What are some of the 1/4 mile times you guys are running with the Holley Stealthram. And what do you think a good cam is to run with this manifold on a 350L98?

 

i wouldn't go off of times as it depends on too much. what is your car running now in the 1/4 that would be a better dependant. that intake is great. if it weren't so tall it would be the best intake out there. for the price you can't beat it, but it also depends on what your expecting out of the motor.

 

i would have to say it is the best replacement intake for a TPI motor...the issue of it being too tall, its not really that tall, but its tall enuf, and if you have a stock hood, you can cut out a little 8x4 inch section and have it clear a stock hood...quarter mile times are based on so many things, but holley did tests and it showed by just swapping the intake from a TPI 350 to the stealth ram they gained 62 HP...thats a huge amount, add that with a cam and headwork and your up in the 400 HP range in no time...

 

Ya had to cut??? I didnt

Of course now I am rebuilding my engine.

One thing do not rebuild the top end with out redoing the bottom end as well.

 

Actually that was my plan, Stealthram/AFR's/Cam on my 150k shortblock. It still has awsome oil pressure (60+ psi when cruising in low rpms). As long as I keep from over reving I'm hoping I'll be ok. If I get ballsy, I might even toss a 100 shot on. So what happened to your motor?

 

thats just what i heard....i have an ss hood, so i will have no problem when I put mine on...

 

I've heard different things about this, & I'm hoping that it's an old wives' tale. I've got the HSR in my garage right now, the AFR heads are being ordered, & I'll have the cash for a matching cam by around March/April.

It's going to really pi$$ me off if I'm supposed to wait until I can re-do the bottom end (I'm intending to go with a forged 383), especially given the fact that I've only got about 70k on the car, & it still seems to be sealed up pretty well...

 

yea i'm not too concerned about my lower end...i'll never make more than 450-500 crank HP, i got a 4 bolt vette block so i think i'm good...

 

Guys listen to me please I have a HSR in my car & didnt build up the bottom end my car was putting out 400tq at the crank when it spun not one but 3 main bearings.

Most of the people I have talked to said if I would have built up the bottom end of the car this would have never happen while it was on the dyno getting test ran on it for this years race season.

 

So I take it you went with heads too right? I have heard that torqueing heads down can disrupt the bottom end enough to cause spun bearings. Then again I changed out the headgaskets on my previous camaro and never had a problem. I guess it is a chance you take.

 

Nope everything else was stock but the HRS

 

Has to be coincidence. I've heard of people doing a heads/cam/intake upgrade and then dumping a rod not long after (more stress due to almost doubling the power output,) but there's no way a simple intake change can cause main bearing problems. That minor of an upgrade won't cause a problem unless the engine is already borderline anyway.


Of course it's true that you wouldn't have spun bearings if you had built the bottom end. The bearings would all be new and the clearances would be perfect (I would hope.) But who's to say it wouldn't have spun them if you had left the intake stock?

 

True the car did have 132k Miles on the car but I ran the car a year on the track before taking it in for computer work with little problems of while running the car.

 

A year on the track with a STOCK 132k bottem end is just asking for problems. Alot of extreme duty work will definitely take its toll on your engine especially if STOCK and hi mileage. If your just gonna be on the STREET I wouldn't be concerned, If your gonna race it, be prepared for a rebuild in probably a year. My 2c

 

This car has been my race car for 4 years (it does maybe 8 races a year) & up until last year the car was 100% stock. when we decided to change the intake on the car.