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#57367 03/04/2006 11:09 AM | Joined: Apr 2005 Posts: 926 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 926 | I'm thinking of pulling the fire breathing Pontiac 400 out of my '57 GMC for a smaller(more economical) engine. I just had a good '47 216 given to me-would that be enough motor for this truck? I just plan to use it for hauling trash and running errands,so highway use won't be an issue. I fear the 3.08 gearing will be too high for this engine to carry,but I can change from the tall 16" wheels to 15" wheels and 235/75-15 tires and soften up the overall ratio a little. I think,while I have it all apart I'll install the car 4 speed I have in the garage. Any comments/ideas from the worthy advisors?
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#57368 03/04/2006 2:46 PM | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Why be concerned about gas mileage if you only use it sparingly. The Pont. engine with 3.08 gears tuned right will get nearly as good mileage as the 216. It would take 10 years to save enough to pay the difference. It would lower the value of the truck, make it less dependable & less pleasure to drive. :confused:
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
#57369 03/05/2006 5:14 PM | Joined: Dec 2003 Posts: 975 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 975 | If we are voting, I would leave the 400. The 216 is not that great on gas and you will lose a whole pile of power. | | |
#57370 03/06/2006 7:27 AM | Joined: Nov 2005 Posts: 146 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 146 | i would ditch the 400. and ill be happy to take it off your hands.  in fact,i have an extra 228 GMC motor that will give a bit more power then the 216 and has a nice GMC logo on the valve cover....  | | |
#57371 03/06/2006 8:22 AM | Joined: Apr 2005 Posts: 926 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 926 | What kinda shape's it in? Stock,or rodded?I'd
rather run a GMC engine than a Chevy,if possible.
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#57372 03/11/2006 6:33 AM | Joined: Apr 2005 Posts: 926 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 926 | UPDATE-I've just been given a '53(I think) 248. It needs a rebuild. I haven't pulled it from the truck yet,the owner says it's frozen up.Missing water pump,ignition wiring and cap/rotor,starter.Where's he best prices for bearings,rings(possibly pistons too) gasket set? Anybody have a spare 3X1 intake to fit it? Who sells aluminum valve cover,side cover etc. for it? I've found lotsa stuff like that for bellybutton-I mean BOW TIE motors,but not much for GMC.This will have to be a relatively low buck rebuild,so I'll try not to mess with the hot rod stuff until I have it in and running.
Will the HEI to 235 conversion work on the GMC 248? Would it be worthwhile to have the head milled while it's apart?
Any tips,info preferred parts suppliers or money saving hints on this thing will be gratefully accepted!
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