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Author Topic:   anyone ever try a cadi..
banshee
Dirt Roller

Total posts: 6
posted December 18, 2001 04:05 PM
Anyone ever try a 500 cadi in mod ? These motors make gobbs of torque/hp with little modifacation..

Chad
Dirt Maniac

Total posts: 113
posted December 18, 2001 05:18 PM
I ran one about 4 yrs ago. Edelbrock has come out with a manifold to make the fuel distribution better, but the down side is the valve train. We geared it to run at a max of 5400 RPM. You will need some tall gears if you intend to run a larger track. We were going to try and retro fit a big block dodge shaft rocker system to the pedalstal system of the cadilac. Never got around to it, but my partner was able to fabricate aluminum spacers to utilize small block chevy valve springs and the stock cadillac valves. Get the valve train fixed and it would be a good combination. It was about 180 lbs heavier (if my memory is correct). You will also have to custom fabricate a set of headers. It is a huge pain and you have the weight penalty. I'd stay with a Chevy. Just my opinion.

banshee
Dirt Roller

Total posts: 6
posted December 19, 2001 09:17 AM
I have actually tried this combination in the Sprint Car class and it worked rather well. The only problem that I am forseeing is the 8 inch tire. Yes, the valve train was a bit tricky to get figured out, but it was quit easy after spending around 3500 for the dodge roller set up. This motor in the unlimited Sprint Class was very dominating and got a **** of allot of looks from other drivers....
quote:
Originally posted by Chad:
I ran one about 4 yrs ago. Edelbrock has come out with a manifold to make the fuel distribution better, but the down side is the valve train. We geared it to run at a max of 5400 RPM. You will need some tall gears if you intend to run a larger track. We were going to try and retro fit a big block dodge shaft rocker system to the pedalstal system of the cadilac. Never got around to it, but my partner was able to fabricate aluminum spacers to utilize small block chevy valve springs and the stock cadillac valves. Get the valve train fixed and it would be a good combination. It was about 180 lbs heavier (if my memory is correct). You will also have to custom fabricate a set of headers. It is a huge pain and you have the weight penalty. I'd stay with a Chevy. Just my opinion.


banshee
Dirt Roller

Total posts: 6
posted December 19, 2001 09:18 AM
Chad, by the way what type of tranny-setup did you run with the cadi ?
quote:
Originally posted by Chad:
I ran one about 4 yrs ago. Edelbrock has come out with a manifold to make the fuel distribution better, but the down side is the valve train. We geared it to run at a max of 5400 RPM. You will need some tall gears if you intend to run a larger track. We were going to try and retro fit a big block dodge shaft rocker system to the pedalstal system of the cadilac. Never got around to it, but my partner was able to fabricate aluminum spacers to utilize small block chevy valve springs and the stock cadillac valves. Get the valve train fixed and it would be a good combination. It was about 180 lbs heavier (if my memory is correct). You will also have to custom fabricate a set of headers. It is a huge pain and you have the weight penalty. I'd stay with a Chevy. Just my opinion.


Chad
Dirt Maniac

Total posts: 113
posted December 19, 2001 04:44 PM
quote:
Originally posted by banshee:
Chad, by the way what type of tranny-setup did you run with the cadi ?

We ran a chevy powerglide. My partner fabricated the drive flange on the back of the crank and used the engine mid plate to properly locate the tranny with the motor.

Pickles
Dirt Maniac

Total posts: 144
posted December 21, 2001 11:01 PM
Go to www.cad500parts.com Got all you will need.

techmaster35
Dirt Freak

Total posts: 259
posted December 25, 2001 09:38 PM
MY EXPERIENCES WITH 500'S ARE THAT THEY MAKE THE BEST POWER AT IDLE TO 3500 RPM'S AND AFTER THAT YOUR LOOKING AT A NICE BIG WHOLE IN THE BLOCK WITH A ROD POKING OUT THE SIDE. THEY CAN RUN HIGHER THAN THAT IF YOU EXTENSIVELLY MODIFY THEM BUT I WOULD STAY WITH THE CHEVY MOTOR OR A 455 PONTIAC BECAUSE IT DOESN'T WAY MUCH MORE THAN A 350 CHEVY AND MORE HORSE POWER THAN ANY OF THE OTHER BIG BLOCKS. I LIKE THE DODGE ROCKER ARM MOUNT TRICK.

Pickles
Dirt Maniac

Total posts: 144
posted January 07, 2002 01:44 PM
You might want to check your library and see if they have a copy of "Stock Car" magazine, Feb 1991 page 92 for an article titled "Dirt Track Cadillac".

Pit Bull
Dirt Full Roller

Total posts: 65
posted January 08, 2002 12:35 AM
I ran a 455 buick in my cruiser car last season, and I loved it. It had tons of power from idle to 5500 rpm. It is the lightest of the big blocks by far, but requires modifications to the oiling system, and parts are NOT cheap, and are hard to come by. TA performace is the best source for parts for the buick. In a recent build-up in Car Craft, the Buick beat all the other big blocks that were built and tested, including the 454 chevy. The only mods I did to this engine were a larger speed-pro cam, special melling oil pump, drilled out the oil pickup in the block to 5/8 and added a larger pickup. I was very happy with the results.

Pickles
Dirt Maniac

Total posts: 144
posted January 18, 2002 10:39 PM
Concerning the weight of various engines; There is a book titled "Race Car Fabrication and Preparation" by Steve Smith of Steve Smith autosports (I think there is a web page

On page 6 of my copy there is a chart of many engines giving 7 different outside measurements of each engine. Also, it gives the weight of the engines.

Some of them are:
Buick V6 370lbs, Ford V8 351ci 460lbs,
Chevy V8 350/400ci 550lbs
Buick V8 455ci 600lbs
Pontiac V8 455ci 640lbs
Chevy V8 454ci 625lbs
Cadillac V8 500ci 600lbs
...and many more.

DodgeBoy76
Dirt Full Roller

Total posts: 73
posted January 29, 2002 10:00 PM
There is a guy that runs a caddy motor in his modified with us, and he will pull anyone out of the corner, but cant run with us at the end of the sraight. This was the first person i have seen run a caddy, and i was very impressed!!

banshee
Dirt Roller

Total posts: 6
posted January 30, 2002 09:26 AM
What type of fuel does he run ? What tracks does he run at 3/8,1/2. I am curious if he is running out of power, or he is just set-up wrong, " to much gear ". Any help would be appreciated.
quote:
Originally posted by DodgeBoy76:
There is a guy that runs a caddy motor in his modified with us, and he will pull anyone out of the corner, but cant run with us at the end of the sraight. This was the first person i have seen run a caddy, and i was very impressed!!


WesternAuto17
Dirt Freak

Total posts: 248
posted January 30, 2002 03:07 PM
With a 4000 rpm red line, its gonna be pretty easy to have too much gear. What I've read is that a 500 with "little modification" isn't musch good a "little" over 4000 rpm. Tons of power and torque, realtively light, but you're gonna pay for that at the end of the straightaway when a piston leaves the building.

banshee
Dirt Roller

Total posts: 6
posted January 30, 2002 03:41 PM
The reason that I asked on the rpm is that, like you stated, they dont like rpm above 4000 on a stock motor. The problem that I am concerend with is not enough tire for the power that I have. I have a cad that was built to turn around 6500-7000 range that I was running in the unlimited Sprint Car Class before they changed the rules on me, and with a ton of money invested in this set-up, I was wondering how it would work with a 8" mod tire. The RPM is not a problem with my motor, just the tire size.
quote:
Originally posted by WesternAuto17:
With a 4000 rpm red line, its gonna be pretty easy to have too much gear. What I've read is that a 500 with "little modification" isn't musch good a "little" over 4000 rpm. Tons of power and torque, realtively light, but you're gonna pay for that at the end of the straightaway when a piston leaves the building.


Pickles
Dirt Maniac

Total posts: 144
posted February 01, 2002 11:44 PM
Banshee, what did you do for an oil pan? Build your own or find someone who makes a circle track cad pan. Larry Kruzick used to supply them but he sold the business and the new people dont have them anymore.

banshee
Dirt Roller

Total posts: 6
posted February 04, 2002 09:32 AM
I had one built by the people at Hambarger pans. You may want to hang onto your pants when they quote this pan, since this is not a standard piece from them. The pan they made me was around 800, but it is rear-dump/10 quart and works great," as it should for that price"


quote:
Originally posted by Pickles:
Banshee, what did you do for an oil pan? Build your own or find someone who makes a circle track cad pan. Larry Kruzick used to supply them but he sold the business and the new people dont have them anymore.


Pickles
Dirt Maniac

Total posts: 144
posted February 05, 2002 10:13 PM
Ouch!! I think I'll try my hand at building one. Thanks for the answer.

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