Humm......Interesting! Asked Jeb before I bought the intake if he had any dyno data and he said no, so to my knowledge he is basing this upon me e-mailing him my before/after dyno sheets. And yes, it did pick up bottom and midrange with the existing cam and he does seem to be quite knowledgeable.

Still think the right cam will pick the top end up. Again, we'll see but I sure see a lot of longer intake runners on cars running a whole lot more rpm so something is going on that makes them pretty fast.

Craig @ GTP was doing the stock intake cut and weld stuff 8 years ago and a friend bought one. He had problems making power when I saw the car but claimed to have gotten it into the 480's in a 383 with AFR 227 heads and a big solid roller cam. Haven't seen any dyno sheets to substantiate his results and we all know how that stuff goes.

 

I dont see a stock manifold maxed out making more AVERAGE power than that sheetmetal or ANY longer(than stock) runner manifold..aint happening.


Pops and I had a buddy here in town, a 383, Holley stealthram(was not cutdown), Pops grind solid roller cam, monoblade throttlebody, 42 lb injectors,stock casting LT1 heads, 1 7/8 headers, 3 inch dual exhaust and a FAST system. At 3350lbs it ran 10.40's on motor, was never tuned to get the best out of it, easily had a low, low 10 second slip in it.....but he changed direction with the car.......I think his stealthram made that engine....but hey thats just me.


David

 

Nice Did you evere get to run it?
What did you make for power?
How much longer are the runners on that than stock?

 

Well I just started looking through my GMHP Sept 2006 catalog and saw that Edelbrock makes a Performer RPM LT-1/LT-4 TB Intake for our cars #7107 LT-1 & #7109 LT-4 but I can't find it on thier site??

 

Here is a quote from another board, someone emailed Edelbrock about those intakes in February:

 

Well that is just crappy

 

I only know of one LT1 with a different intake, it was made by Hogan. Its on a 391 with AFR heads. On the motor, pump gas, race weight with driver at around 4200lbs it traps 122mph. Thats around 600hp to the rear wheels based on weight and trap speed. I'm thinking that the intake becomes a restriction at some point, but where? With all the LE and AI stuff running around putting down 400hp+ to the rear wheels it looks to be in that area.

BTW Check here for intake pic again: http://memimage.cardomain.com/member...07_20_full.jpg

 

Made 483 rwhp with a stock (ported and welded) intake with hydraulic cam.

 

Need to make it .com and not .net

 

That's more like 600 hp at the flywheel, not the rear wheels. Probably <500 rwhp.

Mike

 

All the calculator I've pluged MPH and weight into give me around 600 at the rear wheels and anywhere from 700-750 at the crank. Remeber its a b-body at 4200lb!

 

122 mph at 4200 lb is not 750 fwhp.

I ran 133 mph at 3750 lb. Do the same math and you get 680 hp. The car made 550 rwhp in this trim, nowhere near the 680 hp that's calculated.

Right now, I run 143 mph at the same 3750 lb. The same equations yield 850 hp. Once again, I'm nowhere near 850 rwhp. The car now makes 680 rwhp.

 

Denny did you retain the MAP sensor on that Fabed Intake and did they keep it in the stock location?

 

Hooked up to a vacuum port via a hose on the back of the intake. Didn't realize at first all you needed to do was connect it to a hose
and was pretty stressed trying to figure it out until my partner just pluged it into a hose.

So simple it's pathetic.

 

Thanks Denny
Been on vacation since last friday

I know this is likie advanced notice but I have the Popular Hot Rodding for October and it has a very large article on Head flow and Intake flow.

Very long and indepth.