tuning help im lost here
tuning help im lost here 1997 s10 5.3l xer281 cam th350 3000 coan stall 410 gear 28" tire vic jr 650 demon 66 jet prime 68 sec jet no vac leaks
OK IT RUNS GREAT DRIVES GREAT REVS FREE GREAT AND BLOWS THE TIRES OFF FROM 20MPH
BUT FROM DEAD STOP AROUND 2400 RPM FLAT FOOT IT AND NOTHING(NO POWER NO SPIN) NO BOG NO NOTHING LET UP AND ROLL TO 20MPH FLAT FOOT IT AND INSTANT REV LIMIT
WHAT THE F*CK
I HAVE NEVER RAN INTO THIS BEFORE I HAVE OWNED 9SEC CAR ALL THE WAY TO 14 SEC CARS AND NEVER RAN IN TO THIS
I KNOW ITS WAY OVER CAMMED BUT I PLAN ON SPRAYING THE HELL OUT OF IT!
OK IT RUNS GREAT DRIVES GREAT REVS FREE GREAT AND BLOWS THE TIRES OFF FROM 20MPH
BUT FROM DEAD STOP AROUND 2400 RPM FLAT FOOT IT AND NOTHING(NO POWER NO SPIN) NO BOG NO NOTHING LET UP AND ROLL TO 20MPH FLAT FOOT IT AND INSTANT REV LIMIT
WHAT THE F*CK
I HAVE NEVER RAN INTO THIS BEFORE I HAVE OWNED 9SEC CAR ALL THE WAY TO 14 SEC CARS AND NEVER RAN IN TO THIS
I KNOW ITS WAY OVER CAMMED BUT I PLAN ON SPRAYING THE HELL OUT OF IT!
Maybe.. try the correct forum?? Likely get more hits.
"Next floor down"...
https://ls1tech.com/forums/pcm-diagnostics-tuning-7/
"Next floor down"...
https://ls1tech.com/forums/pcm-diagnostics-tuning-7/
I think the conversion section is the unofficial carb forum.
I'll try and help, not familiar with demon carbs, but at least it might start a dialog.
Do you have a wide band? Do you know if you are going rich or lean when this happens?
You don't mention your accell squirters. That would be my guess. What nozzles, cam and pump size are you running? Most guys run the bigger 50 cc booster on the primary side.
The off idle performance on my Holley is very sensitive to the accel pump cam. Make sure you have no gap in the linkage. You should see an nice solid shot with even the slightest touch of the throttle. The open plenum intake needs a cam with a rapid initial squirt. Holley says to moung it on #1 hole for motors like ours. Got this from the Holley site for #1 vs. #2 mounting hole
One other problem I once had was a leaking gasket on the accel squirter nozzle. This drained the gas out of the top of the squirter and would delay the shot on initial kick in.
Try reading through some of the carb setups in this sticky thread
https://ls1tech.com/forums/conversio...-dist-ls1.html
last guess is how old is the Demon? Quite a number of guys claim their new demons were full of metal shavings out of the box. Make sure none of the passages are blocked with junk.
I'll try and help, not familiar with demon carbs, but at least it might start a dialog.
Do you have a wide band? Do you know if you are going rich or lean when this happens?
You don't mention your accell squirters. That would be my guess. What nozzles, cam and pump size are you running? Most guys run the bigger 50 cc booster on the primary side.
The off idle performance on my Holley is very sensitive to the accel pump cam. Make sure you have no gap in the linkage. You should see an nice solid shot with even the slightest touch of the throttle. The open plenum intake needs a cam with a rapid initial squirt. Holley says to moung it on #1 hole for motors like ours. Got this from the Holley site for #1 vs. #2 mounting hole
Placing the screw in position #1 activates the accelerator pump a little early, allowing full use of the pump’s capacity. Generally, vehicles which normally run at lower idle speeds (600 or 700 RPM) find this position more useful because they can have a good pump shot available coming right off this relatively low idle. Positions #2 and #3 delay the pump action, relatively speaking. These two cam positions are good for engines that idle around 1000 RPM and above.
Try reading through some of the carb setups in this sticky thread
https://ls1tech.com/forums/conversio...-dist-ls1.html
last guess is how old is the Demon? Quite a number of guys claim their new demons were full of metal shavings out of the box. Make sure none of the passages are blocked with junk.
What are you running for igninion? An MSD box? Whats your timing map like? I have to agree with Pop though, it does sound like a missing fuel enrichment, but it should bog without fuel, so maybe not enough low RPM timing is losing too much bottom end torque.
Like Pop said, you should use a wide band to check the fuel
Like Pop said, you should use a wide band to check the fuel
thanks guys! i have 0 bog none at all i dont get it? its just flat(like a 300,000 mile 2.2l) and then around 2900 or so it will just blow the tires off,
i have used any thing from 25 to 37 shooters and moved the cam in every spot and also changed the cam to a pink one(fast shot).
i have used any thing from 25 to 37 shooters and moved the cam in every spot and also changed the cam to a pink one(fast shot).
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo after some adjusting i went the other way and jetted it to 80's frt an back and WOW GETTING SOMETHING DIFFERENT FOR ONCE! so after resetting the idle airs to 1 turn each and the shooters at 28 and 31 and 74 prime and 80 rear its coming around! but now the plugs look rich as hell (turning a mild brown) all the up the radius? and with the 74 jet i have a little stumbling till its moving(very little) so i think i need to now take a trip to the dyno and beat it now that it close and see what the A/F SAYS!
THANKS GUYS
THANKS GUYS
after some adjusting i went the other way and jetted it to 80's frt an back and WOW GETTING SOMETHING DIFFERENT FOR ONCE! so after resetting the idle airs to 1 turn each and the shooters at 28 and 31 and 74 prime and 80 rear its coming around! but now the plugs look rich as hell (turning a mild brown) all the up the radius? and with the 74 jet i have a little stumbling till its moving(very little) so i think i need to now take a trip to the dyno and beat it now that it close and see what the A/F SAYS!
THANKS GUYS
THANKS GUYS
If i had it to do again i would have just bought a car intake and hp tuners and a turbo! O WAIT IM GOING TO DO THAT ANYWAY! LOL CARBS ARE GREAT IF YOU REALLY KNOW THEM AND I THOUGHT I DID TILL I MEET THIS ONE! LOL