''fast 90 to much''
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Teching In
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''fast 90 to much'' I put a ported fast 90mm intake and tb on my 99 ta.I've got long tube headers, ory, hp tuners,slp lid,free mods.would that be to much air and fuel for a stock motor.it was said to be 22 hp over ls6 intake,but this car didnt respond to it as well as my 98 ta did to the slp ls6 intake with stock tb.please help!!
Thread Starter
Teching In
Joined: Apr 2006
Posts: 18
Likes: 0
could i put my stock tb back on the 90mm intake.does it make sense that maybe im getting to much air? my 98 had better 60 ft times with all the same stuff.maybe less air and fuel flow would give me better acceleration on the lower rpm's??
Lots of air through a smaller engine and all you end up doing is slowing your velocities down. Makes for a sluggish combo. In this case bigger is not always better. People are using (I'll one of them) the 90mm tb's on 400+ ci engines.
I think your choking it, and the smaller tb isn't probably going to help much here. Might be better to go back to the ls6 for now and wait til you have more cubes.
Diclaimer: this is all coming from a newly converted small block chevy guy. All of my post would apply to a sbc but may not apply to the ls series. So take it with a grain of salt.
I think your choking it, and the smaller tb isn't probably going to help much here. Might be better to go back to the ls6 for now and wait til you have more cubes.
Diclaimer: this is all coming from a newly converted small block chevy guy. All of my post would apply to a sbc but may not apply to the ls series. So take it with a grain of salt.
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I put a ported fast 90mm intake and tb on my 99 ta.I've got long tube headers, ory, hp tuners,slp lid,free mods.would that be to much air and fuel for a stock motor.it was said to be 22 hp over ls6 intake,but this car didnt respond to it as well as my 98 ta did to the slp ls6 intake with stock tb.please help!!
22hp is with H/C in consideration, + tune
It is a better intake you just need to match it to the heads which makes the power and the cam that dictates how the power is made.
Lots of air through a smaller engine and all you end up doing is slowing your velocities down. Makes for a sluggish combo. In this case bigger is not always better. People are using (I'll one of them) the 90mm tb's on 400+ ci engines.
I think your choking it, and the smaller tb isn't probably going to help much here. Might be better to go back to the ls6 for now and wait til you have more cubes.
Diclaimer: this is all coming from a newly converted small block chevy guy. All of my post would apply to a sbc but may not apply to the ls series. So take it with a grain of salt.
I think your choking it, and the smaller tb isn't probably going to help much here. Might be better to go back to the ls6 for now and wait til you have more cubes.
Diclaimer: this is all coming from a newly converted small block chevy guy. All of my post would apply to a sbc but may not apply to the ls series. So take it with a grain of salt.
Thats why the FAST is usually last on the mod list.
This is exactly like the results I just posted yesterday:
https://ls1tech.com/forums/generation-iii-external-engine/822540-stock-head-cam-346-ls6-w-bolton-s-pre-post-fast-90-90-results.html
As a side note, my injectors (28lb ls6) were at 92%. I peeked at 380 rwhp on a MD1100. (headers, cat back, cai, 90/90 + dyno tune).
I spent 2K on my setup too (90/90 + ported).
Just start planning your cam now. It should really benefit once it's in.
Good luck, and post your results once you're done.
-Chris
https://ls1tech.com/forums/generation-iii-external-engine/822540-stock-head-cam-346-ls6-w-bolton-s-pre-post-fast-90-90-results.html
As a side note, my injectors (28lb ls6) were at 92%. I peeked at 380 rwhp on a MD1100. (headers, cat back, cai, 90/90 + dyno tune).
I spent 2K on my setup too (90/90 + ported).
Just start planning your cam now. It should really benefit once it's in.
Good luck, and post your results once you're done.
-Chris
I suppose it makes sense that it could slow down the charge velocities but it seems counter intuitive, waiting for that hyped wieand coming out in the spring. 
It's not anything like putting too big of a carb. These motors are fuel injected and don't need carb pressure signaling.
If you plan to do an intake before you do h/c, do it right the first time.
No it's not. Believe me, I have stock heads (98's in fact), cam, and exhaust manifolds. The car runs fine (even better) w/ the FAST 90/NW 90.
It's not anything like putting too big of a carb. These motors are fuel injected and don't need carb pressure signaling.
If you plan to do an intake before you do h/c, do it right the first time.
It's not anything like putting too big of a carb. These motors are fuel injected and don't need carb pressure signaling.
If you plan to do an intake before you do h/c, do it right the first time.
Its still all about velocity, and putting that manifold on a small cam small motor, you're gonna decrease intake velocity. It will drop power everywhere except a small range up top.