56 gmc hydramatic v8 (pontiac) swaps - The 1947 - Present Chevrolet & GMC Truck Message Board Network

64swb · 11-07-2007, 11:04 PM

hey guys, im looking at 2 trucks as a package deal one is a v8 hydramatic truck and has the 316 pontiac motor in it. im wondering if anyone knows if a later ('58 up) ponitac motor will bolt in place of the stock motor? i know where there i can get a hold of a 455 out of a station wagon for hauling it off so i'd like to know if it would fit without too many mods because i don't want to really tear the truck up or do anything that can't be easily reversed.
thanks,
chris

1-ton of fun · 11-08-2007, 10:25 AM

shouldn't be too hard, you just need to fab/buy motor mounts and a tranny mount. there is plenty of room under the hood.

55dude · 11-09-2007, 01:09 PM

if it's not a museum piece go for it. knew a guy that had a nice 400 ram air motor in a 57 gmc and used to really surprise lots of people. the coolest thing was the 400 turbo was shifted by the stock hydromatic shifter on the column.

11-07-2007, 11:04 PM	#1
64swb Registered User Join Date: Mar 2007 Location: Camino, CA Posts: 182	56 gmc hydramatic v8 (pontiac) swaps hey guys, im looking at 2 trucks as a package deal one is a v8 hydramatic truck and has the 316 pontiac motor in it. im wondering if anyone knows if a later ('58 up) ponitac motor will bolt in place of the stock motor? i know where there i can get a hold of a 455 out of a station wagon for hauling it off so i'd like to know if it would fit without too many mods because i don't want to really tear the truck up or do anything that can't be easily reversed. thanks, chris __________________ 1978 Chevy C10, 1986 Chevy K20 'Burb, 1970 Chevelle, 1996 K2500 'Burb, 1977 Chevy K10, 1970 Ford F-250, 72 Ford F100 4x4, 1979 Chevy C30, 1982 Chevy C30, 1996 Chevy Dually 4x4 SAS, 1997 Chevy Tahoe, 1991 Ford F-350 cclb dually 4x4

11-08-2007, 10:25 AM	#2
1-ton of fun polishing a turd Join Date: Dec 2004 Location: houston, tx Posts: 674	Re: 56 gmc hydramatic v8 (pontiac) swaps shouldn't be too hard, you just need to fab/buy motor mounts and a tranny mount. there is plenty of room under the hood. __________________ 59 chevy apache 31 4x4 - my project: http://67-72chevytrucks.com/vboard/s....php?p=8668512 53 buick special - straight 8 sled - blow through turbo 47 gmc - flatbed hot rod build 99 ford econoline e350 - 4x4 converted family roadtrip/overlanding rig AKA 'Monstervan' AKA 'Daddy-Van'

11-09-2007, 01:09 PM	#3
55dude Registered User Join Date: Jan 2007 Location: tacoma wa. Posts: 1,037	Re: 56 gmc hydramatic v8 (pontiac) swaps if it's not a museum piece go for it. knew a guy that had a nice 400 ram air motor in a 57 gmc and used to really surprise lots of people. the coolest thing was the 400 turbo was shifted by the stock hydromatic shifter on the column.



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