LUVTruck.com

Well im getting a 500 short block for $200
Ill be combining that block whith my 425s heads to make 10:1 compression. Should mkae for a fun ride. Whith that and an edelbrock intake ill probly be making 500+lb ft and close 400hp. And ill be into the engine part of the build $1200. I dont think you can get much more hp for much cheaper...

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1980 LUV 4x4, going under re-construction...

man your just goin nuts on that thing. its gonna be a torque monster!!

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"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

yeah the best part will be seeing how much abuse an Isuzu 8.6" 12bolt will handle

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1980 LUV 4x4, going under re-construction...

your evil, just evil

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"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

haha that is awesome!!

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!!!FINALLY!!!
-1977 Luv mikado

humm well i ran this idea acrost the guys on the cad perfromance website im on and they dont seem to think its a good idea. The 425 heads have better port velocity than the 472 and 500s but i guess the valves are tuned for the engine. So if i did run 425 heads on a 500 it would be realy snappy to about 3K rpm then it would start to cavitate and starve itselve for fuel. Seems kinda wierd to me but i think im going to trust the hardcore cad guys on this one. So i guess its back to just having 400lb ft whith a 425 untill i can build a 500 up right...

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1980 LUV 4x4, going under re-construction...

If you get the right cam and tune your carb right the heads will make plenty of power and have a strong poweband. I understand what they are saying about the heads but it can be "tuned around" with the right parts

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79 luv drag truck
2 skidoos
2 quads
badass duramax diesel

i belive the cady northstar v8 is fuel injected. dont need to tune a computer unless you want even more power!

mepr has a 425 ci bigblock caddy motor outta like an edorado.

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"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

Its from a 77 Sedan Deville. The eldos ran 500s untill 79 i think
However its still vary easy to hit 400+lb ft whith a relativley stock 425. What i have slatted right now it modifying the 425 intake ports so i can use the Edelbrock performer intake for 500s and 472s on it. Ill try to pickup some fleetwood exsaust manifolds ($80 per) so it breaths a bit better as i doubt i can get headers in there. I have an 800cfm Edelbrock carb for it right now. Whith that i should be well into the 400lb ft realm and probly be pushing 250+hp. Then i just need to get it to rev a bit for drag racing. Forst mod there is swaping in Buick 455 rocker shafts as the cads use Ts for the rockers and tend to break at much past 5000rpm. Then ill start looking at the after market I-beam rods to replace the stock ones that typically give out at about 5500rpm. Alot of guys have done that stuff to 500s and they will handle 6000rpm no problem. The 425 has a lighter crank and also pistons and rods from the smaller bore and stroke so i should be good for at least 6000rpm. I hope the 12bolt Isuzu can hold up though, becouse whaith that rear it should look like a lowered stock truck whith a tonue cover to hide the rad. and fuel cell, maybe a nitrous bottle...

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1980 LUV 4x4, going under re-construction...

so its gonna be a 2wd now? i dont think youll be running any 13.5s with that isuzu 12bolt though. what gears does it have? 456s? 411s? you bee all revved out at the 1000ft mark ith that combo. even if you can get it to rev, which will be very expensive i might add, you should use numerically lower gears to utilize the torque made by the motor. you should run like a set of 325s or something in that area to get the thing movin. now if you run the 12bolt youll need to run a really tall set of tires to compensate for the low gearing.

now im just saying this cuz it what ive read. theres a issue of hotrod magazine where they put a cad 500 in a chevette. they used a mustang 8.8 rear with 2.73s and pulled a 12.2. the motor was all stock exsept for they changed the heads to the arly smaller chambers and that gave it 12:1 compression. thay had no stall either and they were pullin 1.6 60s.

so im just sayin

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"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

well bear in mind ill be running a 31" tire to "band aid" the gears. Im looking at pups for the axle so ill either have 4.30s or 4.10s. Im going to run whith that axle untill i have the cash to narrow down a 9" i have from a truck. Then ill be running 3.00 gears. As far as the compression thing, yes. You can bolt 76cc 472 heads onto a 500 and get around 13:1 compression. Im betting they did something to lower the comp ratio a bit more. The problem is that cads wrist pins dont like that much compression. A buddy of mine in olympia tried that combo and it lasted him 10 runs down the 1/4 before a pin let loose. Now he has a junk 500 block. But the rod never even punched through the cylinder wall, so that says alot about how these things are made

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1980 LUV 4x4, going under re-construction...

Any of you guys remember Hot Rod Magazines "Caddy Hack"? it was a pretty funny article they did way back (I think late 80's). they took a Caddy with a 500" motor and filled it with junk. people, surfboards, etc. just filled it to the top. ran some 1/4 passes at the strip and then started unloading and making more passes. finally they started cutting the body apart a little at a time. the car progressively got faster and faster due to a better power to weight ratio. finally they got the car down to frame rails with a plastic race seat and added a roll bar hoop for safety. the end result was that I think they got the car into 12's or 11's bone stock.

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1978 LUV Truck 2WD
450 "Small Block" Chevy
3.70 Ford 9
28x10 Goodyears

one of the guys i work whith was telling me about that. Said a LUV dosnt wiegh much more than Caddy frame rails. He was just messin whith me but he proble isnt too far off
As far as 2wd or 4wd, im still kinda undecided. Im just going to start gettting the engine and stuff in there and as the time comes ill just buy the apropreit axles.

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1980 LUV 4x4, going under re-construction...

Is the Cad forums CMD? My 68 repair manual gives a listing for the 1970 500 was 400hp 550 torque and was with 10-1 comp. I like the Cad motor myself

Hey guy you ought to stay with the 500 build it will be more than worth it. I have some nasty 500's and rule number one is the bottom end dose not like 6000 rpm's, there is so much iron moving that it knocks the mains out, that is unless you like tearing down the motor alot. I put a stock 70 Eldo. in a 78 chev. stepside with a 2.73 posi rear and would run high 12's to 13's shifting at 5200rpm, of course this if i could get it to stick. These stock are rated at 550 tq at 2800 400 hp at 4000. Build your 500 with the 472 heads Edelbock manifold,a after market cam and you will be knocking on 600#torq. 450 to 460 hp, with 3.00 gears 31" tires you should be in the low 11's. The wrist pins are not weak in the cad motor the 40 year old pistons are. Here's another one, try finding a set of 400/425 Old's rod's and 403 old's pistons now you have 10.1 comp. 7" long rod's (cad's are 6.75) with the stock head's or about 13.5to14.1 comp. These motors like the Buicks will run all day on compression ratio's that would kill most other motors. Pick your posion and go for it.