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Couldn't find anything with search. My Vengeance Racing ported 90mm developed a leak and I repl with new FAST 102 as I didn't want to wait on getting old one repaired. When repaired, will the ported 90mm be better for my stroked LS2 than non ported 102? Mods are in signature. Here is my dyno sheet with ported FAST:
I would suspect it will be pretty close. The only difference between the FAST 90mm and FAST 92mm is the inlet size, which Vengeance probably took care of when they ported it. I assume they ported the inlet out to 92mm, but could be wrong. You may see 5 rwhp more out of the FAST 102mm, but I wouldn't expect much more.
I'd agree w/ phoenix but it would have been cool to have another pull on the dyno. What is the graph you posted showing? The stock LS2 vs. the ported 90?
Graph shows my old 402 with ported 90mm FAST with MS3 cam. Latest run show my new 402 with custom cam and ported 90mm FAST. Don't have one with just stock 102 yet. Will try to get one next time they have it.
Graph shows my old 402 with ported 90mm FAST with MS3 cam. Latest run show my new 402 with custom cam and ported 90mm FAST. Don't have one with just stock 102 yet. Will try to get one next time they have it.
From what I've read a good 90MM TB will flow 1300CFM+, naturally aspirated, and 102MM TB 1500CFM+
I think the two intakes will be within a few peak hp of each other. The 90 mm will probably be easier to dial in tuning and may drive better. Since the 90 was ported it might match up to the cylinder heads a little better than the unported 102. The ported 90 may make an extra hp or two.
Sounds like you didn't want to wait for the 90 to be repaired, so you put a new 102
on, did I understand that correct? If so are you driving it with the 102, and if so, can
you tell a difference?
12-19-2016, 03:41 PM
Ported FAST 90 vs non port Fast 102 questions 
