We've finally finished installing the turbo kit and tuning on my 1998 Trans Am. It was tuned by D&G Dyno in Hennessey, OK on a Mustang dyno. I thought he did a phenomenal job tuning the car on everything from WOT to cruising drive-ability. I'd also like to thank Huron Speed for their awesome customer service. The car has just over 75k miles with an untouched bottom end.

VIDEO:
*Please excuse my granny shifting. I was doing my best to not break the rear end before I loaded it back on the trailer.

It left the dyno at 10psi and 614rwhp on E85 I think it did alright for a stock 806 headed car with an off-the-shelf Torquer V3 cam from TSP.

Mods:

Engine:
Stock bottom end 75k mile 1998 LS1
Stock heads with PRC .650 dual springs, TSP hardened pushrods
TSP Torquer V3 cam 111 LSA
JPR chain
TSP ported LS6 oil pump
Weiand intake manifold

Transmission:
A4 to M6 swap
Stock T56
Monster Level 2 clutch
Tick master
Tick speed bleeder
B&M Ripper shifter

Rear end:
Stock 10 bolt
3.73 gears

Turbo system:
Huron Speed truck manifold kit
44mm TiAL MVR wastegate
50mm XSpower BOV
Turbonetics TC78 .96 A/R


Fuel:
Stock regulator/lines
Siemens 80lb injectors
MightyMouse-mod twin Walbro 255s
Racetronix hotwire upgrade
E85

Suspension:
UMI adjustable torque arm with relocation bracket
UMI drive shaft loop
UMI adjustable lower control arms
UMI control arm relocation brackets
UMI adjustable panhard bar
UMI solid motor mounts
Tuned by D&G dyno in Hennessey, OK

 

Awesome numbers man, an idea what kind of timing you're running?

 

assuming you have a 99+ computer in there?

 

Great numbers from the stock '98 short block! Having a '98 with 806 heads myself, I always wondered what a turbo would be like on my car. At 615 to the rear tires that 10-bolt won't last long but I'm sure it'll be a blast on the street.

 

Haven't you heard, the stock 10 bolts are good for at least 1,000 rwhp

Nice results OP. The cool thing is you have room to grow in the future.

 

Let's see the dyno graph.

+1 for the timing

 

I'm curious to see what you're running for timing, I'm heading to the dyno here soon and have a similar setup but pushing 15psi with meth. Hoping to get close to the 700whp mark

 

I can't remember off the top of my head. It wasn't very high. I told him I wanted a safe tune and that's what I got. The e85 blend I've been running is approximately 72%.

No, I'm still running the stock 98 computer on a 2 bar speed density tune.

It's a ton of fun on the street. I really need to get an S60/9in as my next mod.

Thanks, yep, I plan to turn it up more in the future, but for now I'm pretty happy with it.

I'll get the dyno graph as soon as I can. I left it at my parents house and I'm currently 3 hours away for school.

 

I'll let you know as soon as I can. Good luck with your setup. It sounds pretty nasty.

 

Thanks man! I'm hoping to make it to the dyno this weekend so we shall see. I'll be honest if I don't see 700 i'll be disappointed

 

What heads are you running? Stock bottom end? I'm running the same turbo and shooting for the 800rwhp neighborhood with 15lbs and a 6 speed, but will have a forged 370 with cnc ported LSA heads. You should see 700 without too much of a problem...

 

Stock 241 heads, Stock LS6 with ARP hardware throughout. A forged iron build is in my plans for this winter as well

 

Very nice! What was the tq number? Might also be time to consider ditching that Monster stage 2 before it dies so you can get a little money back out of it.

 

Nice man. I can't wait to get home and throw the kit I have waiting for me on my TA

 

I am interested to see your dyno graph as well. I am trying to understand if the rear mount setup's have certain horsepower and torque curve characteristics. I have changed the turbo on my car and the dyno graph (aside from a bump in poiwer) shows a similar hp/tq curve.

 

Good numbers for the boost! Great tuning work.

 

Just wondering if the V.3 cam is leaving some performance on the table? I thought cams like that didn't do well with boost because of the LSA. I am only asking because my cam in kinda the same way.

 

I would venture to say that with an optimal boost cam, there would be some gains. I'm also sure an optimal boost cam would assist with making equal or more HP/TQ at a lower boost level, given the valve events of the cam.

 

Missed this thread before! Great results, thanks for posting! Also thanks for the nice words ENJOY!

 

OMFG on the 10 bolt. Nice numbers on the stock bottom end. What RPM range are you in when it builds reasonable boost (8-10 or so)?