Poor cam results
Poor cam results Well long story short... 1999 NBM TransAm M6, Torquer V3 231/234 .643/.598 111lsa, LS6 Intake, Ported TB, PS LT, PS ORY, Cutout, SLP Lid
Car dynoed:
366.8@6200 HP DYNOJET
353.5@4700 TQ
Went to the track 2.3479 60' 13.265@ 112.84 on street tires.
After about 10 runs back to back it got really hard to shift. I let it cool down for 25 mins and went for another run and I shifted it into 3rd and there was resistance the whole time and when I pulled it out there was resistance (not just a click or tough point) the whole pull back into neutral. Think it went in between gears or bent a shift fork, I dunno. Regardless I didnt let out the clutch and it shifts fine now(this was the last run though). This is a Tick Perforamce 750hp built tranny. I am going to look into ways to insulate the clutch line.
Also I was launching at 1750 rpms and gradually releasing the clutch and still having traction problems(doing throttle blips until I got traction. Every run I got a little sideways in second. Shift light set to 6500 and I hit the rev limiter at 6700 quite a few times.
Any comments and ideas what I could run with better tires?
Car dynoed:
366.8@6200 HP DYNOJET
353.5@4700 TQ
Went to the track 2.3479 60' 13.265@ 112.84 on street tires.
After about 10 runs back to back it got really hard to shift. I let it cool down for 25 mins and went for another run and I shifted it into 3rd and there was resistance the whole time and when I pulled it out there was resistance (not just a click or tough point) the whole pull back into neutral. Think it went in between gears or bent a shift fork, I dunno. Regardless I didnt let out the clutch and it shifts fine now(this was the last run though). This is a Tick Perforamce 750hp built tranny. I am going to look into ways to insulate the clutch line.
Also I was launching at 1750 rpms and gradually releasing the clutch and still having traction problems(doing throttle blips until I got traction. Every run I got a little sideways in second. Shift light set to 6500 and I hit the rev limiter at 6700 quite a few times.
Any comments and ideas what I could run with better tires?
you should be closer to 400whp with that setup, something isnt running right, bad tune perhaps? where is your dyno chart? with current setup and 112mph trap you should be in low 12's with a decent (sub 1.8 60's) launch though.
I have upgraded to 28.8 lb injectors since my 26 were at 105% duty cycle since the tune/dyno.
https://ls1tech.com/forums/general-lsx-automobile-discussion/928623-post-dyno-track-problems-thoughts-long.html
https://ls1tech.com/forums/general-lsx-automobile-discussion/928623-post-dyno-track-problems-thoughts-long.html
I would be happy getting into 12's so I am going to keep working at that and then be done for a while.
Also it was about 90 degree and 60% humidity so I think I got a little bit of room to improve there as well.
Also it was about 90 degree and 60% humidity so I think I got a little bit of room to improve there as well.
Last edited by TCW; Jul 19, 2008 at 09:30 AM.
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Power and torque peak too late for the intake. Try advancing the cam 4 degrees. Bet you drop and tenth or two in ET.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Could it be it was ground incorrectly and thats why I would have to advance it? Instead of dot to dot like most DIY do. I can't just advance it as I don't have a degree wheel or a garage at my house... but I do have access to one.
I understand that advancing it might be the correct thing to do, but I realy dont see it as an option for me. If I do decide to do heads down the road I will do it then and invest in a degree wheel, but now its not worth it for me.
What else would I expierence from advancing it, other than peak power earlier. Would it idle differently, or anything else? More intake reversion and what not?
Thanks
I understand that advancing it might be the correct thing to do, but I realy dont see it as an option for me. If I do decide to do heads down the road I will do it then and invest in a degree wheel, but now its not worth it for me.
What else would I expierence from advancing it, other than peak power earlier. Would it idle differently, or anything else? More intake reversion and what not?
Thanks
....I wish there was less useless post like this and more helpful post like PatrickG's and the others that responded to this thread. Telling people they just need to learn how to drive their car isn't helpful.
Last edited by TCW; Jul 27, 2008 at 03:05 PM.
i would look at some bigger injectors, at least 36# - and another tuner, as well. no tuner should've let your car out the door with 105% idc.
i'd guess with a decent tire on the car you could go about a second quicker in the 1/4 with that mph. i would expect the mph to increase with traction, as well.
i'd guess with a decent tire on the car you could go about a second quicker in the 1/4 with that mph. i would expect the mph to increase with traction, as well.
i got a 98 z with torquer v3. With that and a set of patriot ls1 heads, ls6 intake 4400stall and 4.10 gear and untuned best ive run is 11.55@116mph with a race weight of 3330#.
something is seriously wrong w/your cam/engine. my stock ls1 (01') with headers/exhaust is getting me 354/367 and last night in the heat, got me 4 12.9 and better passes. Like someone said, you should be near 400... Good luck
