elias_799

iTrader: (8)

what kind of numbers should i be expecting out of a 8.6:1 cr 347 ls1 on 10 psi of boost with a 281 277 115 lsa cam 63a/r precision turbo

it was on the dyno the other day and i only got about 390whp but it had problems with the boost controller and the manifold cracked shortly after

OUTLAWZ RACING

iTrader: (9)

Thats alot of duration on that cam what is the lift ? what type of turbo system?

airforcemanss

iTrader: (23)

that's gotta feel like a dog with that low cr. why so low is this a drag only setup?

transamfreak01

iTrader: (8)

wait am i reading this right? a 347 with a 281/277 cam ?

elias_799

iTrader: (8)

that is what my builder recommended, ill get you guys the full spec of that cam in a sec

elias_799

iTrader: (8)

adevertised duration 281 277
.050" duration 228 224
lobe lift .336 .334
rocker ratio 1.7 1.7
gross lift 571 571
cam lobe separation 115
degreed @ 113

that is all the info i got my my build sheet. any input would be apriciated

elias_799

iTrader: (8)

the turbo system is an old ls1 motorsports kit. which is exactly the same as the tti street kit. going to work on something this winter to replace this piece of ****. tired of pulling it out and getting it welded.

elias_799

iTrader: (8)

aiming for 800whp on pump gas and hopefully no meth, obviously not with the current turbo kit i have.

Daryn

iTrader: (19)

try 14 lbs and see.. im sure your all forged right?

elias_799

iTrader: (8)

motor is forged but i don't know if my 42lb injectors would like the 14 psi.

nasty_ss

a .63 a/r turbo seems kind of small.

Rickys S/C Z28

iTrader: (13)

man with that low CR you should hit it with as much boost as you can

98Z28CobraKiller

iTrader: (17)

Cam looks good but the compression you are running is for big boost.

JC70SS

iTrader: (7)

those 42lb injectors are not even going to handle 7lbs of boost.

elias_799

iTrader: (8)

^^^ people went to 500whp fi with those injectors no problem. why would they not work for me ? am i going to be burning that much more fuel because of the lower cr and more boost to achieve the same numbers ?

hellbents10

iTrader: (10)

The .63 will be a big problem. Also 500 should be OK on your injectors yes.

Automatic trans? Locked converter?

Ign. advance and AFR?

1320

iTrader: (6)

I did a 8.6 to 1 347 in a m6 vette. On a stingy mustang dyno it made 588 @ 11 psi. 593 ft lbs.

It runs two stock gn turbos....with a zo6 cam, water meth, ls6 intake. It didnt even need the meth and I couldnt get he boost higher at the time. It now runs around at about 17 psi on 91 octane.

BTW its going 100% on it 60's with about 70 psi at idle on the rail. I d go further but its needs 83's or 96's and another pump.

Pro Stock John

iTrader: (34)

At 16 psi I was going 10.00@139mph @ 3450 raceweight, I figure that's pretty good for an 8:1 348 cid plus a turbo.

elias_799

iTrader: (8)

yes it is the factory 4l60e with the factory converter, i am really surprised it is holding up. just waiting on this to blow up so i can swap out for a 4l80e.

the only aftermarket parts for ignition is the tr6 plugs at 035 gap

you think i can push the .63 turbo to get 500whp ?

if i made 390whp close to 12psi how much more would i have to push it to get 500whp

also i wend down the track on the Wednesday and i would appreciate i you could point out the problem areas for me.

r/t .286
60' 2.213
330 5.548
1/8 8.185
mph 93.61
1000 .0000
1/4 12.321
mph120.22

this was done with the stabilizer bar disconnected and quite a big exhaust leak. on factory 245 tires.

elias_799

iTrader: (8)

what kind of turbo was it ? also what kind of power did you make on 16 psi ?