Petey-Pop-383

Would the new Diamond L92/LS3 pistons be a good choice for nitrous use?
I'm not sure how new they are but on there blog thingy they say they are new.

WhiteLTone

iTrader: (18)

Peter - thanks for the compliments. It was an iron block 5.3 with stock ls1 crank. Compstar rods, diamond nitrous pistons, dart 225 heads worked over by strokerta, around 12.5:1 comp. Hyd roller custom grind cam from legend racing and bullet. Stock rockers lifters etc. Would go 10.50's on hp. Hope this helps, good luck, I've since stepped out of the stock cube stuff and have a 6.0 on boost. Lemme know if you have any more questions, feel free to pm me.

Dynospeed

iTrader: (3)

What did you shift that thing at? I'm going back and forth right now on staying hyd roller or going solid on my new tfs 245's and mast 4500. I shifted last year at 7300 and crossed the 1/4 at 7450 but she was well done at that point. I went from 3.89 to 3.80 this year.

StrokerTA

With the hydraulic roller, the Super Vic 4150, and a Quick Fuel 850 it pulled hard to 7,800..
We had a 3.90 gear with 28's, would go through the traps about 8,000..

(SS)

iTrader: (1)

Lots of good info in here.

What intake do the LS7 heads like?

http://www.hotrod.com/techarticles/e...top_ls7_heads/

silverls1z28ofdeath

There actually a 12 degree angle. And OP I'm actually building a 416 nitrous motor with these gen x 255 heads with a Cnc nitrous port from TEA on them. I can't wait to see how my setup turns out.

87silverbullet

iTrader: (11)

I didn't know that. I thought it had the same valve angles as the cathedral stuff they make. Good luck with the build. It should be an animal with those heads on there.

01 blue ss

iTrader: (2)

Op, I don't see why you can't run the numbers you want if you have a well spec'd out combo. I tuned a customer's car to a 9.14@149 on an old school 406 sbc with AFR 210 eliminator heads and 11:1 compression in a 3200 lb car. It still had more left in it but the owner of the car wanted to do some changes to the car and start back with it this year. The motor only dyno'd 563 hp at the crank

silverls1z28ofdeath

Thx man and I sure hope so lol

Petey-Pop-383

Thanks for all the posts guys, lots of good info here.
I'm pretty set on the GenX 255 heads, from all the reading I've done and I'm not ready to step into the Mast intake world and the high end heads with the high price tags.

silverls1z28ofdeath I'll PM to talk about the heads and motor stuff, thanks for chiming in man.

01 blue SS, that 406 motor, how much spray was being put to it to go 9.14?

Thanks again guys.

01 blue ss

iTrader: (2)

The TFS from what I am reading is a pretty high end head that I would put up there with a Mast head. Also don't count yourself out on that intake either. Many guys are finding very good power with it over the Edelbrock super vic and victor jr intakes. Plus there isn't a super vic for the LS3 heads either so to buy something like the TFS 255 head and put a vic jr on it would be a waste. Save up your dough and get the Mast intake.

As for that 406 it had 2 stages on it and the 1st stage was a 65 jet and the 2nd was an 82 jet. Both stages were tuned very soft with timing pulled more than needed. 1 stage went 1.34 60ft and ran a 9.57 out the back door. that stage had more in it and so did the second. The car had 3.73 gears with a 28x10 slick with a 4000 Coan racing nitrous stall. I wish i could of leaned on it more but I wasn't the owner for the car so I guess we will have to wait to see.

StrokerTA

Super Vic for LS3 heads will be out by the spring.

StrokerTA

If you can't build a 408 with those gen-x heads that goes 8.60's, something is wrong... Those are some bad *** heads, I would have someone chamber soften them if you plan to run a higher compression ratio and really get after the tune up.
Otherwise most LS engines are VERY sensitive to timing.

01 blue ss

iTrader: (2)

This is one of them things that I'll believe it when I see it. Even some of the people at Edelbrock don't know about the intake. When you call them they don't know anything. Mike@ S-K speed said that his contact said that it will be out by May. Again, I'll see it when I believe it.

Petey-Pop-383

Stroker TA to run 8.60's with the genX heads on a 408 what kind of shot are you considering?

brandon@nitrousoutlet

iTrader: (2)

I was quoted April for a carb version I believe.

StrokerTA

At what weight?

Petey-Pop-383

3200lbs with driver

StrokerTA

Shouldn't need anything too excessive, we went 8.9X's with a 347 on an 82 jet in a plate..
I think a well built 408, even at 3,200 will go mid 8's with around a 200 "shot"..
I am finishing a Trans Am right now with a 408, CNC LSA head from AI.. Holley Hi-Ram, Holley EFI, Induction Solutions dual dry foggers.. It should be over 3200lbs and I think it should go far into the 8's..

87silverbullet

iTrader: (11)

And there is a unicorn tied up in my back yard.

Mike@sk speed said his edelbrock contact said may and one of the guys from edelbrock said later in the summer. As i said before, I'll believe it when it hits the market. This is just like when Wilson said they were going to make that special LS intake that they never made.