transamws6_97

iTrader: (5)

he is way down on power...a bolt on lt1 stock internals should trap at least 106. Figure out why it's not making the power it does. The et is about right for the mph could be a lil lower but its acceptable.

and to wickedbusa
my friends cammed ls1 traps 117-118 and goes 11.7-11.8 so i think your fine you probably could pick up a lil et

the_merv

iTrader: (88)

He could be trippin the Knock Sensors and it's retarding the Timing.. that would kill a pass..

My Bolt-on Hot-cammed 350ci LT1 with 3.73's on street tires ran 12.5's with a 1.8 60ft..he definately has some problems..

dre2013

iTrader: (7)

he's shifting too early. i shifted my 355 with cc503 at 6300 which seemed a little early. with a cam the size of his he would want to run the gears up to at least 6500 or so. I kept getting beat my a friends bolton 13.6 t/a until i realized that i was shifting way early(around 6k). we went back out again with me shifting at around 6300-6500 and it was a completely diff race.

SS MPSTR

iTrader: (1)

absolutely - something is seriously amiss in that combo. even short shifting and short times measured with a calendar, that car should be trapping significantly higher than 106.

HottLS1Z

iTrader: (5)

So....I'm guessing with a full dyno tune instead of the mailorder tune (currently mail order with 6200 rev limiter) a tire, and maybe a little suspension work this should be a solid low 12 sec-high 11 sec combo then?

Prototype007

iTrader: (2)

I would address tires first before I resolved to a full dyno tune and see if he is just really spinning that much.

daniel6718

iTrader: (36)

car should be a solid 11 sec car...when you get the power back that it should have et will come with it...thats why i said mph...et will come with the mph inroovement

HottLS1Z

iTrader: (5)

Well, I cant see more then maybe 10 mph improvement even with a tire and a better tune. sound right? What are other full weight 383 LT1's trapping at?

lt1noob

iTrader: (4)

yes something is wrong, i would guess hed be running 12s...at least.

robsquikz28

iTrader: (246)

something isnt right at all it might not even b a 383 or even the worst build ever stock lt1 or 383.. 80% of these cars have stock lt1 with just simple bolt ons run 13's all day easily so with with this build it should be 11's. here with my car i ran 12.23 at 122mph with stock tires with the drs it way faster. ur build or tune is jacked up get it fixed quik and dyno it as well.

TwoFast4Lv

iTrader: (8)

The Teal Car is one of our cars.

the White car is the Car i was talking about.

kinglt-1

iTrader: (26)

That setup is not going to et at all. he is running 3.42 gear and needs to be running a 4.10 with that big duration cam. Also since that cam's duration is 236-240 you should be twisting it to 6500-6700. that is costing the car power!!! Drop that 2.2 60ft down to a 1.8 with some dr's will definately help. Correcting these three issues should drop a full second off the et easily with a good driver!

WS Sick

My old 383 only had 9.8 to 1 compression and it trapped 120 mph.

When I first put it together it ran like crap, the knock sensor was seeing knock ALL THE TIME I desensitized it and the motor acted like I just added 100 hp. We later tuned it with a stand alone AFR logger and made sure it was false knock (it was).

Turnin20s

iTrader: (12)

I agree that somethings wrong with the car. He needs to bump up the shift points, probably around 6500 rpms, change the rear gears out to 4.10s. But it needs to be put on a datamaster or something to see what the problem is. Its pretty poor that the car is traping about what a stock car with bolt-ons would. I had a problem with my car not running worth a **** after I got it out, but turns out I burnt 2 plug wires in half. It would idle perfect, but had a horrible dead spot from about 3000-6500. I raced my brothers '94 Cobra with LTs, X pipe, catback, gears and intake and would barely beat him. I replaced the opti and wires and then put in some NGK TR55s and it ran like it should. Could just be something stupid, or could be a big problem.

Let us know what happens though

Elliott's94Z

iTrader: (12)

He must be a horrible driver to pull that time

OutlawZ

iTrader: (4)

With that same motor almost (only mine was a 355 with the same cam) I ran 119 in the quarter mile on slicks.... I ran 106 when I had a few bolt ons and entire motor internally was stock. Something is SERIOUSLY wrong..... make sure motor has all 8 plugs where they are supposed to be....

tscheu5452

I ran 12.9s with stock ported head and a mild 211/219 cam @111 mph. Haven't been to the strip yet with my 383 combo, but I'll be pissed if I can't do low 12s or high 11s. Something is wrong.

LT1MAN

iTrader: (6)

the 60 foot is the main problem, 1 tenth in the 60' is 2 tenths in the quarter. and who ported the heads and what does the car make power wise on the dyno and is it tuned. my 383 with stock heads runs 12.7 @110 with a 2.0 60' (my first and only quarter mile run, the next one broke my torque arm). so anyway i figure a 1.7 60' would net me a low 12 run, which i think is where i should be for stock heads and a 306 cam. (i got ripped off thats why i have stock heads)

so if your friend ran a 13.36 on a 2.3, 6 tenths off of that 60 would net him a pretty straight run.

Purple95Z28

iTrader: (6)

The 60' is NOT even close to being the "main problem" here. He is definitely down huge on power, probably retarded timing due to knock detection like some people said above.

My 6 speed car with 4.10s, cold air, 1.6 rockers, tune, and very very lightly hand-ported heads trapped at 107mph, and put down 286rwhp (completely stock exhaust including cats).

19mike84

maybe someone threw a banana peel on his side of the track and he couldnt get traction. it would happen in a cartoon...