poor choice on rear
Thread Starter
Advanced
Joined: Aug 2009
Posts: 59
Likes: 0
From: Newburgh in
That thing was broken in about 5 minutes after you cranked it. No different than throwing a new motor on the dyno. It's either right or it's not.
I ran 4.56's in my old Camaro with a 427 and both a T-400 w/4500 converter and a 4 speed. Pretty much lived at 4000-4500 rpm all the time...but it never hurt it. I still have the motor after 20+ years!
Just depends on how much highway driving you do and how annoying it is.
What did you do to the zz4 to get the 420 HP?
If the planets are all aligned properly 420Hp *can* get you high 11's@117 mph or so hauling 3300 lbs. 117 MPH with a 4.56 gear and a 28" tire is going to take a little over 7000 RPM at the line if I guesstimate the converter slips 8% or so maybe?
But since we're talking a real street car here with accessories, exhaust etc, you won't likely get that much MPH ...so the peak RPM will be a lot lower too. But it's going to need to be happy to 6500 rpm for sure.
JIM
I ran 4.56's in my old Camaro with a 427 and both a T-400 w/4500 converter and a 4 speed. Pretty much lived at 4000-4500 rpm all the time...but it never hurt it. I still have the motor after 20+ years!
Just depends on how much highway driving you do and how annoying it is.
What did you do to the zz4 to get the 420 HP?
If the planets are all aligned properly 420Hp *can* get you high 11's@117 mph or so hauling 3300 lbs. 117 MPH with a 4.56 gear and a 28" tire is going to take a little over 7000 RPM at the line if I guesstimate the converter slips 8% or so maybe?
But since we're talking a real street car here with accessories, exhaust etc, you won't likely get that much MPH ...so the peak RPM will be a lot lower too. But it's going to need to be happy to 6500 rpm for sure.
JIM
