Thread: 500 cu in cadillac

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Been thinking about a slammed deuce roadster with a 500 cu in caddy... I've read that the caddy (with an aluminum intake) is only about 60 lbs heavier than a chev small block... Anybody out there ever try this combo ? I think the TH 400 trannny works with this engine but I think a stick shift would be too cool... Any idea what 4 speed tranny would be a good fit...?

Thanks

watch your rear gears the 500 caddy motor likes 2.73s to 3.55s look for flash cadillac in albquerque all they do is caddy motors

Maximum torque specialties will have all the answers to any questions about installing 472/500 caddy engines, they specialize in these types of instillations their # is 262-740-1118. These engines are awsome, the 1970-500 caddy engine makes 400 horse power w/550ft. pounds of torque @ 3000 RPM's straight from the factory. Have fun! -Kurt

the cadillac 472 and 500 weigh in at 600 pounds,the chevy small block weighs in at 550lbs. Sounds like a cool project go for it!

Thanks to all that have answered my questions about the caddy / deuce combo...

Try pontiac or olds manual for the proper bolt pattern!!

Anyone know if a person can splice a 70 coupedevil front frame clip to a 69 chev pickup

Originally posted by techinspector1
with a mig, a cutting torch, a Sawzall and a good hand grinder, you can splice anything onto anything.

AMEN TO THAT!!

Some things not mentioned about the 4 spd conversion; the caddy crank is not drilled of a pilot bearing (any machine shop should be able to handle this). Bolt pattern for the flywheel (I think it's the same as pontiac) and finding a tranny that will handle 500 FP of torque.

Hey there,
I am running a 30 over 500 Cadillac in a 66 F-100 pickup. I couldn't be happier with the combination. It produces 40 lbs. more torque that a 70 LS1 454/450hp at half the rpm's. This is a motor for the real world. Don't expect to take it through the traps at 7,000 rpm's. In fact it's best to keep it under 5,000. What makes the difference if you're make 550 ft. lbs. of torque @ 2800.
It is definately to your advantage to use the Edlebrock 2115 manifold. It made a lot of difference. I used a mild Comp Cam for esthetics more than anything. This is an honest 400 hp engine. If you can keep your foot out of it the mileage will be better than a lot of passenger cars. Another plus is your do not need a lot of gear. You're actually better off letting this thing grunt it out. The only difference between the 500 and the 472 is the crank and the pistons. The only way to truly tell them apart is the letter (J) on the crank casting.(don't let anyone tell you differently.) You can run the motor on 89 octane if you want with no problems. I used a 800 cfm Edelbrock carb. Make sure you dial it in. If you can use an upgraded ignition. Cubes always like some extra spark. I got an inexpensive set up through Summit that has 55,000 volts. Hope this will help.

tirekicker

[QUOTE]Originally posted by tirekicker
[B]Hey there,
I am running a 30 over 500 Cadillac in a 66 F-100 pickup. I couldn't be happier with the combination.

Welcome to Club Hot Rod. I have read numerous articles and for years have considered doing something like that.

Your ride sounds like a lot of fun.

my newly aquired 73 eldorado is sitting in my driveway. i am pulling the engine over the easter holiday and going to start getting it ready to go in my t bucket. i am runnning 3.50 gears but with tall 32 in tires. got my olds 400 trany ready to go.
as far is i have figured i can use the convertor from the caddy tranny. i for shure will let you know once the snow is gone what itll run like.
it shur spins the tires on the edorado now and its needs a tune up bad.

Check this caddy motor out, 1000hp and 1000ft.lbs of torque.

~ Vegas ~

coooooooool !!!!!!!!!!!!!!!1

And look at the caddilac that motor bolts into. Fittingly, its called the Sixteen. Its a concept car.