Daryn

iTrader: (19)

so i recently finished rebuilding my motor and decided to throw a t rex (+4advanced) in there and smoothed the runners on my stock heads(ls1). also plugged the EGR hole on top my manifold....

anyway i go get my car dyno'ed and after tune it gets 371rwhp and around 360rwtq... this is with full bolton's 3400 stalled th350 , STOCK 3.23 gears
+ whats listed above.

my question is what do i need to do to get this cam workin?.... are the gears really holding it back this much?

driving, i can deffinately feel a difference in power ,i just thought it would put a little more on the dyno

rocksws6

iTrader: (4)

Usually a lower gear ratio makes you dyno less. If you put 3.73's in there its likely that its going to make less on the dyno. I definately think that it should make more power than what it did though. This was on a Dynojet? Is it falling off on the top end? Are you still on the stock intake?

BlackScreaminMachine

iTrader: (17)

Define full bolt ons, you stated you plugged your EGR, I tend to think you have a LS1 intake manifold, not a LS6 or FAST. Do you have a U/D pulley??

Who did the tuning?

I know the ave hp loss from a m6 to a TH400 is just about 70-75 hp in a car that makes 450-500 hp, But I dont know what TH350's loss if any compared to a 4L60e.

I think your missing some stuff, the trans is possibly holding you back and either way its going to go fast due to the trans if the car's suspension is set up properly.

import slayer

Does the intake make that much of a diffrence?

93redBIRDman

iTrader: (9)

10+ rwhp, so yes it does make a good difference. probably 20+ in your case if you went with the FAST 90/90

GT Griller

iTrader: (8)

I say take it to the track and see the real world results.

Cobra2WS6

iTrader: (22)

The ls1 intake and stall are holding your numbers back...

93redBIRDman

iTrader: (9)

also, what did you rev it to on the dyno? Where was your peak hp/tq?

Daryn

iTrader: (19)

bolt on= LT's/True duals,
slp 25% UD pulley,
P&P throttle body/w the bypass,
msd wires,
TR6 plugs,
lid /w k&n,
smooth bellow
took the AIR off
took the EGR and cut the little hose that sticks down in the manifold, and plugged it off

-elgin lifters
comp adj timing set
crane duals springs
TR pushrods
smoothed runners
T-rex +4advance

this was on a dyno jet with a 3400 stall going through a th350 with draglites on 26" drag radials

BES Stroked Nova

iTrader: (24)

with the gears, stall and a LS1 intake... numbers sound about right. but if you really want to know how fast it is, take it to the track.

PREDATOR-Z

It will not do that well at the track, too low a stall and too low gears.

What is hurting you most in power output is the intake. also why are you running colder TR6 plugs? are you spraying? If not go back to TR55 or similar and check your tune.

What was you base output before cam change?

import slayer

The T-rex cam needs a 4000+ stall and at least 4.10's

BES Stroked Nova

iTrader: (24)

+1 for that!

that cam, that small stall, and those gears... they are just

93redBIRDman

iTrader: (9)

agreed. Also like I asked earlier, what did you rev it to on the dyno? What was your peak hp/tq

post the graph if you can

Daryn

iTrader: (19)

i plan on goin wiht a 4000 stall, and either goin 3.73 with my 26" tire or a 4.10 with a 27"
and of course a fast 90 (ported maybe) with a nick williams 90mm throttle body

Daryn

iTrader: (19)

heres the dyno graph.. see where it kinda goes flat then picks back up
deffinately a gearing problem

GT Griller

iTrader: (8)

It peaks kinda early for the t-rex

98Camarod

iTrader: (43)

You made about 20 more hp on the second one, but you made 20 less tq. I dont know how good of a comprimise that is. Whats the afr during the runs? If you still have the 98 heads that can put a damper on the numbers also.

HTX

iTrader: (1)

an example of big cam bad combo...
that and the fact that turbo transmissions are horrible on dyno's

Daryn

iTrader: (19)

so in order to get the horsepower that im lookin for, i will need minumum 3.73's , 4000 stall ls6 or FAST intake ?