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Old Jun 24, 2010 | 12:32 PM
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Default Intake or Heads

I've got a 02 WS6 M6, Bolt ons, and Torquer 2 cam. The car still has the stock TB and MAF sensor. What would I benefit most from a FAST intake or a set of TSP LS6 Heads? I also have a 00 Z28 I could use my LS6 intake on if I went that route. Just something to take into consideration.
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Old Jun 24, 2010 | 12:34 PM
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Heads, without a doubt, I picked up 25 across the entire range with untouched 799 heads.
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Old Jun 24, 2010 | 12:36 PM
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Yeah man honestly that cam would love the hell outta some good heads from texas speed for sure an you could have them bumped up for some more compression to.

IMO the fast 92/92 would only be used on a 347 cube if anything, but other than that i was stray away from that really... All of the fast postings on the new 107 is junk to me unless your 427 cube+ or power adder car.
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Old Jun 24, 2010 | 12:44 PM
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Would changing the MAF and TB be worth messing with or just wait until I did decide to do the intake? I'm on a mail order tune now, wanted to wait until I got everything finished before I had it dyno tuned.
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Old Jun 24, 2010 | 01:01 PM
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do the heads, your car has the ls6 intake so a fast isn't going to help you nearly as much

some worked over 243 should give you 25-30rwhp or more...a fast intake maybe 15 and mostly up top

port the stock tb, leave the MAF alone
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Old Jun 24, 2010 | 01:03 PM
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Another vote for heads. A FAST should be your next to last bolt-on, before an electric water pump IMO.
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Old Jun 24, 2010 | 01:43 PM
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i added heads first. then a FAST and NW TB later on.
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Old Jun 24, 2010 | 01:48 PM
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I got a good deal on my fast and still wish I would have spent that money on heads...it looks nice now that its painted (stock gray looks like ****) and it was an improvement over the ls1 junk intake, but I would have been much better off with heads
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Old Jun 24, 2010 | 02:10 PM
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Originally Posted by LSWNDR
Yeah man honestly that cam would love the hell outta some good heads from texas speed for sure an you could have them bumped up for some more compression to.

IMO the fast 92/92 would only be used on a 347 cube if anything, but other than that i was stray away from that really... All of the fast postings on the new 107 is junk to me unless your 427 cube+ or power adder car.
A builder in Mass is having issues with a 102 on a 427. With a mouth that big, it's basically an on/off switch. He's having trouble with the idle and other things. I don't remember what exactly.

I really wish FAST didn't discontinue the other intakes.. Hard to find now.

Last edited by bayer-z28; Jun 24, 2010 at 02:43 PM.
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Old Jun 24, 2010 | 02:42 PM
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Thought they still made 102's for those...? I know they make 102's for the cathedral ports.
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Old Jun 24, 2010 | 02:44 PM
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^ the 102 was designed for the 427 and larger engines. No idea why they made it available for the cathedral port heads as those are typically LS1/6 and early 2005 LS2's.
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Old Jun 24, 2010 | 02:56 PM
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Yea, but now its all you can get, unless you buy used. Bummer huh.
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Old Jun 24, 2010 | 03:36 PM
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You would THINK they could figure it out that there is still a LARGE market for the 90's and 92's.. I'm hoping they figure it out and go back to marketing the 90's intakes. Even though the LS1's are getting to be old tech now... 13 years later!!
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