Jason , I have your complete 402 with the PRC stage 3 heads and your texas giant camshaft. I also have the Harrop Intake.

I am thnking of selling the Harrop intake and the heads and going with the L92 stuff with the L76 intake .

I made 540 rwhp now . Do you think I can make more HP ? If so how much more?

What can you guys offer me ???

What do you have to offer to make my engine complete if I remove everything? I dont want much down time, tell me what will work , if nothing yet tell me to wait !

 

sounds like you should give them a call

 

Sounds easier than you think , Have you ever tried to get Jason on the phone??? or get him to answer a email ???

 

I have gotten him everytime except twice. He stays busy as hell though, I had to wait about 10mins today on hold... He loves that damn speakerphone too.

 

I wont go into why I dont think he will get on the phone when I call but I HOPE HE RESPONDS THIS TIME

 

You have one of the baddest *** intakes on the market and you want to sell it? Why not just sell the heads and get a set of ET240's? No way would I swap to L92/L76 if I already had a Harrop, which I do.....

 

well thanks but , I am having some tunning issues. I am getting tired of dealing with it

 

what are the tuning issues?

 

Yes, please elaborate. Are there no good tuners in your area?

 

if you go with the L92 setup you will have to prolly change out your pistons and the entire valvetrain to see the results you want.

 

I'll buy ya the heads and intake for the harrop....

 

cold start is horrible, and there is spot under normal driving where it gets burbly . I honestly have not put in the time required to tunning this intake . It not very easy ya know. No mass air meter makes it difficult

 

No maf makes it even easier. FWIW I would run a different cam than the TX giant. The harrop seems to tolerate extremely tight lsa's pretty easily. Something in the 106 lsa region would be killer on your motor.

Don't sell your harrop. It's probably the baddest intake on the market for our junk and going back to a composite manifold will just worsen your tuning woes.

Nate

 

Well today I almost sold the car but didnt. so something HAS to change now . I am thinking of changing the heads and cam like some have said but this tunning is taking to much time and money

 

Get a reputable tuner that can really do SD tuning and have them go at it. There should be plenty of tuners in the NE that can get you taken care of. Hell try finding a tuner in WA. There is nobody here that can SD tune.

 

datsbad do you have a airbox or filters on this intake? I am going to say yes because I found cars with the same cam and heads fast 90 that made only 40hp less. I see you made a post about air fuel ratio. What is yours? What compression is your motor?

 

LS1408 , I have twin filters on this intake with custom air tubes going out to each fender well. It was tuned in the 12.5 range and the compression is 11:1

 

I'd be interested in seeing the under hood portion of your air box design. Trying to look at all avalible options at the moment. If you have a pic, or could take one, it would be appreciated.

As for your tuning. It really sounds like you need to find someone reputable. As Nate said, try venturing out from your area some. There should deffinatlly be someone up there who can get you lined out.

 

or try taking the filters off to see if there is any power difference you might be choking it. Do you have a dyno graph you could post.