Haven't done AutoX yet, its different even for them as they are seeing about half of the speed I would normally see. Alot of those guys never get out of second gear.

 

no such thing as too much.. even road racing. unless you can litterly spin the tires from corner to corner. just look at the can am cars of what.. early 80s.. turbo era.

for a street car, assuming a nice broad curve.. 1000hp is about right. thats my goal, and having ridden in a few 1000hp cars.. its pretty much the limit for a street car, as it spins the tires even from a 100mph roll(perfect )

NA.. I don't know why anybody woulda want to try to build a 1000hp NA motor for a street car, unless it was to run a certain class.

I nice 6xx BB with a pair of GT76s hanging off of it. 1300hp on pump gas.. mm mm good

 

Sure, no such thing as too much provided you can stick to the ground. I dont have enough grip from weight or downforce, at least not yet(?).

Yeah, those earlier cars were crazy, until the restrictions and eventually going away from turbo stuff. Still though, with a thousand HP in almost any car, without a hot driver I fully expect someone to make a jackass of themselves, if they dont put it into a wall first.

 

I have a gm performance magazine in my restroom, where they took a stock 502 and put a blower grind cam, and a blower on it and made around 1000 hp.. Next time I take a visit to the restroom I'll post some specifics Definately sounded good for the budget minded racer..

 

Kind of, big blocks and blowers aren't cheap, SBC stuff is still cheaper, but for not pushing the engine too hard yes I like cubes.

Big radiator and big intercooler for road racing though, for a street car not so tough though (avoiding overheating). Even when stock my 4th gen radiator was being pushed on a road course, the 240Z though has such a small engine (2.4L) that I dont see any kind of heat on the track, radiator isn't much smaller.

 

Right on. Thanks for the replies guys, just wanted to stir some stuff up, lots of good info here.

 

For simplicitiy sake of course. Like mentioned before, it's plenty feasable with enough cubic inches and you don't have the expense of turbos, intercoolers and all the other stuff that goes with it.

On the price issue... I don't know how many of you guys have tried to build a 1,000 hp small block but it is not a cheap thing to do. Big blocks have become so popular these days that you can do it much cheaper going that route. Chasing big block power numbers with a small block is $$$$$. Been there, done that.

-Mindgame

 

Well.. GM has a new crate engine 572CID pumping 720HP... now..

I dont see it that difficult to run it to 1kHP adding a simple supercharger pumping 5psi...

I know this is NA but even then I dont think the 572CID would have much trouble getting there...

 

I guess money is all relative, but Hot Rod had a big block 565 CID motor making 1054 on 91 octane. They said it cost around 30K, but that seems pretty reasonable considering I've seen some people with 10K shortblocks on this site. It was made for a boat, but they did say it wouldn't have a problem in a street car with a decent cooling system. Its not something I would want to build up in my garage, considering how meticulous they were. I wonder how much would power would be lost going to EFI?

 

I beg to differ with the "there is no such thing as too much" idea. There is, relative to the available traction. In the past, I never thought this was possible. But that was because I had never experienced it. Recently, I have had experience with two cars that have made me rethink. My friends Mustang has a small block and a positive displacement blower. Makes ~750rwhp but has close to 700ft lbs at the wheel all the way from 1,500rpm to the redline. The car weighs 3,350lbs. With street tires, there is simply more power than you can use. With the nitrous on, my own car is close to having "too much". In last years configuration, primarily because when the nitrous would hit it would break the tires loose (even in 4th gear at ~85mph), there was clearly "wasted" hp. Of course, I could leave the nitrous off. And the setup on both cars could be changed to tame them for the street. I could have used a staged nitrous system, and my friend could change pulleys, etc., and leave the hp for the track where traction is better.

That doesn't mean you might not want "too much", esp. with a street/strip car. But it means that on the street, the car wouldn't be any faster with more hp, so it would be wasted in a literal sense. In fact, that's one reason I am changing my setup for next year. I am gong to make more power with the blower and use only as much nitrous as I need to reach my goals. I will probably never turn the nitrous on when driving with street tires. And I am getting better tires!

As far as 1000hp NA, I wonder if a big cube small block couldn't do it on pump gas if the 4-valve Arao heads were used. We are talking a bit more than 2hp/ci. Doesn't the Honda S2000 make nearly this much hp/ci? I understand that it's easier to get a high specific out put with 4 small cylinders than from 8 big ones. But we are talking a "sky is the limit" buildup, right? Titanium rods and such are allowed?

Here's my cost and parts list for a fuel injected 1000hp small block.

Tall deck Bowtie block or equivalent and prep $3K
Rotating assembly $7K
Arao heads/valvetrain $8K
Custom intake and exhaust $5K
Engine management system and tuning $4K
Fuel system $1K
Odds 'n Ends $2K

So, maybe $30K. Would it make the required ~2.1hp/ci on pump gas? Not sure, but I think it'd be close.

Rich Krause

 

I think it would be much cheaper to aim for 700HP and maybe a handfull more (take a handfull to mean whatever).

While Shelby "proved" that you can't have too much horsepower in a road car, it can easily be more than is neccessary for the car, and again for most drivers will cause more harm than good in lap times, and danger factor.

 

You could also do this with:

A 572 BBC Tall deck block

500cfm heads (no rules on chamber, valve angle etc.)

Single Plane Intake

Soild Roller

12:1 Comp

7,000rpm Street engine,

It could be done. 1.75 hp per cube, 106hp per liter. All NA that's not too hard nowadays, it's just $.

That's just a really expensive BBC derived from the Engine Masters entry I'm looking at for 2003. It can be done, it's gonna cost about a years pay ($30K) for most guys though.

As Rich said, it's too much for the street. 850+ ft lbs and 1000hp.

Bret

 

in one of those Hot Rod magazines or something someone built a 565 on pump gas and one 1050 dominator with some 12* Pro-Filer heads that made 1050hp...dont remember what kind of cam etc. they were running though...

 

Yeah, but it's too "easy" with a big-block! The real issue (with either a big or small block) when you approach these hp levels is putting together a car that can handle that much hp. Gotta add another $30K for that exercise as well.

Rich Krause

 

sorry but there is no possible way to make 1000 hp on pump gas with a small block chevy, period, even if you go buying the 14* pro action heads or the new edelbrock Chapman 15* heads that flow 425 CFM your not gonna do it with a small block...