 350 or 400?
Thanks.
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Post by Joe73 Sun Apr 08, 2018 9:17 pm

My buddies original 74 GMC sprint has a 400 with turbo 400. Verified by engine block code.
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Post by pila Sun Apr 08, 2018 9:44 pm

The TH400 would be a good choice for a 400 engine, specially if it's been massaged a bit. The 400 I put in my Elco years ago, ate 3 of the TH350s that were locally rebuilt, before I built my own transmission. A TH400 would likely have precluded all that fooling around with the 350, at that time..

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Post by Limey SE Sun Apr 08, 2018 10:18 pm

Can Am's with the 6.6L designation on Scoop got the 400th trans also the 6.6 < no L in decal got the 350th Just recently discovered this for the ones that got the 6.6L also had Posi with 3.08 gears something to do with the California Built cars VS the others for Emissions

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1977 Chevelle SE x2
One Mild original
one Wild NON original
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Post by Sinister Mon Apr 09, 2018 9:59 am

A few articles I read stated most all Pontiac A bodies, even the 301 got turbo 400's. Rolling Eyes Rolling Eyes Rolling Eyes Rolling Eyes
I guess the higher original price for
Pontiacs or Buicks got you a 400?
Interesting.
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Post by pila Tue Apr 10, 2018 1:12 am

Interesting.......the TH400 trans in my Elco, behind the Caddy engine, is from a '74 Pontiac !

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Post by Sinister Tue Apr 10, 2018 1:46 am

I've got a garage full of turbo 400's.
Chevy,and bop.
When I worked as a mechanic years ago...rolls Royce rolled in for an oil change...Had a hydromatic by Gm...stamped right on the pan.
My question pertains to acquiring stock vehicles with turbo 400's to add to my collection.
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