What size is intercooler? Imho any boosted v8 needs minimum a 4" core

 

Measured dynamic airmass stays between 1.45-1.50 g/cyl throughout the run. Not sure how drastic of a change in delivered engine torque I'd be looking for, but is right around 560ftlbs after the 1->2 or 2->3 shift, and tapers off to 510 ftlbs when I up shift.

HPT Log and config attached if anyone would care to take a look. Havent gone to the 3.0 scanner yet...

 

Atomic and George:

Its a 3" intercooler - the older trick stage 2 intercooler I believe, which was already going to be a future upgrade.

It would be interesting to see the pressure drop across the intercooler too - if its excessive it'd be causing IATs to be higher than they should be...

This is awesome! I have starting points to at least start diagnosing.

 

My old 3.5 was huge restriction for my old twin setup...went from12.5 to 18 and didnt gain nothing really in et or mph

Intercooler became my issue

 

Put a good turbo one it, and you will see a huge gain.

you're current turbo is out of steam

 

turbo might be out steam /with the intake that start making power at 4000k as for as down pipe an intercooler .i have same intercooler and same 3 inch down pipe with a bigger motor and can go well in the 6"s in the 1/8 mile and have 10'sec 1/4 mile .if want better 1/8 mile ,stock intake .gear 373-390 and let jamie tune ,look at my truck and jason (fastweb) tuned by jamie

 

Tim, Jason has copies of my tune from jamie, we are all buddies lol. Jason has logged my truck during passes, so he has access to that too. Our cams are real close, I run 3.90s, he runs 4.10s, not much diff in weight. Main differance is I run stock intake, dual valve springs and have a 70mm. He runs high ram, singles, and a 76mm. His truck on 14 psi, is barely faster then mine was on 10.5-11 psi. I'm sure the intake hurts him down low. But he should have picked up top with more boost. We all are kind of wtf on this one.

 

My 2 cents, that turbine is KILLING you. I bet back pressure is sky high. Where are you shifting it now? Short shift it, 200, 400, even 600 or more RPM sooner and I'll bet you pick up ET.

 

Alright... im not a turbo guy so I'm a little slow. But what size is the turbine? I asked but I dont think it was ever posted? Or am I just being really dense right now?

 

change valve springs

change the intake .if it dont speed up i will EAT IT WITH OUT NOTHING TO DRINK LOL THAt intake on a 4.8 is just to much. i am no guru on turbo but i had more bad issue than most .talk to a lot of ls engine builders and built a few .that holley is for big cube 400+ cube not 293/323.