Thanks for your feedback.

I've been eyeing the fast 102 with the race runners thinking it may RPM a bit better, but I don't shift my car very high. It's just a bracket car, but I'd be a liar if I said I didn't like making my car faster lol.

 

I have mid length runners in mine. You'll have to turn some serious rpms to the race runners.

 

ZZ has something like a 402ci engine so the FAST pairs better. I had a rod mod intake on my 5th gen which works well for stock cubes.

ZZ shooting for 800-1000 on the shifts?

 

Always impressed by your built. That LS2 Baddd 💪. I would have to do weight reduction and put A/C back 🤩.

 

It would drop back to 6000 with the LS2 in it which was a 1000 on the shifts . It seemed to be perfect for it. I changed to this 4.06 and upset my combo . The torque sure did change the converter. As you know everything has to work together. I'll get it sorted out . I like trying different things to see how it works out.

 

Thanks Brother, I've switched to a 406. Fastest I went with the LS2 was 10.24 . I was hoping it would run 9s just by swapping in the 406 but it hasn't yet. The faster you go the harder it is to go faster. I'm sure in perfect weather conditions with some -DA it would but I want it to run 9s consistently.

 

Seems like you may need to have the converter tweaked again

 

The pt4000 cannot be tightened up only made looser. It is my preferred converter. It is more efficient, will mph more . Easier to hook on no prep surfaces. I'm going to try the solid roller cam. Run it with the ss4000 before I switch back to the pt4000.

 

My buddy switched to a solid roller and his combo didn't really pick up. Maybe the solid roller wasn't enough of a step up.

Stock seats in the car?

I'm surprised you are only running 28 timing on E85, whats the compression of the engine?

 

It didn't like any more timing. Around 11.9 compression. All factory interior/ seats. My idea is that the power carries farther if it don't make anymore. I'm losing 30+ HP now from peak where I'm turning it to.

 

Playing with shift points vs power curve

Not tempted to round up a Kirkey or other drag seat and make some runs with just that seat in the car? 10.04... so close

 

I'm having to shift it higher now to make it through the 1/4 in 3rd because of the stall. I'm sure I could squeeze out a hero pass but I want to run 9s every pass in street trim like I drive it to the track. Sometimes my wife and daughter go. We all ride in the car with laptop ,cooler and other things they like to bring.

 

Gotcha!!

Back in the early bolt-on days ~2000, we had a group of 6 of us pushing, we'd go to the track and pull out the passenger seat, many of us had the rear seat out so we could fit another set of wheels. We tried hard for 11.99 SI, I got to about 12.2.

Surprised the engine wouldn't take more timing on E85. My LS3 combo we tried up to 31 timing and left it at 30 for track runs and I changed it back to 28 for the street.

 

I seen some love e85 and some not make any difference at all. I've seen some make more of a difference than that should.
You just never know. I'm curious what this cam swap will do. May make no difference and may be a different car. You never know until you do it.

 

Yeah E85 works well in NA with high compression. Buddy had a 408 ~12:1 and it picked up over 30rwhp with E85.

The testing on <10:1 compression NA engines that I saw basically showed no real gain.

If you go 10.02 or something please pull the pass seat if the car has leather lol.

 

Whe have tuned several n/a cars on e85 and I have never seen one pick up that much. Usual see 10-15 at most through the curve and not much peak.

 

We are doing a similar build with my wife's T/a, this is her last season on the ole H/C ls1 with her PT4400 combo. I also wonder if that converter will be too loose for the new combo. We are having JAC build a 13-1 compression 416 short block and going to run it on E85. I am unsure how that converter will work in the new combo. We will be at Rockingham in April for a race. She has been 10.31@129mph with a 1.34 60FT. Been following your builds and posts. I was thinking she might need to switch the SS converter, but we have to test and find out.

 

My converter changed going from the Ls1 to the LS2 and changed even more going from the LS2 to the 406. You will be in the same boat I'm in with the converter. That's why I posted my results between the 2 converters. I still think mine will be faster with the PT.

 

Good luck zz, hope you get that 9.99!

 

Thanks John, cam swap under way, push rods ordered. Going to try a solid roller. I sure hope it runs faster than 9.99 😂.