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#39400 10/05/2003 2:03 AM | Joined: Oct 2002 Posts: 60 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2002 Posts: 60 | my 1955 GMC 1/2 ton automatic has a 248 motor with a piston blown out the side.
what motors came stock in 55 and will bolt in ?
Is the 248 a good motor to stay with?
thanks for any information
Bill 1951 3/4 ton 5 window pick up
1955 GMC 1/2 ton longbed automatic
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#39401 10/05/2003 4:16 AM | Joined: Dec 2001 Posts: 215 Shop Shark | | Shop Shark Joined: Dec 2001 Posts: 215 | chevys had 265 v8 or 235 six
if you wanted to stay GMC probebly would have to go with poncho engine dont know witch one would be stock
248 is a good engine but if it has a hole in the side of the block from the piston not much you can do expt keep the crank and head and outher spare parts | | |
#39402 10/05/2003 10:52 PM | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | You might look for a GMC 270 or 302. Both will look very similar to your 248 and should bolt up like they were put there by the factory (unless you get a military 302, which does have some differences).
I have a 270 in my 55, which came stock with the 248. Unless I tell someone, they can't tell without checking the casting or serial numbers.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | |
#39403 10/06/2003 1:27 AM | Joined: Oct 2002 Posts: 60 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2002 Posts: 60 | thanks for the information No bad news about 248 will most likley stay with it, 302 or 270 I will check into that some more . Old hydromatic may not want much power thanks Bill
Bill 1951 3/4 ton 5 window pick up
1955 GMC 1/2 ton longbed automatic
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#39404 10/06/2003 1:36 AM | Joined: Apr 2003 Posts: 140 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2003 Posts: 140 | Are we talking second-series 55? If so, they came with small V8s stock. One will bolt in, but you do need to change the bell housing as well as the motor. The hydramatic would take the power if you don't build a hot-rodded V8.
George | | |
#39405 10/06/2003 2:23 AM | Joined: Jul 2000 Posts: 504 Member | | Member Joined: Jul 2000 Posts: 504 | That Hydra-Matic will easily handle the 270 or the 302.. The 248 is a nice motor as well. Keep a Jimmy motor in that Jimmy ...
Bill M
53 GMC Hydra-Matic
Home Page
http://home.comcast.net/~bd97/index.html
When you argue with a fool, two fools are arguing..
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#39406 10/06/2003 6:08 AM | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | The hydromatic was used behind the V-8s used in some pickups and cars. I once owned a '57 Pontiac with a 347 and a Hydromatic. That some combination was used in GMC pickups at the same time.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | |
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