Fast 90/90 or 73?

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May 24, 2007 | 02:31 PM

Shamson5.7

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From: Denver

Fast 90/90 or 73?

Just curious what peoples thoughts are on the setup. All I plan to do is have a moderate to slightly aggressive cam sometime in the future and Im not sure which setup I need to go with. Currently have TDs and headers so Id like to get all the air flowing before a cam. Would a 90/90 suit me fine or do I need smaller like a 73? I plan to get a FAST no matter what the case.

May 24, 2007 | 02:48 PM

LS69TA

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From: Texarkana, Tx

Might as well go with the 90/90 if you're gonna do it.

May 24, 2007 | 03:12 PM

Eurospec2

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From: Jacksonville Florida

Intake

Dont waste your money on either, if your only going mild upgrade to a LS6 intake for 1/4 of the price, and save that cash for something else. You wont see much gains with the fast vs LS6 unless you go big

May 24, 2007 | 03:18 PM

Shamson5.7

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From: Denver

^^ How big? Also what size TB pairs up well with LS6?

May 24, 2007 | 03:26 PM

Bo White

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From: Vance, Alabama

The TB you already have but ported. The 90/90 stuff is best when going max effort. Just get ya a LS6 intake and have your TB ported.

May 24, 2007 | 03:34 PM

Shamson5.7

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From: Denver

Alrighty...definately is cheaper. Can you get the LS6 ported or no? Dont really know of any shops in town that do port jobs. Is there somewhere i can get a TB/LS6 already ported and send back the cores?

*Edit* Noticed you do port jobs. Do you sell TBs or would I need to send in the core first?

May 25, 2007 | 09:25 AM

radkon

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From: Cleveland, Oh

The FAST comes in 2 sizes 78 MM or 90.

IMO, if you aren't doing heads don't waste your money on either. Get an LS6 intake (about $300) and be done with it. The LS6 takes a 78 MM TB. Many shops port the LS6 but the gains from that are minimal.