Ok I have a 2009 stock zr1 ...

I'm doing
2" primaries kooks or American Racing headers no cats ..
alky control
nitrous outlet plated system
under drive pulley
cam
heat exchanger with pump. What's everyones opinion on the kits out there?
sending the bricks to d3 performance
....
Do u guys know of a good vendor with good pricing ..... been doing tons of research. .... d3 performance was very helpful with everything I asked ..... and any of the vendors want some business let me know of your pricing with the break down on each part ... besides the cam. we are going with a custom grind..... goldengoat2004@yahoo.com thanks guys ... input would help alot ....

 

I don't know much about superchargers but if you put an under drive pulley on won't that slow down the supercharger

 

instead of changing the blower pulley to a smaller pulley u put a bigger underdrive pulley .... this will give the car more boost and will help with not having belt slipping issues......

 

Oh I see

 

If you are talking about crank pulleys, an under drive pulley would have a smaller diameter than stock. An overdrive crank pulley would have a larger diameter and would spin the blower faster than stock.

 

Overdrive crank pulley. Your mod list look good. Run 100% meth no windshield washer fluid, or boost juice. Top builders run 100% meth for a reason.

 

I would go 1.7/8 instead and use a 1" larger bottom pulley is all you need, the smaller top pulley just don't pay enough and will be more susceptible to belt slippage.

Those superchargers are lacy so overdriving them will do the trick if you have the room.

A one inch larger pulley will only decrease the tolerance by only 1/2 inch.

This will become the nitrous shot with out the nitrous and extra weight / complexity and will cost much less.

Yes to cam heads porting and alky control straight 99% pure methanol injection.

 

Other way around, with the smaller the pulley on the TVS, the faster it spins.

The TVS-2300 is good down to a 2 3/4" pulley spun to 6.2K. After this, is just over pressures/ over spins and creates too much heat instead.

My take,
No on the under drive HB, it just going to cause problems else where (like slowing down the alternator)


Lt headers with high flow cats (min power lose from the high flow cats and the exhaust will not stink like unburnt fuel).

Meth kit so you don't detonate the motor/can push the timing.

Ditch the cam and instead increase the head gasket thickness to drop the compression down more (will pick it up back up on the super charger pressure/increase volume of the heads via thick gaskets allows for more boost when you spin the super charger up more). Remember, the motor is being pressurized, not trying to suck air instead. And since it a street car, we want to leave the power as linear through out the entire RPM, not try to gain upper HP at the lose of lower RPM HP instead (read the wider/more linear the power band, the easy it is to drive the car). Plus, with a high lift cams, your having to replace the valve springs way too often (35K or less if your lucky).

Nos, not no, but hell NO. Its just a problem waiting to happen (not an if, but a when problem instead).

The TVS already has a water pump, but extra cooling on the super charger water supply is always a good thing since you will be spinning it faster, which will increase the water temp of the super charger inter-cooler.

With tune, should be around 750HP at the crank for under $2.5K, and a beast for a street car. For this reason, would not de-hobble the TM much, and instead leave it in play to hold back some instant HP to the ground to keep the tires for spinning if you breath hard on the gas pedal/ keep you out of the ditches.

To add, so long as you don't get stupid, should be fine on the stock drive line.