When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Sharing my journey. It’s been a while since I have done anything note worthy on my car.
I finally upgraded my engine so I could pulley down my D1SC and make more power on my 2000 Trans Am convertible street car. I bought the car new and have been “investing” in it for a very long time. I ended up going with a long block that was recommended by TSP as being able to handle 800 RWHP. Here are some of the specifics for the new stuff.
-TSP 416 resleeved aluminum gen 4 5.3L
-TSP/Mahle -10cc dish pistons
-PRC aftermarket LS3 heads
-232/248 .629/.615 116 LSA 114 ICL
-LS3 intake
-Nick Williams 92mm TB
-FIC 1000cc injectors
-Holley LS Hi-Flow Fuel Rails
-Chrs1313 dual 450 fuel pumps
-Racetonix fuel line kit
-Procharger new spring loaded tensioner
-Powerbond 3.4” pulley
-McLeod RXT 1200
Existing stuff
-Twin 4.5” Procharger intercoolers
-Proflow BV
-Strange 60 with 4.1 (truetrac)
-Built T56
-Wolf 6 point roll bar
-Alkycontrol meth injection
-Koni shocks, BMR, UMI, Spohn suspension components
The car made 693/688 on 92 Octane and Meth. I had 17” x 11” widened WS6 rims with 28” MT (305/45R45) on the car with 1.25” hub centric wheel spacers. HP peaked at about 5300 RPM so the tuner set the rev limiter at 6400 RPM because it was not making any more power. They have suggested that a FMIC and E85 will allow for more gains.
I had all the new stuff installed by Carbconn in Kirkland, WA. Happy holidays!
Something is seriously off if you're max HP is at 5300 with that setup. Max power is Max rpm because that is also max boost. You either need a better tuner or need someone to look over the setup. Something is not right. You can even see it in the oscillation of the Dyno pull and that's set to max smoothing.
D1sc is a little undersized on a 416. Try a large FMIC and a bigger crank pulley like the 8.25".
Originally Posted by Bob@BruteSpeed
Those 4.5" twin intercoolers have their hands full, the front mount would give you more boost up top and additional hp. Bob
Thank you both. The intercoolers being the bottle neck to more power seems to be the consensus. IAT’s went through the roof above 6000RPM resulting in diminishing returns.
What about going with e85? My tuner was really encouraging the switch along with the FMIC.
Thank you both. The intercoolers being the bottle neck to more power seems to be the consensus. IAT’s went through the roof above 6000RPM resulting in diminishing returns.
What about going with e85? My tuner was really encouraging the switch along with the FMIC.
E85 is a great way to go provided you have easy access to E85, and you have the fuel system to support it. Bob
__________________ ATI ProCharger and Moser Sales 260 672-2076
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.
416 D1SC Trans Am 
