reamo04

iTrader: (9)

wondering if anybody has pics of say a 4" downpipe with their stock k-member. I am using spohn solid mounts if it matters.

phoenix

iTrader: (6)

a 4" dp clears with the spohn solid mounts

reamo04

iTrader: (9)

beautiful!

Thats exactly what I was hoping for. I know with my old LT1 I had to split my 4" into two 3" to get it out the engine bay.

Now I just need to decide on a turbo, looking at a gt45 but i think it may be too small for what I need for CFM requirements.
According to my math
4.8L shifting at 7800 should need about 87 CFM
GT45 flows 80

The only way I can make it work is if i shift around 6600

ninetres

iTrader: (35)

Why spin 7800rpms??? You obiviously aren't shooting for HUGE numbers or crazy times with a 4.8l motor and a GT45. Just spin 7k tops.

smokinHawk

iTrader: (48)

Problem with the 4" dp is once you weld vbands on it will be very hard to put it there like you will have to Jack up the engine put the dp in there then bolt down the motor mount
my 4" with a kmember is hard enough.

TheFallen

whats considered huge numbers? I did 702 with a pig rich AFR on a 4.8 and 88mm. setup was still pulling at 7500 rpms. I believe his idea is from my build he seen over on another site. I still have more in my little 4.8 with leaning the combo out and little more boost. lack of motor size can be made up by rpm in spooling a turbo or turbos