bad results bad bad!!
hey hark maybe its the tranny with all my mods my car dynoed 309rwhp and 363tq. my tranny just went out and im thinkin even though it hadnt been causing me much problems as far as drivability it just wasnt performing how it should have. i think i might have been losing way too much power through the tranny. im getting a fully built one soon hopefully this will fix my low numbers and bad track times (13.6 1/4 tire spin/hitting rev limiter).
Well I noticed today my RPMS were hovering(the needle was jumping slightly) at 3k at 60mph!! Converter obviously isnt locking, The car smells of gas bad too. Running rich with the 50lb injectors? 
Originally Posted by Hark_Z
Well I noticed today my RPMS were hovering(the needle was jumping slightly) at 3k at 60mph!! Converter obviously isnt locking, The car smells of gas bad too. Running rich with the 50lb injectors?
yeah keep an eye on that freakin tranny man. my car started to rev way too high before the car would pick up speed and it caused my car to start to over heat. im really hoping for 12s with the new tranny, radials, and converter. if i dont get 12s im gonna seriously be pissed.
Originally Posted by Hark_Z
Either way, a Heads/Cam Kit NEEDS a tune. The stock computer cannot adjust to that kind of change by itself.
Not to mention the little things, like new springs, rockers, lifters etc.
Also, 58MM is alot for an LT1. I would suggest 52MM with the proper injectors.
Im not saying 58MM wont work, but I wouldnt use something like that unless I had a S/C or a massive heads and cam kit.
_________
You need to check you Stall. Try and eliminate all other possibilities too that you think might cause such a loss of power.
I think you have an improper/insuffecient air-fuel ratio,(tune) and your stall w/o a tune isn't helping.
( On a side note, I have heard of weak transmissions/rear's sparking the same kind of results.
Best of Luck Hark.
Should have bought a Vigilante
Originally Posted by burnzilla
I think youre having problems with your stall. Not to mention, I think Fuddle is about to bite the dust.
Either way, a Heads/Cam Kit NEEDS a tune. The stock computer cannot adjust to that kind of change by itself.
Not to mention the little things, like new springs, rockers, lifters etc.
Also, 58MM is alot for an LT1. I would suggest 52MM with the proper injectors.
Im not saying 58MM wont work, but I wouldnt use something like that unless I had a S/C or a massive heads and cam kit.
_________
You need to check you Stall. Try and eliminate all other possibilities too that you think might cause such a loss of power.
I think you have an improper/insuffecient air-fuel ratio,(tune) and your stall w/o a tune isn't helping.
( On a side note, I have heard of weak transmissions/rear's sparking the same kind of results.
Best of Luck Hark.
Should have bought a Vigilante
Either way, a Heads/Cam Kit NEEDS a tune. The stock computer cannot adjust to that kind of change by itself.
Not to mention the little things, like new springs, rockers, lifters etc.
Also, 58MM is alot for an LT1. I would suggest 52MM with the proper injectors.
Im not saying 58MM wont work, but I wouldnt use something like that unless I had a S/C or a massive heads and cam kit.
_________
You need to check you Stall. Try and eliminate all other possibilities too that you think might cause such a loss of power.
I think you have an improper/insuffecient air-fuel ratio,(tune) and your stall w/o a tune isn't helping.
( On a side note, I have heard of weak transmissions/rear's sparking the same kind of results.
Best of Luck Hark.
Should have bought a Vigilante
Personally, I wouldnt make an LT1 runs many RPMS. 6000 RPMS is more than enough for the LT Series engine.
In fact, high R's is one of the few things that can soften such a well built motor like the LT.
____
If its a high RPM cam, you should hit a powerband high up in your R's, and your PCM should be tuned to match your setup.
Any heads/cam car will lose MPG, youre taking in alot more air, and more air = more fuel.
___
And another side note...
if youre pushing 350 to the wheels give or take, with proper traction, that should be good for a low 12 second car.
Excellent advice. An LT4 Knock Module is a great mod when your running more than bolt ons on a LT1.
In fact, high R's is one of the few things that can soften such a well built motor like the LT.
____
If its a high RPM cam, you should hit a powerband high up in your R's, and your PCM should be tuned to match your setup.
Any heads/cam car will lose MPG, youre taking in alot more air, and more air = more fuel.
___
And another side note...
if youre pushing 350 to the wheels give or take, with proper traction, that should be good for a low 12 second car.
Originally Posted by slick1851
Get a LT4 KM
TECH Junkie
Joined: Nov 2003
Posts: 3,265
Likes: 1
From: CHITOWN
Originally Posted by burnzilla
Personally, I wouldnt make an LT1 runs many RPMS. 6000 RPMS is more than enough for the LT Series engine.
In fact, high R's is one of the few things that can soften such a well built motor like the LT.
____
If its a high RPM cam, you should hit a powerband high up in your R's, and your PCM should be tuned to match your setup.
Any heads/cam car will lose MPG, youre taking in alot more air, and more air = more fuel.
___
And another side note...
if youre pushing 350 to the wheels give or take, with proper traction, that should be good for a low 12 second car.
In fact, high R's is one of the few things that can soften such a well built motor like the LT.
____
If its a high RPM cam, you should hit a powerband high up in your R's, and your PCM should be tuned to match your setup.
Any heads/cam car will lose MPG, youre taking in alot more air, and more air = more fuel.
___
And another side note...
if youre pushing 350 to the wheels give or take, with proper traction, that should be good for a low 12 second car.
Depends on what the guys setup is, How well ported the heads are and what cam hes running.
If hes running a cam and head setup that wants to rev it will still make power up top, but that stock bottum end isnt going to be happy with the Revs.
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Verdad Gallardo The cam makes all its power up high but the shift points are at 6400 so its not that drastic. I've heard LT4 KM's were jokes? This is why its frustrating becuz all the parts are brand new. New injectors, the MSD Opti I have has less than 400 miles on it too btw. I also just purchased the stall everyone had great things to say about Fuddle;now people question Fuddle. Cant win for losing.
TECH Junkie
Joined: Nov 2003
Posts: 3,265
Likes: 1
From: CHITOWN
Yeah its def a pain in the *** when you cant track down problems, Knock Senors are also a major pain.
I dont really think they are a joke, the LT4 vettes drive train arent as quit so they switched to the LT4KM.
I dont really think they are a joke, the LT4 vettes drive train arent as quit so they switched to the LT4KM.
Originally Posted by buffman
and I'll throw $10 down on the Table that th intake bores stock are 54mm..
TY
The setup should make good TQ from about 3000rpm to mid 6's. If you had a CC306 in there you would notice the difference big time with them both tuned. The setup is pretty close to a LE3 head and LE2 cam. Make sure you have no exhaust leaks and fix the converter. The injectors are ok, but it needs to be tuned without exhaust leaks.
Bret
Bret
Originally Posted by speed_demon24
interesting. could have sworn they were bigger, but will make a note of it. Im still not going to pay you
Originally Posted by buffman
interesting. could have sworn they were bigger, but will make a note of it. Im still not going to pay you
I was really hoping for that $10. 
Originally Posted by speed_demon24
Your going to be hearing from my laywer monday. I was really hoping for that $10.
I was really hoping for that $10. Im so broke right now it's not even funny. I hate college tuition time and those damn book prices.
Whether or not the injectors are overkill for the motor, as long as they're tuned they're fine. But if he's indicated he's smelling fuel, then something isnt right...
