mcshocks

iTrader: (2)

Runing a forged bottom LS1 with TEA 706 heads, LG G6x3 cam, & a TPIS 90mm converted LS6 intake that was ported by LS2 port works and just can't get the car to 60' worth a crap (best of a 1.64). Bought the car with this cam and it really seems to be the problem. I had FTI spec me out a triple disc TC that should flash 3800-4k RPMs and the thing only flashes 3300rpm. Looking to see your input on this, feel like the car is missing some MPH & HP in the mix too. I attached a pic with the cam card too.

HCI2000SS

iTrader: (2)

What tire and wheel setup? What is the race weight?

mcshocks

iTrader: (2)

Runing a Hoosier 275/50/15 out back & some 17" M&H front runners that are 26" tall, 3:73 gears, race weight has to be low mid 3k I've never weighed it.

Old Geezer

iTrader: (3)

Data logs?
Tune screwed?

mcshocks

iTrader: (2)

Tunes great we've picked up 3/4 of a second with my tuning guy, just doesn't seem to make any bottom end.

Tuskyz28

What shocks is under the car ?
Does it spin at all ?
How does it leave the line?

Nicelysedate

iTrader: (3)

What is your 1/8th mph and ET?

A.R. Shale Targa

iTrader: (2)

Yeah at 3300 Rpms in a stock short block, that cam is at least 500-700 away from hitting the tire hard

mcshocks

iTrader: (2)

1/8th on motor: 7.30 @ 95mph

mcshocks

iTrader: (2)

Stock shocks with no front sway bar, thing hooks pretty much anywhere even on the street, zero tire spin.

RollinSScamaro

iTrader: (25)

Are you just launching off idle-1500 or loading it to 3300 and launching from there? Try launching from a lower rpm maybe?? May help you transfer weight better.. I was just doing the same with my ss4000 and could only pull a 1.8.. being lowered I wasn't transferring weight well preloading to over 3k before the launch.. just a thought??

mcshocks

iTrader: (2)

I've tried loading, off idle & off my 2 step, same results every time, can only footbrake to 2800rpm before it starts pushing through the brakes. Transbrake would be the ticket but I'm runing a 4L60E.

speedtigger

iTrader: (16)

What is your compression ratio? That camshaft is going to want some good compression. Also, that cam is going to want a 4000+ stall converter to be happy.

JakeFusion

iTrader: (7)

Why a triple disk? Sounds like a blower converter. Spray it out of the hole. The 3300 stall is why you can't 60. And you can't get to 4000 because you don't have enough motor it sounds like for the tightness of the converter.

mcshocks

iTrader: (2)

Upper 11's on compression there's Manley flat tops for the slugs & the heads have 59cc chambers, think you've all confirmed what I've thought. Need more low end & power over the curve.

mcshocks

iTrader: (2)

Triple disc was a suggestion per FTI, thing can be locked at WOT if need be. Things designed to flash 3800+ just on motor, were already at 14% slip just on a 150 shot (blowing through it) I had a tighter PTC converter before and we gained .5 just on motor with this FTI unit. Already knowing I'll have to tighten it is why I'm looking for input on this cam profile. Plan is to get it sorted on motor, tighten the TC once I'm happy, then gradually work up to spraying 300 at it.

NHRAFORMULA00

iTrader: (2)

4.10 gears and at least a yank ss4000 converter or something like it.

jblankenship

iTrader: (5)

Converter is the problem. Was the converter speced for motor or nitrous? 14% slip is a lot.

Old Geezer

iTrader: (3)

As I asked in my previous post: Data logs?
W/o them, you don't have good data on the engine under launch conditions...
Timing?
AFR?

thunderstruck507

iTrader: (18)

Sounds like the converter is too tight down low and the big cam doesn't like it.