F.A.S.T. v. SLP LS6 Intake Manifold?
05-11-2005, 11:56 PM
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F.A.S.T. v. SLP LS6 Intake Manifold? What would be better for my application? I have long term goals for my car (402 Stroker, AFR Heads, 224/224 Cam 114 LSA, Possibly Supercharger also), but my short term goals are to have a quick daily driver. I have full exhaust (BBK 1 3/4 shorties, high flow cats and TSP Rumbler exhaust) and intake mods (BGRA, FRA, K&N filter, SLP lid, descreened MAF) and that is it for power mods. I want to get a new cam and valvetrain very soon, but am contemplating getting an intake manifold first. The reason is that everyone has said it will be a bottleneck because I don't have an LS6 manifold (it's a 99). I will probably need a TB soon as well, which would be NECESSARY if I got the F.A.S.T. manifold, so my question is this:
"What should be my next mod to my intake system?"
SLP makes an LS6 mainfold with EGR and AIR hookups, right? So should I go with this or with the F.A.S.T. for a lot more money? I am in a dilemma because I don't know what my next mod should be. Any suggestions?
"What should be my next mod to my intake system?"
SLP makes an LS6 mainfold with EGR and AIR hookups, right? So should I go with this or with the F.A.S.T. for a lot more money? I am in a dilemma because I don't know what my next mod should be. Any suggestions?
05-12-2005, 07:00 PM
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Okay, so if I go with the FAST, do I get the 90mm now, because I will probably be a 346ci for quite some time. Will it be too big for a stock displacemnt motor? How about a 346 w/ AFR heads?
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05-14-2005, 08:09 AM
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This is really a no brainer, I gained 27 rwhp & 13 rwtq with my 90mm FAST intake & 90 TPIS TB over my LS6 intake and ported TB. Dyno's were done on the same dyno which was a Mustang dyno. 
This is all on a stock 346 bottom end and stage 2 Absolute Speed heads and a mild B1 cam 221/221-.559/.559 with a 114 lsa.
This is all on a stock 346 bottom end and stage 2 Absolute Speed heads and a mild B1 cam 221/221-.559/.559 with a 114 lsa.
05-14-2005, 10:16 AM
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Originally Posted by smokin' joe 00 ss
This is really a no brainer, I gained 27 rwhp & 13 rwtq with my 90mm FAST intake & 90 TPIS TB over my LS6 intake and ported TB. Dyno's were done on the same dyno which was a Mustang dyno. This is all on a stock 346 bottom end and stage 2 Absolute Speed heads and a mild B1 cam 221/221-.559/.559 with a 114 lsa.
This is all on a stock 346 bottom end and stage 2 Absolute Speed heads and a mild B1 cam 221/221-.559/.559 with a 114 lsa.