Guys i need some help!I just got everything i think up to par to run in the 12's.I'll give the long side of the story so you guys can help.I rebuilt a 97 lt1 for my 95'.Added the hotcam,hd timing chain,melling hv oil pimp, canton 7qt oilpan,1.6rr,home ported exhaust stock heads,lt hookers,exhaust cutouts,eletric water pump,moroso cold air,granitteli maf,ovc talor wires,tune by madz28.Thats in the motor.

Stage 2 spec clutch,adj lower control arms,adj panhard,reloction brackets,stock 3.42s in the rear.

I have a scan master and a maf translator but i cant seem to get this setup even to the 13.20s that i ran on the old motor with just the cam and headers.

I ran a best of 13.43@104 60ft 2.0 on nittos last week.then i snaped the drive shaft.So the steel stock ones going back in.

So if you have any ideas or hints on how to help.

 

altitude? temps?

 

Well, it's a situation where you have minimal mods to increase power to guarantee 12s, unless your 60s are really great and everything is working.

A cam w/ 1.6 RRs and headers might be good enough, however I see that you have stuff like MAF translator, etc. With a CA filter, the cam and rrs along with the headers (assuming that the rest of your exhaust is also free flowing) and good valve springs should get you there assuming that all things are working together.

I think that you should get rid of MAF translators, etc and rely on a good basic tune based on your cam.

Remember that a completely stock lt1 usually won't even break 14 so your numbers look pretty good to me given what you are working with.

More "stuff" especially things that don't increase HP/TQ aren't going to do you much good. JMHO

 

I assume you mean a stock LT1 won't usually break into the 13's.. which is usually the case, yes.

IMO he has enough parts in the car to break mid 12's... as have others, I went almost high 11's with just a cam.

 

I was running at around 5K feet the air was at 6k the air temp was 87 humi was at 8 percent.

Also at that time i wasnt running the translator ion ask that i didnt to get the best out of the tune.I have upgraded the springs and the exhust has cutout in the y-pipe.

 

Ouch, 6k elevation? Daaaamn.

Try correcting those #'s to sea level and see what ya get. Sounds like all you really added to your old setup that actually adds power is the water pump and did you home port your heads?

Varying conditions can cause the loss you're seeing.

I run at sea level and my best times are usually in -DA, so it's hard to judge.

 

104mph is not great. There is something left on the table for sure.

 

Translate that MPH into sea level type conditions and it probably looks more like 109 if you ask me...

 

I take it you were running here in albuquerque? With those mods, i'd say you were pulling pretty decient times for here. I'd bag the translator too and don't know if id stick that stock steel shaft back in. Always though they were garb. Get a nice aluminum or a steel from Denny's Driveshaft. Next time your in Albuquerque, give Chris a call at the Dyno Edge and see if he can get you in to make a pull or 2 on the dyno. That will tell you what kind of A/F's your running and what kind of HP/TQ your putting to the wheels. It may be helpful.

Ken R.

 

He was running 13.2 @ 109 on his old motor with less mods. There is something amiss.

 

i have 394 rwhp and can't get into the 12's ,i went 13.01 at 112, i also have nitto's. can't get below 2.1 60ft time.

 

Just so you all know I have several friends that were putting down 340-350 RWHP and running 12.3-12.5 @ 108-110. I think the problem is that you aren't at sea level. But thats just my 2 cents. Try going to a climate controled dyno and see what you put down. I bet you'll put down around 335-345 rwhp. I think you have the power, just not the climate.

 

I think the three things I highlighted are conflicting, the ONLY one I would keep would be the Mad Tune, the other two are halfassed and only severe to make his job harder.

 

I wasnt running the translator on these runs.I'm stuck with the maf (i sold the stock maf).

So maybe i hurt my self opening up the exhust side of the heads.because with stock I was in the 13.20s no problem (at roswell) now at the same track I cant seem to even get back to that time.

I do have the stock heads off the 97 block that i build.I ported the 95'.So if i put those back on maybe?

The point is i want the fastest time i can out of this setup.after i get in the 12s then its time for the power adders or a strocker.

But if i cant get the times i want out of this setup and find whats a miss then adding more stuff might not get the best of then either.

 

Well did you have the heads flowed after you did the port work? I'm willing to bet you might have hurt flow. There is something wrong and you need to find out what it is. Do you have any logging software?