LS2 GTO 40? plus nitrous Question
Thread Starter
Teching In
Joined: May 2007
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LS2 GTO 40? plus nitrous Question As I understand it if you bore out the stock block to 4.0005 you get a 402/403 most say a 403. How many people have this setup on this board. I would like to know what setup you have and your N/A + Nitrous added numbers. I was explained based on the build, tuning, and timing required it would run around 430rwhp N/A and 570-580rwhp with a 150 shot of nitrous running through it. Does anyone have better numbers or are you running a larger shot. Just inquiring for some answers so I know what to expect and gather ideas before they tear into the block. Thanks!
to get your 364 to a 402 you need to change the crank to a 4''. stock i believe is 3.622.
if 430 rwhp is your your goal na you can do thet effortlessly with your 364. hell even a little ls1 347 can do that without to many problems. search around and read some posts youll read some crazy ****!
good luck
if 430 rwhp is your your goal na you can do thet effortlessly with your 364. hell even a little ls1 347 can do that without to many problems. search around and read some posts youll read some crazy ****!
good luck
TECH Resident
Joined: Jun 2007
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Originally Posted by Georgia GTO
As I understand it if you bore out the stock block to 4.0005 you get a 402/403 most say a 403. How many people have this setup on this board. I would like to know what setup you have and your N/A + Nitrous added numbers. I was explained based on the build, tuning, and timing required it would run around 430rwhp N/A and 570-580rwhp with a 150 shot of nitrous running through it. Does anyone have better numbers or are you running a larger shot. Just inquiring for some answers so I know what to expect and gather ideas before they tear into the block. Thanks!
u can do this easy with a 346-i spray 175 on my 346 with **** heads and a 224-228 cam to get 540-550 rwhp=
so with a set of killer heads and a different camshaft i dont see why not 30-40 hp is not around the corner-
also on a standard short with the same comp ratio as it come out-how long it will last is a different story all-together-
Thread Starter
Teching In
Joined: May 2007
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I was too vague and I apologize. What I was saying is with a 403ci LS2 which is the stock block stroked to a 4.005 with forged internals, I was wondering what people had a similar setup and what numbers they were getting, as well as with nitrous added. Some had told me the lower numbers of 430rwhp without spray and 580rwhp w spray. But I have heard from a few shop owners recently that those numbers are real low. Just trying to get a baseline area of where i will be. Thanks for the responses thus far.
Launching!
Joined: Nov 2005
Posts: 286
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From: Arlington, TX
a 403 with all the proper supporting mods should make 500-550 rwhp depending on the setup. 430 would be pretty low for a 403. as far as nitrous goes just take what ever the engine makes and add xxx hp for the nitrous.
430 hp is more like cam and bolt on car power range.
430 hp is more like cam and bolt on car power range.
