02*C5

iTrader: (1)

Ok the dilemma is this. I have the ability to attain an iron block 402 forged manly rods diamond pistons and crank short block everything set up for spray for $3K. I can put this thing together my self no issues. I was saving to get a Ktech 402 aluminum. Now there is a 3K difference between the two yes Ktech by far one of the best products out there.

I do like all the pluses the aluminum brings running cooler, lighter, etc etc but those of you who have an iron block in your Corvettes let me know good, bad or indifferent. This would be my first 402 iron block for personal use.

Am thinking pushing a 300 shot through her.

thanks for the input.

robert miller

i have the aluminum ls2 out to 402, But if you are going to shot it with a 150 plus shot go with the IRON block for sure. Plus put the 3,k you are going to save back into something more on the car. You will not be able to tell the diff in the weight or the drive of the car...

02*C5

iTrader: (1)

I guess my other question would be would a 4L60E handle the power build lets say by a place like RPM

pittman

iTrader: (1)

There is a shop...Performa Built, that gives you a 2 year warranty (even racing) and dares you to break it. That will be my next stop !

02*C5

iTrader: (1)

ROFL...
I talked to my tuner and we talked and I think I am going to wait the iron block is going to throw my 50/50 off which i knew but I am also going to have to redo my whole cooling system since they run hotter and the Corvette's is constructed for the aluminum blocks. Man but i am going to take your info and tuck it away. I think I'll pick up an LS2 and punch it out to a 402 get forged internals and set it up for a 300 shot. I know that the right set up can hold the shot. **** and i was dreaming but I really don't want to set up my car for a straight line runner only. If I wanted that i would have gotten an F-body back to the drawing board.

I new stick is in order.

mark_H14

my friend got some mod done on Performa Built and its cool..

synisterC5

Wait a minute.....
I'm assuming the motor you speak of is an lq4 or lq9?
The weight diff between that and an ls1/6 is only 60 lbs(ls1 110lbs, lq4 170)
im sure your exhaust has already saved you half that and a lighter or relocated battery would make up the rest.
As for cooling, your stock cooling system should be adequate, atleast i havent heard of any solid examples of it not being.

ls1290

iTrader: (20)

No... kind of. For a 4L60E, one can upgrade the internals to handle 800 to 900 rwhp, but you still still run through clutch packs like water. They are just not designed to handle that kind of power.

robert miller

I have a YSI unit on my 402 pushing 857 rwhp with RPM stage V trans and rear end set up also. This set up is and has worked good so far for me. Have a friend with over 900 rwhp same trans has been to the track all the time for over 2 yrs with no problems.He is in the very low 9,s.