mcmuscle3

iTrader: (10)

Looks like I found a good deal on 08 4.8l rather than a 5.3.
Thinking about a zr1 cam in it and a vs racing billet 7875?
Car is an auto 4l80e 99 camaro , 3.50 gears, 28" tires. Stock weight.
Just trying to figure out a good size turbo to really push this 4.8.
Also I would consider the cheap s475. Thoughts?

svslow

7875 would work fine. Don't waste your time with the LS9 cam.

TURBOLSBIRD

iTrader: (5)

Are you wanting really good spool? Or shooting for big numbers?

67Firebird455

iTrader: (27)

Billet 7875 will make big power on a 4.8. Spend the money on a good cam, I wish I would've after the fact (LS6 cam here in my 4.8).

mcmuscle3

iTrader: (10)

Thanks, looking like a ljms cam may be the way to go. I want decent spool and great numbers.

Project GatTagO

iTrader: (7)

I like the BW S300-SX-E 91S75 for a 4.8...

Andrew

Forcefed86

iTrader: (4)

Need to decide what you are going to rev it to right off the bat. Then match the turbo/cam/intake/valve train to your RPM range.

If you keep the stock intake I’d go with a small cam and the smaller 78/75 turbo. JFR triple 12 is an awesome cam for a mild 4.8. Lots of low end and pulls clean to the factory intakes RPM limit. This will be the cheaper option and you can get by with factory valve train and mild single drop-in springs.

If you go with one of the larger LJMS cam’s… I’d want an aftermarket intake and decent valve train to take advantage of the higher RPM. The larger T6 S475 hot-side would work better on that setup. This part combo will be faster but more expensive…

mcmuscle3

iTrader: (10)

So looks like I may go with a ljms cam. With this more aggressive cam would I benefit from the s475 more than a 7875?
Looking for low 10s with pump and methanol off footbrake

Beanslsxnova

iTrader: (1)

Do the ljms cam and the 78/75. You will be fine. It will easily reach your goals.