Is 10.5:1 compression too high?
 

I'm currently sitting at 11.4 compression on a N/A 408 and I'm thinking about adding a turbo. Maybe an S480 but I'm not sure. If I go the FI route, I would send my LS3 heads to Richard at WCCH and get them ported and opened up to 75cc chambers for a 10.5:1 compression change. Is that too high for a daily driver on boost?

I've never played with forced induction before so this is all new to me. Could I run 8-10 lbs saftely with a normal timing curve? Thanks guys

Yes, it will be fine as long as you have good fuel.

^ what he said. I'll be running 10.2:1 on pump gas 11psi I'm currently sitting at 9.5:1

as long as fuel is good u should have no problem

Sounds good guys. What turbo do you like for a daily driver 408, LS3 heads, 3200 stall converter?

People always say good fuel, but in vegas you really gotta be watching for detonation as the weather changes. I do a lot of checks on the turbo cars as the weather warms up ( if the car doesn't have some sort of guage for monitoring AFR and knock youre kinda askin for it ) Tuning isn't hard but its gotta be done right.

Only takes a second to scan it and check it out. Hope to see the ride around with the Turbo setup!

Yea I guess I should have specified that I'm in Vegas. It's gets damn hot here. With 10.5 compression, I was worried about the IAT's and timing. That's what I was asking about a normal timing curve.

Meth + vegas is great. On front mount turbo cars Ive seen the underhood temps get high enough to start pre-boiling fuel. ( Thats always fun )

When running meth, how often do you have to refill the tank?

Hi Jake,

Ever hang out with the VegasLSX crowd? Come Check us out. We have another guy who just put a front mount turbo in his 2003 GMC Sierra 5.3.

VegasLSX

We meet at Town Square on Friday Nights, 7:30 pm, and at Cars n Coffee on Saturdays at around 8:00am.

See ya,
HRHohio (on this board)
(Bad Z28 on the VegasLSX board)