My ST Motorsports 298 Stroker
07-21-2008, 01:18 PM
#1
4th Gear Member
Thread Starter
Join Date: Jul 2007
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Posts: 1,062
My ST Motorsports 298 Stroker
Details:
298 ci stroker, Kellog Crank, Scat Rods, JE Pistons. CR approx 9.25:1
60# injectors
Diamond Monoblade TB (the small version to mount to stock Whipple manifold) & running the stock Whipple air tube
8 rib pulley kit with Frankentensioner, running 3.0" pulley.
ClutchMasters sintered Iron clutch (pedal lighter then stock, though it can rattle a bit, and engagement is fast. its breaking in nicer now though....which is good)
Comp Cam Limiters (I feel they will prevent excessive VCT lash if it occurs, reducing force and damage to cam/phaser pin.)
ARH LT's with catted X
On the dyno, in the heat and high humidity it showed 507rwhp, 497rwtq.
16.25* timing (nice and conservative) and showing up to 13.5psi boost. After break-in (the 1800 mile drive home) boost shows a bit less (11-12.5 psi)
Adam @ ST is working on fixing a couple tune "glitches" (O2 sensor is acting up, and I get some knock in the cool air here.....which is backwards to what I think would happen. Though, did happen with the VMP tune if you guys remember that. Car ran lean in the cool air...so same thing might be happening. Its possible the cool air makes more of a difference then the change in altitude)
Any doubts on how fast the car is? I'll put those to rest right now: 4th gear roll 60-120mph, with an extra 400 pounds in the car (brother, luggage etc) vs a C6 Corvette resulted in the Vette losing by about 10 car lengths. Giggity!!
298 ci stroker, Kellog Crank, Scat Rods, JE Pistons. CR approx 9.25:1
60# injectors
Diamond Monoblade TB (the small version to mount to stock Whipple manifold) & running the stock Whipple air tube
8 rib pulley kit with Frankentensioner, running 3.0" pulley.
ClutchMasters sintered Iron clutch (pedal lighter then stock, though it can rattle a bit, and engagement is fast. its breaking in nicer now though....which is good)
Comp Cam Limiters (I feel they will prevent excessive VCT lash if it occurs, reducing force and damage to cam/phaser pin.)
ARH LT's with catted X
On the dyno, in the heat and high humidity it showed 507rwhp, 497rwtq.
16.25* timing (nice and conservative) and showing up to 13.5psi boost. After break-in (the 1800 mile drive home) boost shows a bit less (11-12.5 psi)
Adam @ ST is working on fixing a couple tune "glitches" (O2 sensor is acting up, and I get some knock in the cool air here.....which is backwards to what I think would happen. Though, did happen with the VMP tune if you guys remember that. Car ran lean in the cool air...so same thing might be happening. Its possible the cool air makes more of a difference then the change in altitude)
Any doubts on how fast the car is? I'll put those to rest right now: 4th gear roll 60-120mph, with an extra 400 pounds in the car (brother, luggage etc) vs a C6 Corvette resulted in the Vette losing by about 10 car lengths. Giggity!!
How are you liking Adams tune?
07-21-2008, 01:37 PM
#5
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Join Date: Jul 2007
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Posts: 1,062
RE: My ST Motorsports 298 Stroker
Adams tune was awesome in the heat. No knock, tons of torque etc. Right now I am running into some O2 sensor related codes (same sensor) P2196 and P0133. When I got into Canada my IAT's dropped from an average of 105-110* on the trip home, to 68*. Car would knock WOT, lower RPM, very similar to what the VMP tune did before the engine upgrade. With VMP's tune, we ended up adding 3% fuel to fix that.
Adam is working on a modified tune to address these problems. To top it off, he called me Sunday (I got back Saturday) to ask how it ran so that he could work on the tune. Swell guy!
I'm also thinking of getting it dynoed when Eric Brooks is in Edmonton. Can't hurt to have two tunes by two really good tuners. Be nice to see what she is pulling in the conditions I drive in as well.
Adam is working on a modified tune to address these problems. To top it off, he called me Sunday (I got back Saturday) to ask how it ran so that he could work on the tune. Swell guy!
I'm also thinking of getting it dynoed when Eric Brooks is in Edmonton. Can't hurt to have two tunes by two really good tuners. Be nice to see what she is pulling in the conditions I drive in as well.
07-21-2008, 02:11 PM
#6
5th Gear Member
Join Date: Jun 2007
Location: Orlando, FL
Posts: 2,276
RE: My ST Motorsports 298 Stroker
Congrats sounds like she is a beast. Good luck getting the tuning fixed.
I see 100+ degree IAT's all the time [:@]. I would kill for 68 deg.
have fun, and do me a favor. Humiliate the first new Camaro SS in Canada.
I see 100+ degree IAT's all the time [:@]. I would kill for 68 deg.
have fun, and do me a favor. Humiliate the first new Camaro SS in Canada.
07-21-2008, 02:19 PM
#8
4th Gear Member
Thread Starter
Join Date: Jul 2007
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Posts: 1,062
RE: My ST Motorsports 298 Stroker
ORIGINAL: MustangGT0405
Congrats sounds like she is a beast. Good luck getting the tuning fixed.
I see 100+ degree IAT's all the time [:@]. I would kill for 68 deg.
have fun, and do me a favor. Humiliate the first new Camaro SS in Canada.
Congrats sounds like she is a beast. Good luck getting the tuning fixed.
I see 100+ degree IAT's all the time [:@]. I would kill for 68 deg.
have fun, and do me a favor. Humiliate the first new Camaro SS in Canada.
