I can't read the graph too well on my phone.. What did it put down? Also, do you think the stock injectors were holding back some potential? I assume you got it tuned? Auto or 6 speed?
__________________ 2002 Pontiac Trans Am Firehawk
225/231 (.609/.604) Cam | Hooker LT Headers | Magnaflow Cats | Corsa Exhaust
SLP STB | Ported TB | ASP UD Pulley | EFI Live Tuned
389rwhp/371rwtq - | Sheet
Great numbers! The torque is what's so appealing, but overall good smooth curve. You guys have one hell of a combo going there! Hopefully we can avoid any dyno sheet controversies on this one!
I can't read the graph too well on my phone.. What did it put down? Also, do you think the stock injectors were holding back some potential? I assume you got it tuned? Auto or 6 speed?
I assume it's a 6sp, and the numbers were 445hp/410tq.
Also curious to the injector question as well as the stock FP as there wasn't an AF reading on the bottom of graph. My setup (GTP stg 2+/torqer 2) was leaning out on the dyno @ 5500+ (killed pulls at 13.5-13.8:1 AF) so I assume the DC on injectors was maxed and FP was struggling, but who knows.
what intake setup was on this????was it stock or fast??
LS6 intake.
Quote:
Originally Posted by YOUNG
Jason, I have three questions for you.
1. Did you have to fly cut the pistons to run those heads?
2. what type of numbers does the MS3 put down with a set of BOX STOCK
L92 heads?
3. What was the compression ratio on this combo.
No flycutting. We haven't tested the L92's with the MS3 due to no piston to valve clearance. Most people at that point go with more cubes since the majority are buying new rods and pistons and paying for machine work anyway. There are surprisingly few people out there who will flycut their own pistons. This one was right at 10.8:1 static.
Quote:
Originally Posted by TransAm2002
What was the LSA on the cam?
It is a 112LSA.
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No flycutting. We haven't tested the L92's with the MS3 due to no piston to valve clearance. Most people at that point go with more cubes since the majority are buying new rods and pistons and paying for machine work anyway. There are surprisingly few people out there who will flycut their own pistons. This one was right at 10.8:1 static.
What would be the highest compression ratio you could get me with these heads and MS3 on my LQ4? How much different would the power numbers be versus my LQ4 to this LS1?
sorry to dig up an old thread, but i just started looking at these 5.3L stage 2.5 heads from texas speed... The price is just so appealing. My mods are almost identical, except i have the g5x3 instead of the ms3... what were the numbers BEFORE teh heads with those parts? Just looking to find out how much you gained from just the heads. Thanks.
sorry to dig up an old thread, but i just started looking at these 5.3L stage 2.5 heads from texas speed... The price is just so appealing. My mods are almost identical, except i have the g5x3 instead of the ms3... what were the numbers BEFORE teh heads with those parts? Just looking to find out how much you gained from just the heads. Thanks.
Those are popular heads. You could try a search. I am not a rep for TSP but those heads are usually good for 30rwhp with good power under the curve also.
Those are popular heads. You could try a search. I am not a rep for TSP but those heads are usually good for 30rwhp with good power under the curve also.
Are there any Texas speed reps who could give me some advice? My tuner is telling me I can safely estimate 470rwhp if I bought AFR 205s, combined with my new FAST 92/92 with my g5x3. How much do you think I could get with the same combo with those 2.5 PRC heads?
Are there any Texas speed reps who could give me some advice? My tuner is telling me I can safely estimate 470rwhp if I bought AFR 205s, combined with my new FAST 92/92 with my g5x3. How much do you think I could get with the same combo with those 2.5 PRC heads?
470 has been reached by LGM on that combo. Perhaps contacting them to duplicate setup would be a good thing. It is not given if you just slap it together that it will make those numbers. It has to be done a certain way with certain parts.
Are there any Texas speed reps who could give me some advice? My tuner is telling me I can safely estimate 470rwhp if I bought AFR 205s, combined with my new FAST 92/92 with my g5x3. How much do you think I could get with the same combo with those 2.5 PRC heads?
2 years ago I did 488 rwhp / 428 rwtq on the G5X3 and PRC 2.5 5.3 heads. Had to flycut, and had the heads milled a little more. This was with a fast 90/90, u/d pulley, ewp, pace longs and ofy.
2 years ago I did 488 rwhp / 428 rwtq on the G5X3 and PRC 2.5 5.3 heads. Had to flycut, and had the heads milled a little more. This was with a fast 90/90, u/d pulley, ewp, pace longs and ofy.
I have basically the same things. u/d pulley, LT's, ORY, Fast92/92. Also, I spoke with my tuner again, and he said the big difference other than peak numbers is the area under the curve (between the PRC 2.5 and the AFR 205 out of the box).
I have basically the same things. u/d pulley, LT's, ORY, Fast92/92. Also, I spoke with my tuner again, and he said the big difference other than peak numbers is the area under the curve (between the PRC 2.5 and the AFR 205 out of the box).
your in dayton right? Who is your tuner? I'm may buy new heads and sell my TSP stage 2.5 5.3 heads..Maybe we can work something out
PRC Stage 2.5 5.3l Heads & MS3 Dyno Results 
Hopefully we can avoid any dyno sheet controversies on this one!
