SSlow 4.8

iTrader: (4)

No I dont think its holding me back, I just dont think its helping THIS motor like I thought it should/could/would... I have what the old graph looks like in my head, not like that helps any of you all, But when I see the new graph i'll be able to tell, idk when im going to the dyno.

From driving it, I can tell one thing... bottom end is here to stay, holy crap, lol. If I had to guess right now... tq comes in earlier and flattens out but probably isnt much more, id say maybe gained about 10 ft lbs. If the 2-3 tenths is right according to DA correction, that'd mean I gained between 30-40rwhp. But i'll just have to get on the dyno and see.

We have a track that is closer and better than silver dollar, i just went there because it was my forum's track day and it was on a sunday (i work mon-saturday usually). I might go to the closer track on a nice cool night. According to a DA calc, a good negative or sea level day would be between 40-45*F, 30-40% humdity, and 30+ Barometric Pressure. Idk how many of those days are left this time of year.. might not be till oct or nov before I can run in weather like my previous best was.

60' at best was 1.86 spinning a tad. Track went away quick, they had an event the day before, didnt re-prep and we were running on the day before's prep. Which held up for a whole 10 passes, lol.

BlackGMC

iTrader: (31)

I would like to see some logs before and after... Mainly i would like to see how your grams/cycl changed...

SSlow 4.8

iTrader: (4)

Im in the .62-.66 range now.. I need to find an old log, one sec. If I find a new and old, i'll send you both.

dug

iTrader: (10)

i wonder how much of the gains are from the heads vs. intake.

Look for a bigger cam on ls1tech. You can usually find one for couple hundred bux

SSlow 4.8

iTrader: (4)

I think the heads more than the intake helped, but we'll never know really. Stupid on my part, but its whatever.

I'm going to have the guy that did my head work spec one out for me and go from there.

BlackGMC

iTrader: (31)

This is just my opinion.... From you PM your grams/cyl went down with the swap. Combine that with your 11.5 AFR. This would leave me to believe that your tune is off like you mentioned. You did not mention what your timing was doing... So depending on how your tune is set up your could have been commanding the wrong timing... Thus causing you to go slower by commanding too much or too little timing.. I am not sure what tuning software you use but post up a log..


I would not give up on it yet, it took me awhile to dial in my truck and i got tired of messing with it. you just got to play with different AFRs and timing threw out the rpm range and in each gear...

acethedragon

iTrader: (2)

agreed. keep playing with the tune. get that thing on a dyno. if you can figure out whats causing it to richen up, then it should fly on top. and dont worry bout the one idiot that said you would lose torque. he keeps beating that same horse to death. doesnt matter that tunnel rams are built for more average torque by making the heads seem better than they are by a ram effect. another test on a h/c tbss gained 30hp and no loss of torque, so proper tuning this manifold shows incredible gains.

SSlow 4.8

iTrader: (4)

Thanks guys...

Heres some logs. First one here is with only 27* of timing. The first run was a 13.5@97 1.9 60ft. I went up a degree in timing and it went 13.4@98 1.9 60ft. Upped timing again it went 13.3@99. Upped it to 29* and it went 13.2@99 w/ 1.9 60ft. I didn't go past that, should have kept going up. I do notice in the logs that as I went up slightly on timing each run that the g/cyl like you mentioned did in fact go up slightly, you'll see in the logs from the lower timing run to the higher one.