what about a nice built up 350-383 with a holley stealth ram and if you want, get a procharger supercharger. But I don't think you even need all that , I think with a few things like a cam and a bigger intake, alls your going to needs is the right set of gears to get the torque that you want. LT1's already have alot of torque, you should just get a better induction system so it doesn't die off at such an early RPM. And make sure you get a good drive line that can handle and transfer all of the high torque your looking for.

 

Good advice. I'll be wanting the power of forced induction, though. The guy who fit the m112 under the hood is rooster93v8. Do a search on his user name and you'll see a very cool project. It's a roots style blower under the hood. He's got it running now with 9 psi. A lot of people like me are hoping he'll offer a kit or at least very detailed plans. The horsepower numbers aren't massive compared to some setups, but the off idle torque has got to be incredible. What he's done is almost exactly what I want. I'd probably do that and when the rings go, stroke it out to a 383 with a blower cam and maybe heads. Hopefully water/methanol injection. Maybe an intercooler, but then I'd have to get an aftermarket hood and one of the big draws to this is that it could be reasonably cheap.

 

His name is rooster93v8 Here is the link

Eaton Blower post on F-body

Anyways...

The problem is not the hood... the problem is the cowl itself... the windshield is too long and too declined so the engine has to fit under the windshield... its not like the corvette where the hood clears andthat is it...

 

I know that you rulled out a BBC but if you are looking for pure torque then why not go with a 472 or 500 inch Caddy motor from the 70's. I have a buddy of mine who is a Caddy freak and he put a 500 in a 82 2 door with a TH400 and put down 550 lb/ft at the wheels. That was with only cam, intake and headers. It would have put down more but the dyno wouldn't read below 2800 rpm. The biggest I would go for a SBC would be 434. It might not be the biggest but it also wouldn't be as expensive. Just my opinion. You will, most likely, have to change you setup also if you are going to have a motor that makes alot of torque. Most motor that due that dont like to rev because they have a very big stroke and really long rods. I think the Caddy motors have a rod that is just shy of 7 inches. Long storke and long rod make for crazy piston speed. My buddys Cadillac hated 373 and 307, but put 273 and it went 13.6 @ 100 with a race weight of about 4200-4400 lbs.

Michael

 

You don't know the hours I've spent daydreaming about the havoc I could wreak with a just a mildly modded caddy 500. They can be had for a song, because the uninformed think they are nothing more than either a. (a device for disposing of gasoline as rapidly as possible) or b .( a glorified boat anchor). I hear parts are expensive, though. The caddy guys are coming up with some good tricks. They are getting fuel injection by modding a ford 460 intake to fit. I don't know how well that can be tuned, but it's gotta be better than a carb. I don't even want to know what forged pistons would cost.
The thing is, I don't think it would work well for me in this context. I dropped the idea of the big block because of the AMAZING complexity of the install. I just don't have the facilities available to get it done properly. I think I would probably run into the same thing with the 500 caddy. I would dearly love to run an injected 500 caddy in a 6 speed f-bod, but the cost would be way too high. How much would I have to spend just to get the tranny to mate up? How much fab work to get things to fit right? I just don't have the facilities to get it done. Think about just 5 psi from a roots blower combined with a 500 caddy. Now think about something nasty to make the wood go away.
I would also like to put a 500 in something like a chevy monza. Take out the fenderwells. Put somewhat wider tires on it. (Not too big, don't want to give anything away.) It would be quiet, and nobody would have to know a thing, until it was waaayyyyy too late.

 

My buddy is has a 540 stroker Caddy that he wants to put in a Chevette. Most of the parts aren't that expensive its just that there aren't that many out there. A company just started to make aluminum heads about a month ago for those things. He hopes to put down about 650 to 700 lb/ft at the wheels with the stroker. Its all forged and way bitchen.

 

If pump gas is your deal... get a 7L from the lsx block and put a YS-trim there.... you should get around 650-700rwhp on pump gas...

 

That would be great, but once again I find myself dogged by the demons of finance. I'd love to build a monster stroker LTx or LSx, but that gets VERY expensive. Especially if I then add a centrifugal to it. The roots on an LT1, upgraded to a 383 when the bottom end starts to go will probably be my limit. Fortunately. it seems that a LOT of torque and hp as well could be had that way. Run high boost combined with water/methanol injection, low compression, good heads, blower cam, and good exhaust. I should be set. The torque from 14 to 15 psi should be jaw-dropping. Remember, torque is what started the whole idea. I find myself being limited by cost, but I think I can overcome that with this type of setup if I do it in stages.

 

Although the cost of roosterv8 is not that much it is still "destroying" a car to make it fit... I wouldn't do it...

 

I read through this post and all I can ask is have you been in a late model LT1 with a centrifugal? Heck, I just blew up a 355 LT1 with a hotcam and ported heads along with 6#'s of powerdyne understimated boost. The car was frickin' SICK. Traction was non existent in all three gears with the 4.10's and I murdered my buddies supra on the highway from a roll because my low end allowed me to jump him about 4 cars before he started to real me in with the supra high end which by then was too late.

Torque is a bunch of fun but too much is completely useless, even riding around on slicks (been there). I've been in some high hp rides and have owned a few myself and in my opinion it doesn't sound like you realize the true potential of whats available for really a small cost.

You've already stated funds are tight and thats where I specialize. You can go fast without spending a bunch of cash but you need to put the right combo together and realize the 'used marketplace' is your friend

Not trying to flame you but you can build something to run circles around that prized 455 you had without spending half the money you think.

 

Not all Caddy owners use Caddy engines.....

The car.....

The engine.....

 

All he did to the car itself was cut couple inches of a notch in the cowl. I wouldn't mind doing something like that. If I had a rare car, then it would be a different story for me.
I like the low cost and the constant torque. The complexity seems to be high, so I'll probably only give it real consideration if he makes a kit or VERY detailed plans.

 

I can't say that I have ridden in a car like that. I'm just looking at torque curves from dyno sheets guys have posted. I know that's not the same as riding in the car, but it's all I have to go on for now.
Why did it blow up? Was it from RPM? That's one of the reasons I want to stroke the engine, to keep rpm down while still having monster power. They say that rpm is an engines downfall, even more than massive power. Don't take this as a put down on you or your car. I'd probably love to have one just like it. "Traction was non existent in all three gears with the 4.10's" That's my kind of power!!! I'd just rather do it with less rpm and less gear, hoping to increase reliability and (gasp ) mileage. (What? Did he really SAY that?!?!? Quick, stone him before he infects anyone else!!!)
As much as I hate to say it, you're right about too much torque. (Somebody SHOULD stone me for THAT). My whole thing with torque is centered around the daily driver useage. When I give it part throttle, I want something to happen and I don't want ANY hesitation. That was what I liked about the 455. The problem is that at that point you have to really learn how to use the throttle when you give it full power and somehow not burn the clutch.

"it doesn't sound like you realize the true potential of whats available for really a small cost. " You're probably right. I certainly hope so.

"You've already stated funds are tight and thats where I specialize. You can go fast without spending a bunch of cash but you need to put the right combo together and realize the 'used marketplace' is your friend

Not trying to flame you but you can build something to run circles around that prized 455 you had without spending half the money you think. "
Good, I hope I can learn how to do this on the cheap. I have absolutely no problem doing minor fab work that can be done with Joe Average tools or buying used parts. If I can buy 2 things used or 1 new, and they are of equal quailty, then I am all for the 2 used parts. I'm not proud about things like that. I just don't know how to tell which parts should be bought used. How do I know if a used s/c is going to be any good? You know what I mean? Any help on that score?

 

I've heard great things about the Lysholm twin screw supercharger. It is supposed to have many of the positive characteristics of the Roots but without many of the problems. I don't know much more than that but it may be worth looking into. I hear that it is very expensive though.

 

thats gorgeous!