Will it run 10's
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
Will it run 10's
I have an 05 C6 and blew up the motor on the dyno... I'm getting the following for it an 05 C6 (A4)
I was hoping to run in the high 10 sec zone..so I could run in an 11.0 index class.. I "Think" I should have a 5 pt roll bar installed now while its in the shop as it will be needed for anything faster than 11.5 and I was close to that with the stock size motor.
Here is what I'm getting....
An LS2 block and a 4" stroker crank = 403 ci motor with the following..
Kooks long tube headers
Fast-102 intake (ported)
Ported 243 heads
A cam (not CRAZY aggressive) but enough to take advantage of the extra cubic in. I'll be getting from the stroker crank...
Vararam CAI
FTI 2800 converter
MT Drag Radials
With the original motor 364 ci and just headers, & converter and a Tune it ran a best of 11.61 @ 118 mph
I was hoping to run in the high 10 sec zone..so I could run in an 11.0 index class.. I "Think" I should have a 5 pt roll bar installed now while its in the shop as it will be needed for anything faster than 11.5 and I was close to that with the stock size motor.
Here is what I'm getting....
An LS2 block and a 4" stroker crank = 403 ci motor with the following..
Kooks long tube headers
Fast-102 intake (ported)
Ported 243 heads
A cam (not CRAZY aggressive) but enough to take advantage of the extra cubic in. I'll be getting from the stroker crank...
Vararam CAI
FTI 2800 converter
MT Drag Radials
With the original motor 364 ci and just headers, & converter and a Tune it ran a best of 11.61 @ 118 mph
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
Same as you having a new Vette and asking ME to make a run ALL OUT.. at the track and I would have to pay if I broke something... I just wouldn't drive your car..
A motor can blow up any anytime if you spinning it at close to 7000 rpm..
My car had 45000 miles on it and was raced almost EVERY weekend..since 2007 ..1/4 mile at a time.. ***** TO THE WALL!!
S*** Happens.. & I do NOT hold the shop responsible IN ANY WAY.. They were doing EXACTLY what I requested...
Here is a short video of what happened..
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,403
From: Bethesda MD
That was my first thought too.
You probably have enough motor if the port job, compression, and cam are well matched. If you don't make it, the first place I'd look is the converter size. If it truly stalls just 2800 on your motor, 10s will be a challenge. If it stalls 2800 on a bone stock LS2, it may stall 3200 behind a big cube motor with headers and a Fast IM.
I'd add an ATI super damper 10% UD pulley to your motor too.
You probably have enough motor if the port job, compression, and cam are well matched. If you don't make it, the first place I'd look is the converter size. If it truly stalls just 2800 on your motor, 10s will be a challenge. If it stalls 2800 on a bone stock LS2, it may stall 3200 behind a big cube motor with headers and a Fast IM.
I'd add an ATI super damper 10% UD pulley to your motor too.
Last edited by Ragtop 99; Nov 11, 2013 at 03:15 PM.
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
That was my first thought too.
You probably have enough motor if the port job, compression, and cam are well matched. If you don't make it, the first place I'd look is the converter size. If it truly stalls just 2800 on your motor, 10s will be a challenge. If it stalls 2800 on a bone stock LS2, it may stall 3200 behind a big cube motor with headers and a Fast IM.
I'd add an ATI super damper 10% UD pulley to your motor too.
You probably have enough motor if the port job, compression, and cam are well matched. If you don't make it, the first place I'd look is the converter size. If it truly stalls just 2800 on your motor, 10s will be a challenge. If it stalls 2800 on a bone stock LS2, it may stall 3200 behind a big cube motor with headers and a Fast IM.
I'd add an ATI super damper 10% UD pulley to your motor too.
I was told with the 403 and other mods (headers, cam, FAST 102, the original 2600 converter may go as high as 3200....
I'm trying to save a few $$ after emptying the bank account on the 403 motor, porting the heads & intake, & cam, valve springs new push-rods etc.. I went TOP SHELF for the crank, pistons and rods..all forged..and was told the converter SHOULD stall higher than 2800 when I was stock ci. & stock cam and heads..
They said it should be closer to 3200....hope they are correct..
The reason I left the 2800 in was it would be a softer hit on the rear end (3.15) stock 05 Vette rear... Also I drive it to & from the track (100 miles each way)
Le Mans Master
Joined: Aug 2007
Posts: 6,473
Likes: 297
From: Orange Park FL
[QUOTE=jpee;1585403598]I tend to agree with you.. I "KNOW" for sure it stalled at 2800 with the stock 364 ci motor and stock intake...
I was told with the 403 and other mods (headers, cam, FAST 102, the original 2600 converter may go as high as 3200....
I'm trying to save a few $$ after emptying the bank account on the 403 motor, porting the heads & intake, & cam, valve springs new push-rods etc.. I went TOP SHELF for the crank, pistons and rods..all forged..and was told the converter SHOULD stall higher than 2800 when I was stock ci. & stock cam and heads..
They said it should be closer to 3200....hope they are correct..
The reason I left the 2800 in was it would be a softer hit on the rear end (3.15) stock 05 Vette rear... Also I drive it to & from the track (100 miles each way)[/QUOTE]
Makes sense
I was told with the 403 and other mods (headers, cam, FAST 102, the original 2600 converter may go as high as 3200....
I'm trying to save a few $$ after emptying the bank account on the 403 motor, porting the heads & intake, & cam, valve springs new push-rods etc.. I went TOP SHELF for the crank, pistons and rods..all forged..and was told the converter SHOULD stall higher than 2800 when I was stock ci. & stock cam and heads..
They said it should be closer to 3200....hope they are correct..
The reason I left the 2800 in was it would be a softer hit on the rear end (3.15) stock 05 Vette rear... Also I drive it to & from the track (100 miles each way)[/QUOTE]
Makes sense
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Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
The LS2 has a 24 tooth relucter and the LS3 has a 54 tooth.. IF I went to a LS3 I'd have to get a new computer to match the 54 relucter thats on the LS3's...
Seeing as I'm going to a stroker motor (403 ci) Both the shop, & myself thought it would be less of a problem... Right now I'm hoping to run high 10's sec with the 403.. I also have a FAST 102 intake manifold, 243 heads that fit an LS2... etc..
I'm trying to make it as simple as I can..and avoid having to buy "anything" that I don't have to....
Also if it runs 11.0 that will fit the class fine, & anything faster than 11.0 is all a bonus
Seeing as I'm going to a stroker motor (403 ci) Both the shop, & myself thought it would be less of a problem... Right now I'm hoping to run high 10's sec with the 403.. I also have a FAST 102 intake manifold, 243 heads that fit an LS2... etc..
I'm trying to make it as simple as I can..and avoid having to buy "anything" that I don't have to....
Also if it runs 11.0 that will fit the class fine, & anything faster than 11.0 is all a bonus
Last edited by jpee; Nov 11, 2013 at 04:50 PM.
Team Owner
Joined: Apr 2013
Posts: 26,241
Likes: 4,360
From: Chirper Island
I try to learn as much as I can , so excuse my questions. I'm not terribly experienced mechanically, but not clueless, either. This summer, I had an LS3 put in my 2005 A4 Vert, and I don't think they had to replace the computer. It was a crate engine, and they put in a beefier radiator. It runs wonderfully.
lisa
lisa
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
I try to learn as much as I can , so excuse my questions. I'm not terribly experienced mechanically, but not clueless, either. This summer, I had an LS3 put in my 2005 A4 Vert, and I don't think they had to replace the computer. It was a crate engine, and they put in a beefier radiator. It runs wonderfully.
lisa
lisa
I'm not really "up" on that stuff either.. but I know you have to have the correct relucter (24 or 54) that goes with the motor you put in...
glad you didn't have any problims...what caused you to put in a new crate motor in your 05...I personally prefer my 05 to a newer car as the (A4) transmission is better for the drag strip than the (A6) which came out in 2006..
Besides my 05 is in perfect condition, and I love the color (LMB
How many miles do you have on the car, & how many miles have you put on the new motor...
I did get a price on a new Crate Motor... complete from the intake manifold to the oil pan was $10,400 installed at the local Chevy dealership...
Team Owner
Joined: Apr 2013
Posts: 26,241
Likes: 4,360
From: Chirper Island
I love the color, too! Mine's hardly in pristine condition, though. She has a bad case of road rash in the front, but her left side and back look great, because she's been hit 3 times. 
It developed a lifter problem a couple of years ago. mrowc6 and I were going to let it go as long as possible before doing anything, because we figured why rebuild it on a high-milage engine for almost the same price as replacing it? It was noisy, but didn't seem to lose any power (for our somewhat aggressive street use, anyway). The air conditioner died and a few other things under the hood had to be addressed, so we decided to go for it all at once rather than wait. That was at 175,000 mi. The LS3 was almost the same price as an LS2, so we decided to do that.
It was embarrassing to sit at a light and listen to it, anyway.
Thank goodness, we have B&B Bullets to drown out the under-hood sound. 
The only "issue" we had on the new engine was the fuel/air ratio right at the beginning. It would die on a hard stop (especially going from high rpms to stop). A few times fiddling with it, once I explained that we "manually" shift, set that right. Have ~~8,500 mi on the new engine (183,500 total). It is a noticeable difference in many ways.
She's a tough old broad, and I love her!
lisa
It developed a lifter problem a couple of years ago. mrowc6 and I were going to let it go as long as possible before doing anything, because we figured why rebuild it on a high-milage engine for almost the same price as replacing it? It was noisy, but didn't seem to lose any power (for our somewhat aggressive street use, anyway). The air conditioner died and a few other things under the hood had to be addressed, so we decided to go for it all at once rather than wait. That was at 175,000 mi. The LS3 was almost the same price as an LS2, so we decided to do that.
It was embarrassing to sit at a light and listen to it, anyway.
Thank goodness, we have B&B Bullets to drown out the under-hood sound. The only "issue" we had on the new engine was the fuel/air ratio right at the beginning. It would die on a hard stop (especially going from high rpms to stop). A few times fiddling with it, once I explained that we "manually" shift, set that right. Have ~~8,500 mi on the new engine (183,500 total). It is a noticeable difference in many ways.
She's a tough old broad, and I love her!
lisa
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
I tend to agree with you.. I "KNOW" for sure it stalled at 2800 with the stock 364 ci motor and stock intake...
I was told with the 403 and other mods (headers, cam, FAST 102, the original 2600 converter may go as high as 3200....
I'm trying to save a few $$ after emptying the bank account on the 403 motor, porting the heads & intake, & cam, valve springs new push-rods etc.. I went TOP SHELF for the crank, pistons and rods..all forged..and was told the converter SHOULD stall higher than 2800 when I was stock ci. & stock cam and heads..
They said it should be closer to 3200....hope they are correct..
The reason I left the 2800 in was it would be a softer hit on the rear end (3.15) stock 05 Vette rear... Also I drive it to & from the track (100 miles each way)
I was told with the 403 and other mods (headers, cam, FAST 102, the original 2600 converter may go as high as 3200....
I'm trying to save a few $$ after emptying the bank account on the 403 motor, porting the heads & intake, & cam, valve springs new push-rods etc.. I went TOP SHELF for the crank, pistons and rods..all forged..and was told the converter SHOULD stall higher than 2800 when I was stock ci. & stock cam and heads..
They said it should be closer to 3200....hope they are correct..
The reason I left the 2800 in was it would be a softer hit on the rear end (3.15) stock 05 Vette rear... Also I drive it to & from the track (100 miles each way)