Originally Posted by Split

The heads are used, i bought them off of a guy that had them sent to Lloyd for porting. Thanks i am content with the numbers, for now. As you can see from the graph it flatens off up top, but never drops off. I feel that something is restricing the air flow into the motor, because it acts like it cant make any more power. If it made peak power it would fall off afterwards, looking at the graph it doesn't. I am going back and rechecking my work, it has to be something small.

I dont have the flow numbers the guy i bought them from has them still. I how straight from Lloyd that they are his heads from a year and a half ago. The motor they came off of had a piston let go, resulting in a pitted head surface. I had to have the heads milled more than i wanted to clean them up.

Originally Posted by 1SlowFormula

How much meat was removed? What is your final static compression ratio after the mill work?

Thanks,

Originally Posted by Jeremy95TA

Thats amazing that he's making that kind of power off of LE1 heads and the LE2 cam with a stock displacement.

I wonder what a full LE3 setup with a 396 would get on a 6 speed. I am seriously considering doing that when I mod up.

Originally Posted by SStrokerAce

The cubes are actually a detriment to making HP up high.... cubes make TQ but to make more HP with them you need more head than a LT1 casting can give you.

IMHO the best setup is a 355 with a LE3 setup, that's going to get you the best bang for the buck.

FWIW, the new LE1 heads move more air from .400" lift up, the milling you did to the heads could have caused that since it might have gotten into the intake valve seat.

Guys don't worry about the setups being outdated, these are only small changes that have happened lately to the cams, nothing your going to really notice much, but I keep tweaking the cams and lloyd keeps getting better at the heads.

Bret

Originally Posted by SStrokerAce

IMHO the best setup is a 355 with a LE3 setup, that's going to get you the best bang for the buck.

Originally Posted by Jon A

Now there's an idea!

Originally Posted by Split

Just got back from the dyno

PCm for less tune for LE setups

392 rwhp
371 rwtq


Joe Young (Kryckter) tune
403rwhp
383rwtq

Picked up 12 ft .lb accross the entire rpm range !!!! Thanks Joe for the dyno tune, money well spent.

The car made 398hp at 5600rpm , at 6500 it made 403hp. Something is holding it back on the top end, the car never fell off of the top end. The hp just stayed flat like something was restricting it from making any more. But i was still pleased with the numbers, the torque was really high, for the hp so i know it could put down more if i can get the setup up dialed in. I think 415rwhp is doable.

Thanks Bret for the awesome cam, Joe for the tune, and Lloyd for the heads.

Dyno graph

Flow Numbers
LIFT Intake Exhaust
0.0500 36.6 24.3
0.1000 69.2 48.1
0.1500 99.1 72.5
0.2000 135.2 94.8
0.2500 163.9 115.4
0.3000 191.1 130.5
0.3500 211.2 143.5
0.4000 229.9 153.7
0.4500 239.8 162.6
0.5000 249.3 168.9
0.5500 252.2 173.8
0.6000 258.2 177.7
0.6500 259.2 180.2
0.7000 259.5 181.1

Originally Posted by Jeremy95TA

Well ideally I'd like 11.7's (or better) on motor and possibly even 10's on spray. Is this possible with a 355? I know that with more cubes a car is 'more streetable' if you will. The reason I'd like to know numbers is just for a baseline. I know that 415ish rwhp will net you 11's if you can drive and have your suspention which I am working on right now. Suspension before mods for me Would a 383 be more ideal? (sorry for the hijack)

Originally Posted by 93camaroLT1

what valve springs and retainers are you running on your LE 1 heads? I was under the impression that you couldn't go over 6200-6300 rpm safely with the LE 1 cam, definetly didn't think you could go to 6500 rpm with a cam even bigger than the LE 1 cam? kinda interested in this, I wouldn't mind running a bigger cam on my LE 1 heads.

Originally Posted by Jeremy95TA

Well ideally I'd like 11.7's (or better) on motor and possibly even 10's on spray. Is this possible with a 355? I know that with more cubes a car is 'more streetable' if you will. The reason I'd like to know numbers is just for a baseline. I know that 415ish rwhp will net you 11's if you can drive and have your suspention which I am working on right now. Suspension before mods for me Would a 383 be more ideal? (sorry for the hijack)