D-1sc with stock bottom end
How much timing is the car running? If he hasnt changed his tuning any since tuning my car, expect a blown head gasket soon. I bought my car out of St Louis and the tuning was done by him. Blew a head gasket the 2nd day I had it b/c the timing was 24* on pump gas with no alky/etc(CR~9.8:1). Just a heads up for ya though. Nice track time also....
Originally Posted by onefastss223
How much timing is the car running? If he hasnt changed his tuning any since tuning my car, expect a blown head gasket soon. I bought my car out of St Louis and the tuning was done by him. Blew a head gasket the 2nd day I had it b/c the timing was 24* on pump gas with no alky/etc(CR~9.8:1). Just a heads up for ya though. Nice track time also....
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
Originally Posted by d-1sc408
23 degrees of timeing on pump gas
If it stays together long enough I'd be back at the tuner looking for a fatter AFR or adding meth (better, octane value + low IATs) and wanting that timing pulled back.
I'm not trying to sound preachy, but that has to be on the most ragged of edges right now unless that wideband on the dyno is off.
Last edited by Frost; Jul 28, 2007 at 01:49 AM. Reason: word left out
Originally Posted by Frost
A 12:1 AFR and 23degrees on pump gas and NO meth? I bet it does run strong, that's waayyyy past where I would push it. With no meth a lil heavier AFR would hold off knock easier... That setup may make good power through a pull of 1 gear on a dyno, but putting all 4 gears together like a track pass?? High IATs, high compression, and too much timing for even really a lower SCR than you have = borrowed time.
If it stays together long enough I'd be back at the tuner looking for a fatter AFR or adding meth (better, octane value + low IATs) and wanting that timing pulled back.
I'm not trying to sound preachy, but that has to on the most ragged of edges right now unless that wideband on the dyno is off.
If it stays together long enough I'd be back at the tuner looking for a fatter AFR or adding meth (better, octane value + low IATs) and wanting that timing pulled back.
I'm not trying to sound preachy, but that has to on the most ragged of edges right now unless that wideband on the dyno is off.
11 Second Club
Joined: Oct 2007
Posts: 429
Likes: 1
From: Columbus, OH
Good Times on 10 pounds of boost.. I just bought a d1sc car- 01 ss (stock bottom end)cam, ported heads, intake, etc.. twin intercooled. conservative 7.88 pounds. moser 12 bolt, bla bla.. owner ran once at track ran 11.14 @129 with a 2.45 60 foot.. ya he dont know how to drive.. should be a 10.40-10.60 car.. ? hope??
Its definitely going to pop, matter of when not if.
It comes on really late in the torque curve so that helps it a bit but
8 lbs of boost, pump gas and alot less timing than that is what we do and made 550/500 on stock longblock trapped 130, and made 630-640 with about 10 degrees less than what you have and full point richer almost. It survived about 70 pulls on our loaded Mustang dyno (you get away with ALOT on a dynojet) and beating alot on the street and road course. A blower car will pick up considerably leanign it out and giving it timing, but its not going to treat you right for long. Safen it up a bit and enjoy it much longer!
big block yeah Id expect low to mid 10s out of it, ifthe torque curve is healthy near 135 mph traps
It comes on really late in the torque curve so that helps it a bit but
8 lbs of boost, pump gas and alot less timing than that is what we do and made 550/500 on stock longblock trapped 130, and made 630-640 with about 10 degrees less than what you have and full point richer almost. It survived about 70 pulls on our loaded Mustang dyno (you get away with ALOT on a dynojet) and beating alot on the street and road course. A blower car will pick up considerably leanign it out and giving it timing, but its not going to treat you right for long. Safen it up a bit and enjoy it much longer!
big block yeah Id expect low to mid 10s out of it, ifthe torque curve is healthy near 135 mph traps
Its definitely going to pop, matter of when not if.
It comes on really late in the torque curve so that helps it a bit but
8 lbs of boost, pump gas and alot less timing than that is what we do and made 550/500 on stock longblock trapped 130, and made 630-640 with about 10 degrees less than what you have and full point richer almost. It survived about 70 pulls on our loaded Mustang dyno (you get away with ALOT on a dynojet) and beating alot on the street and road course. A blower car will pick up considerably leanign it out and giving it timing, but its not going to treat you right for long. Safen it up a bit and enjoy it much longer!
big block yeah Id expect low to mid 10s out of it, ifthe torque curve is healthy near 135 mph traps
It comes on really late in the torque curve so that helps it a bit but
8 lbs of boost, pump gas and alot less timing than that is what we do and made 550/500 on stock longblock trapped 130, and made 630-640 with about 10 degrees less than what you have and full point richer almost. It survived about 70 pulls on our loaded Mustang dyno (you get away with ALOT on a dynojet) and beating alot on the street and road course. A blower car will pick up considerably leanign it out and giving it timing, but its not going to treat you right for long. Safen it up a bit and enjoy it much longer!
big block yeah Id expect low to mid 10s out of it, ifthe torque curve is healthy near 135 mph traps
I have to chime in with the others that have their doubts that his motor will last. I have seen too many guys with great "safe" setups, and tunes time and time again on the stock bottom ends blow their motors by putting a forced induction application on with anything over 6#'s of boost.
These cars came with a high CR, and non-forged internals from the factory, even if you do all the supporting mods like a great fuel system, methanol injection, intercoolers, good safe dyno tune, its only a matter of time before you'll need a rebuild. It might make it 25,000 miles, or it might make it 2500 miles, but either way you are putting boost on a motor that just was not meant to take it from the factory, and something will give sooner or later.
Even with just 6#'s of boost, I highly doubt you'd see the same mileage out of the motor that you would if you stayed N/A.
I hope you proove me wrong though and your car will still be pumping out those numbers, and times with the stock bottom end for years to come. Good luck man.
These cars came with a high CR, and non-forged internals from the factory, even if you do all the supporting mods like a great fuel system, methanol injection, intercoolers, good safe dyno tune, its only a matter of time before you'll need a rebuild. It might make it 25,000 miles, or it might make it 2500 miles, but either way you are putting boost on a motor that just was not meant to take it from the factory, and something will give sooner or later.
Even with just 6#'s of boost, I highly doubt you'd see the same mileage out of the motor that you would if you stayed N/A.
I hope you proove me wrong though and your car will still be pumping out those numbers, and times with the stock bottom end for years to come. Good luck man.