lncboytre_d

Recently I went from a 150 shot running 11.4 @120 to a 200 shot and can only best a 11.31 @ 121. My 60's are all over the map from 1.57-1.89. I am trying to break the 10's with the 200 but now I sure somethig is not quite right. I am running at staggering 3,700lbs, so I know that isnt helping. On the 150 I was running running at 29* WOT (pulling 6* from 35), and pulling 9* on the 200 shot putting me at 26*. My runs were more consistent with the 150 shot. I added timing up to 28.5, but that slowed me down on the mph. Any suggestions?
LT1 355, 3.23 gears, 3600 stall, all stock suspension, AFR 195 heads w/ cc306



200 Shot with 9* pulled
72N 48F

Fbodyjunkie06

iTrader: (10)

I recently found I had a bottle pressure issue and it was keeping my gains from being what they should.

Is there a wideband in the car?

lncboytre_d

Yes, lol but i never looked at it until today....its at 12.6 n/a not sure on spray. when at the track i am only focused on getting down the track.

87silverbullet

iTrader: (11)

Are you sure that extra 50 isn't the straw that broke the camel's back as far as the converter is concerned? It could be blowing thru a little causing minimal gain.

camscam02

iTrader: (21)

you can't read the fuel on that plug because of all the run time on it. Also can't compare times if the sixty foot isn't the same. Huge difference

lncboytre_d

What is actually meant when you say "blowing through the converter"? I hear the phrase alot just looking on some insight.

firehawk 385

Too much % converter slippage

lncboytre_d

What % should I be at?

87silverbullet

iTrader: (11)

There have been some guys here who have reported less than 6% slip

Fbodyjunkie06

iTrader: (10)

A lot of different cars need different slip.

Anything over 12-15% I'd consider excessive.

Sofls1

iTrader: (16)

If your car is spinning that much I wouldn't touch the tune. Get your car to work, then see what you got-

Get you some lcas, make sure your ic is right, get an arb, and a good tq arm and that thing consistent in the 60- once your there, then start looking at your tune.

lncboytre_d

Will do. Thanks for the help.

TSAEB

iTrader: (5)

Just wondering what plate and intake manifold? Have you checked all the plugs? I see lt1 guys worry about 1 and 8 cylinder when spraying above 200+ with lt1 manifold.

lncboytre_d

It's a Nitrous Outlet Plate System with the stock intake. My 8 cylider is fine, it's the 1 hole that seems to get hotter than the rest. But even it looks "ok".