I'd say that with the amount of hp out of my TT it's probably impossible to get that much without a humongous camshaft and humongous everything else. John Vittone offered to pull a vlave cover and dial guage the valve lift, but I can do that at home. There is almost nothing about the engine that I know. Information I got was "It gains 200whp if you remove the airfilters you know" When I run out of other projects I'll probably pull the engine down and see if there'll be a big advantage to replacing my JM heads with a set of ported GTSR heads and check the cam then. Next couple months I'll pull the pan and check the rod bearings in the bottom end. Yep, #3 and #4 at the very least. I am also interested in whether the crankshaft has your modifications of a GTSR crank and what brand H beam rods are in it. It'll give me an opportunity to double check that it has a swinging pickup and trap doors in the oil pan as well.
Even K&N air filters can't support 1500+whp of airflow without it being a major restriction. I understand that when YOU instal 1 of my airfilters (they are 9" long x 5 or 6" wide) onto your Paxton it's going to losee you at least 50whp at 850whp ... Mine also uses convoluted 3" mandrel bent tubing to get the air from the bottom of the car into the Turbos past the headers which at 26psi go cherry red after 30 seconds ... There is a thread(s) on my car on Viper Alley and the filter restriction was posted at zero loss (Must be at pump gas 10psi boost).I bought the car from a big lawyer in Texas and the car was built by ART which has been providing me with "tidbits" of information on the build. Todd has been helping me to convert the car to the Salt flats and offered free tuning ... etc.Their TT Viper coupe "Ballista" is the world's fastest Viper in the standing mile at 147mph(?). I would presume that my engine/car is pretty much a copy of theirs, although they are running a standard 1800whp tune with perhaps as much as 2200whp on occaission? I think that they would like to protect much of their build info because of propietary issues?Oops, this is Joel's thread ...
The art record holder is a gen 4 ACR-X. DID 240.9MPH At 1800rwhp.Why dont you run silicone tubes instead of aluminum? My snowmobile is 330hp on a 1 litre engine (that would be a 2600hp 8.0 litre in comparison) and we saw good gains going to silicone charge tubes and airfilter to turbo elbows. Something to consider.. I will dig up some dyno tests that were done on an 8.3 litre with different air filters and without an air filter. Not much difference in hp.