My 402 build...
Thread Starter
Teching In
Joined: Jul 2011
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From: Jacksonville, NC
Thread Starter
Teching In
Joined: Jul 2011
Posts: 28
Likes: 0
From: Jacksonville, NC
See I did alot of research on a LS3 fast 102 vs ported LS3/L76 intake and the results were poor for the 102. There were gains but they were minimal. I could spend the extra several hundred on a 102 and 102 TB and maybe see a 8hp gain. It just wasnt worth it to me. If anything restricts me it will probably be my MAF in which case I may just go with a SD tune.
After labor and parts this build will be around 10K so I have to save where I can. If Ryan at RPM says the intake is really choking the motor I will wait till tax season and do the Fast 102.
After labor and parts this build will be around 10K so I have to save where I can. If Ryan at RPM says the intake is really choking the motor I will wait till tax season and do the Fast 102.
Last edited by EVIL 6.0; Jul 18, 2012 at 01:16 PM.
you have a slightly bigger cam and way better heads, I dont see why this car shouldnt break 550rwhp with the 6 speed. Plan on a mcleod twin disk! I also agree with your choice on the ported ls3/l76 over the fast 102. The ls3 is 230 new and will get you within 10 hp of the 102 setup. I had no complains about mine on my prc l92 combo. Whats the timeframe of completion?
Thread Starter
Teching In
Joined: Jul 2011
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From: Jacksonville, NC
you have a slightly bigger cam and way better heads, I dont see why this car shouldnt break 550rwhp with the 6 speed. Plan on a mcleod twin disk! I also agree with your choice on the ported ls3/l76 over the fast 102. The ls3 is 230 new and will get you within 10 hp of the 102 setup. I had no complains about mine on my prc l92 combo. Whats the timeframe of completion?
And Shane has my car now. I'm waiting on new motor mounts to come in and then he is taking it to RPM. Should be going this month. I don't know how long it will take them to do everything though. My guess is a month.
I dont think there is really a single disk that will hold a stout motor setup at that weight, at least for track purposes. You could probably street drive it easily. But the mcleod will be worlds above what you have now,.
Thread Starter
Teching In
Joined: Jul 2011
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From: Jacksonville, NC
Yeah makes sense. I seen Monster came out with a twin disc. I'm sure I'll switch to that or the Mcleod.
Nonsense. The level 3 monster will hold that power. If not monster will warranty it. The level 3 is good for over 700 ftlbs and there are other levels above that.
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Verdad Gallardo Thread Starter
Teching In
Joined: Jul 2011
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From: Jacksonville, NC
Going back to your FAST intake vs. L76. I did the same research you did before deciding on a FAST. Most of the engines that were stock cube whether it was 364,376, or 370 with a FAST 102 didnt pick up anything or even lost with a 102 on there. When it came to stroker setups I noticed the bigger cam motors would pick up more vs. the smaller cam motors but the strokers would pick up period, over smaller cubed motors. If it didn't there was another issue.
The L76/LS3 was designed well for stock cubed motors and a little bit bigger, but when you go 400+ cubes a FAST becomes the last piece of the puzzle to complement everything else.
The L76/LS3 was designed well for stock cubed motors and a little bit bigger, but when you go 400+ cubes a FAST becomes the last piece of the puzzle to complement everything else.
I made 554rwhp through an unported l76 intake, i dont see a fast picking up enough power to justify the $6-700 price difference. I annihilated a single disk that was rated to 750 ft/lbs in less than 15 passes in a 3700 lb f-body. I would just do the upgrade to the twin disk now, while the engine/trans are out rather than worry about it leaving you stranded and having to pull it all back out again.I'm Proactive vice reactive I suppose.
Thread Starter
Teching In
Joined: Jul 2011
Posts: 28
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From: Jacksonville, NC
I made 554rwhp through an unported l76 intake, i dont see a fast picking up enough power to justify the $6-700 price difference. I annihilated a single disk that was rated to 750 ft/lbs in less than 15 passes in a 3700 lb f-body. I would just do the upgrade to the twin disk now, while the engine/trans are out rather than worry about it leaving you stranded and having to pull it all back out again.I'm Proactive vice reactive I suppose.
Theres alot I want to buy right now like a twin disc, new drive shaft, and a tru trac LSD but I really dont have the money now. I still have to pay for the rotating assembly and labor which should be around 5K total.
See I did alot of research on a LS3 fast 102 vs ported LS3/L76 intake and the results were poor for the 102. There were gains but they were minimal. I could spend the extra several hundred on a 102 and 102 TB and maybe see a 8hp gain. It just wasnt worth it to me. If anything restricts me it will probably be my MAF in which case I may just go with a SD tune.
After labor and parts this build will be around 10K so I have to save where I can. If Ryan at RPM says the intake is really choking the motor I will wait till tax season and do the Fast 102.
After labor and parts this build will be around 10K so I have to save where I can. If Ryan at RPM says the intake is really choking the motor I will wait till tax season and do the Fast 102.
Thread Starter
Teching In
Joined: Jul 2011
Posts: 28
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From: Jacksonville, NC
Trust me I know. It will peak early. Check out my motor it peaked at 5800. It will spin to 7400 but why when its all done by 6400. Your build will still be a fun ride. mine has been for 2 years. I have a Mamo 102 waiting to replace my 76 intake. Then we will really know.
This is one of the thread I read through and it gave me no reason to buy a LS3 Fast 102. Even another 402 guy said he gained nothing going from a stock L76 to a Fast 102.
https://ls1tech.com/forums/generatio...ast-102-a.html
I see your power Brandon and it makes me happy I went with the ported L76. Maybe if I get a bonus down the road I will get the Fast. Really, the highest HP 402 I have seen was in Nick Williams 402 Vette which made 470 I believe.
Theres alot I want to buy right now like a twin disc, new drive shaft, and a tru trac LSD but I really dont have the money now. I still have to pay for the rotating assembly and labor which should be around 5K total.
Theres alot I want to buy right now like a twin disc, new drive shaft, and a tru trac LSD but I really dont have the money now. I still have to pay for the rotating assembly and labor which should be around 5K total.
Thread Starter
Teching In
Joined: Jul 2011
Posts: 28
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From: Jacksonville, NC
If this what you did? If so could you shoot me an email explaining how it all went down and what you got for your block?
