LM7 5.3l question

[addictedtosin]

I am currently looking to do a swap to a 240sx, but I am trying to find some useful threads in which it gives me an idea of what turbo to use to achive 500-525 whp on a stock engine w/ pump 91 gas? Can anyone please help?

[sprayedenali]

theres a good 70mm for sale here...

id say that will do the trick

[ducky]

What mitch said. I made 440/411 on a GT67/.81 on my stock internal 5.3. Small LS6 cam or GT2-3 with the 70mm and about 8-12 pounds of boost should get you there

[ma.racing]

hey man i was gono do that but i found a cheep ls1 and t56 so yea haha but any way im goin with a t70 rear mound lookin for about 15lbs of boost i was wontin 18 but don think that turbo will do it but any way check out these threads

http://www.ls1truck.com/forums/power...-go-18psi.html

http://www.ls1truck.com/forums/power...-go-about.html

http://www.ls1truck.com/forums/v8-co...t56-240sx.html

[addictedtosin]

So an LM7 can handle 12-14 psi on pump 91 octane gas, that sounds to good to be true? I figured 8 psi would be the max is that wrong?

[Sleaper]

hey man i was gono do that but i found a cheep ls1 and t56 so yea haha but any way im goin with a t70 rear mound lookin for about 15lbs of boost i was wontin 18 but don think that turbo will do it but any way check out these threads

http://www.ls1truck.com/forums/power...-go-18psi.html

http://www.ls1truck.com/forums/power...-go-about.html

http://www.ls1truck.com/forums/v8-co...t56-240sx.html

Don't forget to check out this thread too!!

http://www.ls1truck.com/forums/sale-...-70-turbo.html

[ducky]

I'm runnign 12 with no problems. It's all in the tune. Up to 10lbs and you need pushrods and stiffer springs for added insurance

[addictedtosin]

I'm runnign 12 with no problems. It's all in the tune. Up to 10lbs and you need pushrods and stiffer springs for added insurance

how much did you dyno?

[ducky]

440/411 on 12lbs

[ma.racing]

quik is runnin 18psi on his 4.8 with just lower comp heads and arp rod bolts i plan on gettin arp rod bolts head studs and duel valve springs and im runnin an ls6 cam witch i would look into if i were you its a grate boost cam