TSP 383 dynoed today at RPM in NC
08-03-2016, 11:10 PM
#21
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Okay, so I've priced a fast 92 and 92 to after listening to people say how much power I'm leaving on the table with the ls6 intake. Before I really think about this id like to know how much 383 guys have gained going to a 92. A 102 is out the window. I have no desire to get new rails and change the water pump and coolant line.
08-04-2016, 10:44 AM
#25
It should still be 15-20rwhp on a 383. I've picked up 15 myself on a h/c ls1 with a 92. It's still worth the swap and you can go back and have it ported later if you wanted.
It really comes down to your overall goals. What ends up happening a lot of times is the small differences start to add up. For example, 1 3/4 header vs a 1 7/8, 92mm intake vs 102, Stage 1 heads vs stage 2.5 or aftermarket, catback exhaust vs true duals etc. It takes a car that will make say 500 rwhp but it makes much less. In your case you don't have all of these things going on but a few. There isn't a right or wrong answer and sometimes cost is a factor, but you just have to think about where you will be happy.
It really comes down to your overall goals. What ends up happening a lot of times is the small differences start to add up. For example, 1 3/4 header vs a 1 7/8, 92mm intake vs 102, Stage 1 heads vs stage 2.5 or aftermarket, catback exhaust vs true duals etc. It takes a car that will make say 500 rwhp but it makes much less. In your case you don't have all of these things going on but a few. There isn't a right or wrong answer and sometimes cost is a factor, but you just have to think about where you will be happy.
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08-04-2016, 11:13 AM
#26
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It should still be 15-20rwhp on a 383. I've picked up 15 myself on a h/c ls1 with a 92. It's still worth the swap and you can go back and have it ported later if you wanted.
It really comes down to your overall goals. What ends up happening a lot of times is the small differences start to add up. For example, 1 3/4 header vs a 1 7/8, 92mm intake vs 102, Stage 1 heads vs stage 2.5 or aftermarket, catback exhaust vs true duals etc. It takes a car that will make say 500 rwhp but it makes much less. In your case you don't have all of these things going on but a few. There isn't a right or wrong answer and sometimes cost is a factor, but you just have to think about where you will be happy.
It really comes down to your overall goals. What ends up happening a lot of times is the small differences start to add up. For example, 1 3/4 header vs a 1 7/8, 92mm intake vs 102, Stage 1 heads vs stage 2.5 or aftermarket, catback exhaust vs true duals etc. It takes a car that will make say 500 rwhp but it makes much less. In your case you don't have all of these things going on but a few. There isn't a right or wrong answer and sometimes cost is a factor, but you just have to think about where you will be happy.
I'm seriously considering it. I'll let you know if I do.
08-04-2016, 11:24 AM
#27
We don't. Since we can't really cnc them, we don't port them. Peak speed shop does really nice porting though.
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08-07-2016, 04:18 PM
#28
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Okay, so I've priced a fast 92 and 92 to after listening to people say how much power I'm leaving on the table with the ls6 intake. Before I really think about this id like to know how much 383 guys have gained going to a 92. A 102 is out the window. I have no desire to get new rails and change the water pump and coolant line.
08-07-2016, 07:01 PM
#29
Why? Then your airflow gets bottle necked . To do a 102 right you need to update it all, your whole airflow track or it really is an unneeded spent amount of money. he will still need new fuel lines, on top of the adaptor to mate to stock fuel rails, then a 92tb still and maybe still grind the water pump or get an ls2 one. Then to optimize the system, fast toys 104 lid and either SD tune or a 100mm mass air setup with correct coupling tubes with a 102 TB.. It adds up to a lot more than just the intake.
If your not going to do the full setup to get it all (as it doesn't seem like your looking to go an race a lot) a fast 92/92 setup will be enough to do what it seems like your wanting to have just a nice street car, that's if you even wanna spend that money on a cruiser
If your not going to do the full setup to get it all (as it doesn't seem like your looking to go an race a lot) a fast 92/92 setup will be enough to do what it seems like your wanting to have just a nice street car, that's if you even wanna spend that money on a cruiser
08-07-2016, 07:12 PM
#30
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I'd leave it the way it is and invest that intake $ into a nice rear end. Don't let these guys talk you into some thing you don't want to do. Unless your just hunting a number.
Whats 500 hp good for if you can't put it to the ground ?
Whats 500 hp good for if you can't put it to the ground ?
08-08-2016, 01:51 PM
#32
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08-16-2016, 12:49 PM
#33
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The rear end is the first thing I would have done, got sick of tearing apart my 10 bolt. My motor is also similar but with ported 90/90 and made 485 through six speed and 9in on a mustang dyno in a trans am down near you I believe. I need to get my new clutch in and see what happens in my car. New dyno numbers will be through 17/8 headers vs 13/4 and I went SD due to my pcm not liking multiple 85mm MAFs for some reason. I think the FAST are worth it if you already have everything else. Oh and id agree on getting that power to the ground, my traction control goes off a lot lol.
08-19-2016, 09:42 PM
#34
If you want hard launches and power shifts, you'll need a rear end. If you don't launch hard and are smooth on shifts, you can take a 10 bolt pretty far with a girdle and good fluid. My 10 bolt was dead silent at 155k and I had 465 LS3 ponies at the tire for 20k of that. You need to realize, this is about more than a peak number. Area under the curve is more important unless ALL the car does is run down the track. A FAST intake usually bumps midrange significantly as well as 10-30 peak. This makes for a more responsive, fun to drive AND faster car. Cost is the only real downside to a FAST, it's just more air so it's not like the intake is causing more wear on your drivetrain than the cam already is. I say do it and do something else at the same time so that you're paying for a retune for more than just the intake. My .02
08-24-2016, 10:01 AM
#35
If the cost of a FAST 92 or 102 intake is a factor, getting the TPIS 90mm snout for your LS6 for $399 could be an option. The worst part of the LS6 intake is the 78mm snout. There are also porting options for the LS6 but the cost puts it on par with the cost of the other intakes. The hp gain with the LS6 90 snout and matched TB might be half or even close to what the other intakes offer. Driveability wise the LS6 90mm TB set up is excellent. With your 244/248 cam the Fast or MSD would likely be able to make more power. With 102 TB's the driveability tuning might be trickier than the 90 TV's. Good luck with your project regardless of intake choice!
09-02-2016, 09:48 AM
#36
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I like to see other 383 combos... This is mine.. 383 eagle rotating assembly, prc 225 heads 62cc, custom cam from Martin Smallwood, fast 90, 1 7/8th headers x pipe true duals, going through a stalled auto and 8.8
12-02-2016, 08:46 PM
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Update: finally got my hands on a fast 92 with a 92 big mouth TB. Also added an electric cutout to open the exhaust a bit. Going to be installing them this week and heading back for a retune. Hopefully I can get north of 485.
