jkade72

iTrader: (23)

99 4.8 with 5.3 crank, ls1 rods and stock 4.8 pistons, Patriot 226/226 Dur. @.050 .585"/.585" Lift 112 LSA, 918 springs, comp pushrods,(do I need new lifters with a 100k motor?) 3200 stall, ls1 intake since I have a 98 ls1 computer and harness, 28.8 injectors, mail order tune, mid length ls1 headers, true duals with h pipe, and custom air intake. I am running 3:73's, eaton posi and a 29.5" tall rear tire. How does this sound? Will it make good numbers and I guess it will be 93 octane for me right?
Thanks and let me know what you think.

white1

iTrader: (5)

I think the crank, rods, and pistons won't work well with each other

truckmann

iTrader: (8)

Even if it will work it sounds like a lot of work, time and $$ for very little gain compared to Just getting a bigger engine.

Quik

iTrader: (7)

i see your shooting for a 10.1 cr 4.8 that can rev to about 6700rpms. sounds interesing

Keith

Not with a 5.3L crank. He is making a 5.3L

jkade72

iTrader: (23)

So it won't work??? A lot of people say it will. Someone tell me for sure if it will work.

jkade72

iTrader: (23)

This is not going to be a track truck and it won't be raced either. This is to get gas mileage and still have some power to play with. I think it will perform all hell of a lot better than the 283/th350 combo I have now.

white1

iTrader: (5)

Im pretty sure (not 100% sure) tht the piston pin placement on the 4.8 piston will not work with the LS1 rods and the 5.3. It will physically fit, but I think the piston will protrude above the block

jkade72

iTrader: (23)

I guess I will find out when I tear down the motor and do some measuring. Hell if it won't work I will take it and bore it to a 5.7 Someone has to know for sure though.
Thanks

jkade72

iTrader: (23)

No one Knows if it will work??? If it does I guess I will be the first. TTT......