da vette guy

2014 5.0 rcsb ran a 8.89 at 80.3 mph in the 1/8 truck has offroad y-pipe 4.10 gears mpt tune and 1200 miles wondering how it compares

LTNBOLT

This is my 2013 RCSB 5.0 STX with 20" FX wheels (probably cost me close to .2 seconds because of the height and weight difference). I have a 3.55 limited slip rear gear. Changing from the 18" to 20" wheels effectively changed the rear gear to a 3.37 rear gear. I have an MPT tune, K&N filter panel in the stock box and resonator delete with 3" pipe and Magnaflow muffler.


I would say in the quarter mile you are in the very low 14's or high 13's.

da vette guy

mine is a STX with sport package which comes with 20 in wheels and 275/55/20 tires and they are pretty heavy..

LTNBOLT

Did you run it after the 4.10 gears went in before the Y-pipe?

LTNBOLT

In my 2000 Lightning I went from 3.55 to 4.10 gears and picked up a tenth in the 1/4 mile. I was heavily modded at the time so I don't think I got as much out of them as a stock L would have picked up. I ran about 12.2 at the time. I took them out and put 3.73 gears in because it was so treacherous on the street without drag radials.


It didn't cost much parts wise to change gears with the old 9.75 rear end compared to these later model ones. I had a Ford SVT mechanic that would change them on the side for $100 labor. I used factory gears. He would have it done in about an hour and they would be nice and quiet.

da vette guy

this was my first time at the track with this truck
wish I could have done a before and after with just the gears and the same with the y-pipe

Mkrantz1106

I ran a 8.74@80.74 with K&N cai, 3.55 gears Mak y pipe on 28" drag radials and my revolution tune what was your 60'?

Mkrantz1106

I'd say you'll be 13.7s me running a 13.9 I had a 9.00 1/8 mile

da vette guy

da vette guy

i know it doesn't affect time but my crappy reaction time was on a pro tree and wasn't running anyone ... like I said earlier this was with 275/55/20 tires(31.90 inches tall) stock stx sport wheels, mak y-pipe MPT tune and 4.10 gears full weight ...