how much to gain with just a simple gear change!!
#7
I put 4.10's in my GTO back in the summer time along with new axles, stubs, clutch and driveshaft. Otherwise, I'm stock. The gears didn't even come CLOSE to living up to the hype that they've been given. The car definitely has more pick up and go in 4th, 5th and 6th gears, but I don't feel much of a difference at all in the first 3 gears.
Granted I never ran it at the track so i can't give you time differences, but for your car, you might see a few tenths depending on the cam you're running and its powerband.
Granted I never ran it at the track so i can't give you time differences, but for your car, you might see a few tenths depending on the cam you're running and its powerband.
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#10
yeah there rediculously expensive. its my friends goat 6 speed with a 230/236 .540/.540 110lsa and ls6 243 heads with bolt ons. he's hoping to run low 12's after the 4.10's
does this sound feasible?
does this sound feasible?
#12
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#15
I agree that with bolt ons he should already be in the 12s with a 5.7. With just headers I was 12.9x. That would mean the diver mod would be most beneficial. He'd probably lose tenths. I have 3.91s on my 5.7 now and gears made it harder to launch not easier. On the street they're fun on a roll but at the track traction is a problem
#16
I agree that with bolt ons he should already be in the 12s with a 5.7. With just headers I was 12.9x. That would mean the diver mod would be most beneficial. He'd probably lose tenths. I have 3.91s on my 5.7 now and gears made it harder to launch not easier. On the street they're fun on a roll but at the track traction is a problem
#17
RPM-wise he'd be fine but I'll bet his 60 goes higher as well as his ET and he'll be fighting wheel hop. A4s with 400 RWHP and stock gears can do high 11s, very low 12s with only 110-111 traps. They're also getting 1.6 60s. He won't be running 115+ at 400 RWHP. My car runs like hell once it gets going but even trapping near 115 MPH I'm only getting 12.34 because of the 60 and I'm a decent driver. These cars don't launch like fBods. What's he trapping now and what are his 60s?
#19
but since then he's added new injectors that he needed cause his were maxed out.
so drag radials
injectors
new gears
and shift at 6500rpms
Last edited by Fastdriver1992; 11-29-2010 at 04:31 PM.
#20
he's got mickey thompsons, drag bags, and polyurithane bushings in the back. he ran the car wit street tires and couldnt hook up and only 60' 2.200 and ran 13.5 at 105 short shifting at 6000rpms
but since then he's added new injectors that he needed cause his were maxed out.
so drag radials
injectors
new gears
and shift at 6500rpms
but since then he's added new injectors that he needed cause his were maxed out.
so drag radials
injectors
new gears
and shift at 6500rpms