I'd say this is better suited to the Briggs and Stratton section, but i wouldnt want to insult kids who make go-carts out of those engines lol. Come to think of it, they'd prolly be able to give him some good tips on how to get 7HP out of a 5.5HP motor.

 

hey,ive got a geo,and afirefly,both with 1 litre engines! you tellin me im wastin my time with my 428 scj in my 74 dually 4x4? thats it ,first thing tomorrow,im tossin the fe out on the lawn and transplanting in the 1 litre geo motor,then we'll see some major tire smoke!!!lol-billy

 

Now if you want REAL power hook them up like they do in them thar truk poolz engine to engine, you could pull an ant hill down with that much BRUTE FORCE. but seriously we should go easy on this guy considering how much of an expert he is, he's gonna come back and tell us that we dont not know nuthin bout no 460's. Next thing you know he'll shove those 2.25" exhaust pipes where the sun dont shine and blast himself off to the moon in 6.72 seconds lol.

 

It's all in how you tune 'em.

 

Well falcor1 are you going to reply or not, I know you've been back on line since you posted in the offroad forum.
I was kinda affraid that everyone would run this guy off, but I would really like to hear what he has got to say.
If you would truly like help myself, and many others will be more than happy to help ya with answers, just don't try to BS guys that are actual engine builders. Am I one of the top engine builders in the country not even, but I do know how to build race engines, and I do wish to learn from the top builders myself so when they talk I do listen.

 

It is possible to make more torque than HP isn't it? I have an issue of Hot Rod floating around some where, that had an old wagon with a twin turbo 460 making about 1000lb/ft+/- and around 600hp. The builder said he was going for torque as opposed to hp. I wasn't sure if maybe you were refering specifically to a high-horse kind of race motor or not. I'm no engine builder, nor do I play one on TV, just trying to understand some stuff.

 

Yes it is possible to make more tq than hp, but due to the mathematical formula used to figure horsepower it is impossible to have more torque above 5252 rpm than the hp the formula is (tq x rpm)/5252=hp, thus using the numbers posted by the originator of this thread of 970hp and 1050ft/lbs the peak hp would have been achieved at 4851 rpm which isn't good rpms for a race engine. Now it's very typical of a diesel to have a lot more torque than hp example is the truck I drive has 465hp, but it has 1575ft/lbs of torque which means it makes it's peak hp at 1550 rpm. do you see how that works?
BTW to figure the rpms for peak hp using hte numbers you turn the math formula around with basic rules of math so the formula to do that is (hp x 5252)/tq=rpms

 

Got it, thanks for clearing that up.

 

Quick question...Since we're still close to the subject. Should I be running 3" or 4" exhaust on a 466 street/strip engine? Basically, would 4" be overkill? I'm estimating around 630 HP so far w/o nitrous. Thanks, fellas.
(btw...Falcor1, let's let the others here handle this one.)

 

3" should be just fine for that engine. There are a couple of us here with engines in that general range running 3" exhaust. Unless you're running a race engine that is operating at high RPM all the time and is feeding a huge amount of air in there's no need to go larger. It would really be something more for a big stroker.

 

im running 3 " dual exhaust on my 428scj on propane it has no trouble breathing.my tips are 5",just for sound effects and the overkill look. a little off topic,how many miles per year do you put on your monster truck Ivanribic?( my truck see's 1000 miles a year.)

 

Well I had it parked for quite a while to work on it and tweak things. I've put about 200 miles on it in the past month. I only drive it a couple days a week, gas is expensive and it really eats it up too. I get 4mpg if I drive nicely . . . but who does that?

 

ivanribic,i know what you mean, i love driving the old truck ,but i cant keep selling my wifes jewellery to pay for fuel,lol, i just got a 2001 ranger supercab 4x4 2 weeks ago to replace my geo as a daily commuter into vancouver.-billy

 

Forget the jewelry. Sell the wife instead.

 

fixed it for you. I am sure this is what you meant cause sellng her just gets income one time.