456gearz48

hey guys my truck has a problem once it hits 3rd it just stops pulling ive had it over 100mph plenty of times but it just lags really bad and noticed it at the track tues night my time was
60 ft 2.204
330 6.321
1/8 9.694
mph 73.11
1000 12.650

et 15.187
mph only 88.57
i feel im really good on low end but top end theres something slowing it down and im going though the traps at 5000 rpms in 3rd so the rpms are up
i have 4.8 jeremy flomato street tune, 456 gears, circle d stall ,volant intake ,
thanks 30 inch tire

Chevy_King1500

iTrader: (7)

you only need to go 88 mph

456gearz48

lol and you only need a 4cly

Suburbazine

I don't see a lot of supporting mods that would make a 4.8 fast on the top end.

Scrapin'4.8

iTrader: (3)

yeah and 4.56 gears with a 30" tall tire isn't gonna result in huge top end power

Chevy_King1500

iTrader: (7)

what speed is your 2-3 shift?

88 mph 3rd gear at 5000 rpm just doesnt sound right.

transmission might be slipping..

456gearz48

[QUOTE=Chevy_King1500;5136167]what speed is your 2-3 shift?

88 mph 3rd gear at 5000 rpm just doesnt sound right.

transmission might be slipping

shifting at 73 mph excactly

Chevy_King1500

iTrader: (7)

your setup calculates 4495 rpm at 88mph 1:1 so unlocked that would seem reasonable,

you just need some more power

456gearz48

thanks man what would be the best way really dont wanna FI want all motor would a cam help alot ?

Chevy_King1500

iTrader: (7)

what size stall? u have a reg cab?