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Your opinion on FAST 78 or 90/90 w/ my set up?

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Old 03-24-2006, 01:40 PM
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Default Your opinion on FAST 78 or 90/90 w/ my set up?

Considering this for my daily driven 2000 Z28..
Here are my current mod's...

LS6 heads
232 236 595 601 114
LS6 intake
Ford SVO 30lb injectors
PP Throttle body
Long tubes
true duals
pulley
clear lid
Yank 3500 stall

Should i stick with my LS6 set up? Or, upgrade...
Car is not a track car... occasional hwy runs..

Thanks...
Old 03-24-2006, 01:42 PM
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The FAST 78mm manifold will give you 0 rwhp gain over the LS6 manfold. The FAST 90/90 can give you 15-20 rwhp more.
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Old 03-24-2006, 02:09 PM
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it depends if u want more top end or low end power, if u want more top end go with 90/90, but judging by your setup and the A4 and stall u want more low end, if thats what u want stay with the LS6.
Old 03-24-2006, 04:04 PM
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Originally Posted by ls1charged
it depends if u want more top end or low end power, if u want more top end go with 90/90, but judging by your setup and the A4 and stall u want more low end, if thats what u want stay with the LS6.

Thats what i need to know..
Thanks...
Old 03-24-2006, 04:44 PM
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If you're running a 3500 stall converter, you'll never see low end at WOT. Check out this dyno of my car a while back. The lower dyno is when it had a CheaTR cam stock manifolds and LS6 intake with ported TB. The higher dyno is with the addition of a ported FAST 90mm intake with a NW 90mm TB.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
Old 03-25-2006, 07:51 AM
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Here is my current Dyno w/o the LS6 heads installed through my 3500 stalled A4... Not too shabby..
[IMG][/IMG]

I'd imagine another 15-20HP for the heads... & even moreso with the 90/90..
What say you?

388.7hp...
Old 03-25-2006, 07:36 PM
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the 90 will at least be there for future cubes




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