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Old 02-21-2011, 01:52 PM
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I need advice! SBC for my 39 Olds

I have a 39 Olds sedan that I want to install a late model SBC and overdrive auto into. I am going to use an S10 front clip and a Ford 9". I don't have much knowledge on available SBC choices, but I want the drivability of a computer and the power to light up the rear tires at will. I am on a tight budget to boot. Advice?

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Old 02-21-2011, 03:41 PM
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Quote:
Originally Posted by jamotorhead
but I want the drivability of a computer and the power to light up the rear tires at will. I am on a tight budget to boot. Advice?
These three usually do not mix ...

Computer control means you need something late model.
Late model means $$$.

The power to light the tires at will ... means big $$$.

A tight budget means no BIG $$$ ....

SORRY , but it is true.

Best case scenario ... buy a wrecked late model High Horse Power Camaro or Corvette ( even more $$ ). Harvest the O/D and the engine along with the computer.

A Big Block Chevrolet ( 427 or a 454 ) would be able to do what you want easier. If you have the $$$ ... a 502 or 572 crate engine will do it even better.

Your main problem ( other than a TIGHT BUDGET ) is the 39 Oldsmobile is a TANK. It takes serious HP to light the tires at will.



Both my 32's will fry the tires ( at will ) but they are light ( 2200 pounds roadster and 2500 pounds coupe ) and have 430 HP each. Getting a SBC to get in the 400 HORSEPOWER plus range is usually not a tight budget build. Your Olds has to weigh at least 3500/4000 lbs ... so you would need closer to 500/550 HP to have the same HP to weight ratio as my coupe and roadster.



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Old 02-22-2011, 07:00 PM
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Have you thought about using an Olds engine? The late 60's Old's engines were good runners. They're out there still and I wouldn't rule out using a late 70's 403. With some mods and a good gear it would run well on the street. JMO
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Old 02-25-2011, 05:14 PM
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Start searching for 5.3 and 6.0 ls type motors. Typically Chevy truck 1999+ type. They are plentiful and cheap. There has been quite a few articles lately on picking them for under $1000, keeping the injection and using a stand alone harness. A lot of guys are able to pick one up and get it on the road for under $2K. Something I have noticed about these motors are their longevity. People are pulling them apart with over 200k and finding the internals to be in great shape. This is the route I'm going with my 48 coupe. Untouched they are 300+ hp and 15+ mpg. It's been dyno'd over and over that a simple cam swap puts these around 400hp easily. BTW all GM trans will bolt up to these late style motors with the use of a certain flex plate and spacer. So you can use any old turbo 350/400 or 700r4 if you want to keep it simple.

Here is a great link to a guy who has swapped many of these into street rods, muscle cars, trucks, ect..

http://www.ls1tech.com/forums/conver...de-1500-a.html

hope this helps, Good Luck
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Old 02-26-2011, 06:29 AM
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Jamotorheads 39 Olds repower question.

Thanks to you all for the input. Good food for thought. Got to work on getting the most power bang for my few bucks. I'll be back with more questions.
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