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Critique this 402 setup

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Old Jan 31, 2006 | 07:42 PM
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Default Critique this 402 setup

Ran into some bad luck with my 427 setup. Found out the darton block was cracked when it got filled up with coolant today . Going budget now, and my shop is going to get me a LS2 block w/ a new set of pistons. Haven't been keeping up with 402's, so tell me what you think of the h/c setup with the parts I already have, streetability, power, ect.

TEA stage 3 6.0L heads, 2.10/1.60 peak flow 343/268 @ .600 (graph didn't go higher)
port matched FAST 90mm/NW TB
244/250 .635/.625 112
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Old Jan 31, 2006 | 09:11 PM
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Sorry about the 427

I don't know too much about LS2's, but I would LOVE something like that in my car!
I don't think the streetability will be great unless you have a REALLY good tune as that is a big cam.
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Old Feb 1, 2006 | 05:36 AM
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Originally Posted by gun5l1ng3r
Sorry about the 427

I don't know too much about LS2's, but I would LOVE something like that in my car!
I don't think the streetability will be great unless you have a REALLY good tune as that is a big cam.
Yeah, I haven't seen many 402 setups here so I'm not sure how the cam will be on the street. It's not a daily driver, so I guess it should be fine. Just wondering if someone had something to compare it to.
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Old Feb 1, 2006 | 09:29 AM
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i'm no cam specialits by any means, but i would think that cam is a forced induction cam - are you supercharged or turbo'd?

the reason i ask (and again, i'm almost cam illiterate, but have been reading a bit about them) is that boosted cams are usually off balanced on intake and exhaust in both duration and lift - i just don't know which F/I type tips the scales in which direction.
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Old Feb 1, 2006 | 09:36 AM
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I have a 402 and I am in the process of switching to a solid roller but I will fill you in on the hyd cam I was running. It was a 248/250 610/612 on a 113 LSA and the engine is NA. It isn't my daily driver but I could of very easily of daily drove this setup. I am running AFR 225 heads with the Fast 90 Intake.
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Old Feb 1, 2006 | 09:49 AM
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Originally Posted by 11 Bravo
Ran into some bad luck with my 427 setup. Found out the darton block was cracked when it got filled up with coolant today . Going budget now, and my shop is going to get me a LS2 block w/ a new set of pistons. Haven't been keeping up with 402's, so tell me what you think of the h/c setup with the parts I already have, streetability, power, ect.

TEA stage 3 6.0L heads, 2.10/1.60 peak flow 343/268 @ .600 (graph didn't go higher)
port matched FAST 90mm/NW TB
244/250 .635/.625 112
Looks pretty good to me
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Old Feb 1, 2006 | 10:13 AM
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you can daily drive my 25x/26x cam in my 402
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Old Feb 1, 2006 | 11:15 AM
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sounds like a good setup, heads sound really good too.
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Old Feb 1, 2006 | 12:24 PM
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Well I would go with a set of big E.T heads or AFR 225's. I have a 258/262 on a 110 and I drive it everywhere, not daily mind you but everywhere. As for a intake if your more into drag racing I would get the Vic jr efi intake.
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Old Feb 1, 2006 | 04:14 PM
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Originally Posted by speedracer5532
I will fill you in on the hyd cam I was running. It was a 248/250 610/612 on a 113 LSA and the engine is NA. It isn't my daily driver but I could of very easily of daily drove this setup. I am running AFR 225 heads with the Fast 90 Intake.
Sounds almost exactly like the cam I bought from Rapid. I'm also running the same heads and intake.

11 Bravo - Sorry to hear about your recent misfortune. Even though the LS2 402 is considered a "budget" buildup compared to the 427, it will absolutely scream if built with properly matched components. The parts you have should work great. I believe speedracer5532 was one of the first LS2 402's to dyno and put out 500rwhp if I remember correctly.
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Old Feb 1, 2006 | 04:24 PM
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i would say that combo looks really good..... you could go a little bigger on the cam if you didn't care about daily driving it. regardless, it should make some sick *** power!
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Old Feb 1, 2006 | 05:29 PM
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Originally Posted by DrkPhx
Sounds almost exactly like the cam I bought from Rapid. I'm also running the same heads and intake.

11 Bravo - Sorry to hear about your recent misfortune. Even though the LS2 402 is considered a "budget" buildup compared to the 427, it will absolutely scream if built with properly matched components. The parts you have should work great. I believe speedracer5532 was one of the first LS2 402's to dyno and put out 500rwhp if I remember correctly.
DrkPhx is pretty much right. I got the second 402 that Mikey built. The first one he did dynoed 553 rwhp and 490 rwtq with basically identical setup and components to my car. I went a 10.81 @ 130 mph with Mikey's setup @ 3700 lbs race weight. I always like to mess with things so I will let you all know how I do with this solid roller once I get it in and dynoed. I have done alot of research and alot of talking with Tony Mamo at AFR, so I think I should pretty easily be able to run a mid 10 with a full weight stick street car with the solid roller.
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Old Feb 1, 2006 | 07:25 PM
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Originally Posted by gun5l1ng3r
Sorry about the 427

I don't know too much about LS2's, but I would LOVE something like that in my car!
I don't think the streetability will be great unless you have a REALLY good tune as that is a big cam.
Driveability will be just fine. that is a mild cam for a 402 because of the extra cubes

Togo- a F/I cam will usually have more intake than exhaust such as a 242/236 and will usually have a wide lsa such as a 114 through 118
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Old Feb 1, 2006 | 07:28 PM
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Originally Posted by 11 Bravo
Ran into some bad luck with my 427 setup. Found out the darton block was cracked when it got filled up with coolant today . Going budget now, and my shop is going to get me a LS2 block w/ a new set of pistons. Haven't been keeping up with 402's, so tell me what you think of the h/c setup with the parts I already have, streetability, power, ect.

TEA stage 3 6.0L heads, 2.10/1.60 peak flow 343/268 @ .600 (graph didn't go higher)
port matched FAST 90mm/NW TB
244/250 .635/.625 112
Your setup looks to be perfect. Great flowing heads, good mid sized cam, and a port matched 90/90 should put down some great #'s with a good tune. Will be very civil and make great power, what more could u ask for ? Heh, there is also no need to goto an AFR head or an ET head. What you have is great.

What do you have for bolt-ons and exhaust ?
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Old Feb 2, 2006 | 02:00 AM
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Originally Posted by lilbuddy1587
What do you have for bolt-ons and exhaust ?
I have QTP 1 7/8ths, orp, Borla, TSP 90mm lid, 85mm MAF, pulley. Pretty much everything. I won't buy another cam mainly because I've already lost so much money getting this damn thing together. The block is only part of it lol. Now, I am actually leaning toward a truck block, only because of the price. I'll make a decision later today before I order.
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Old Feb 2, 2006 | 02:07 AM
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Originally Posted by 11 Bravo
I have QTP 1 7/8ths, orp, Borla, TSP 90mm lid, 85mm MAF, pulley. Pretty much everything. I won't buy another cam mainly because I've already lost so much money getting this damn thing together. The block is only part of it lol. Now, I am actually leaning toward a truck block, only because of the price. I'll make a decision later today before I order.
Well, just be sure to add in a cutout(30 bucks) it will help a lot! Good luck man.
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Old Feb 3, 2006 | 05:37 AM
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Originally Posted by speedracer5532
I have a 402 and I am in the process of switching to a solid roller but I will fill you in on the hyd cam I was running. It was a 248/250 610/612 on a 113 LSA and the engine is NA. It isn't my daily driver but I could of very easily of daily drove this setup. I am running AFR 225 heads with the Fast 90 Intake.
How's the change going John?
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Old Feb 3, 2006 | 05:50 AM
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Originally Posted by mikey
How's the change going John?
I have been busy I haven't had much time to work on the car lately. I just took the heads to the machine shop to have the spring seat opened for the 1.550 springs and to have a clean up mill of the heads. As long as don't have to fly cut the pistons I might have it running again the weekend of the 18th but most likely the weekend of the 25th. I can't wait to get it running again.
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Old Feb 4, 2006 | 04:40 PM
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Originally Posted by speedracer5532
I have been busy I haven't had much time to work on the car lately. I just took the heads to the machine shop to have the spring seat opened for the 1.550 springs and to have a clean up mill of the heads. As long as don't have to fly cut the pistons I might have it running again the weekend of the 18th but most likely the weekend of the 25th. I can't wait to get it running again.
Best of luck. Let me know what kind of power gains you see with the new cam.

Mikey
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