Competition SPS 66, or Silver Bullet for drag racing

[Morse]

I'm going to a single and nitrous for drag racing. . I've got a 66 now, though I will send it in for a 72 if everyone feels it will benefit me. Has anyone got actual results going from a 66 to a Silver Bullet. . The information will be very appreciated. . Thanks,

Brad

 

[CHolman]

This is a easy one... SILVER BULLET!!!!

 

[pwerwagn]

If ya got enough fuel to spool it, silver bullet!!!

 

[zstroken]

Do you have a sps66 now?? The silver bullet is a 66mm inducer charger. You can get an option of the 71mm wheel. I was told unless your turning over 4000 rpm that the 71mm wheel doesn't have much benefit over the 66.

 

[Jim Fulmer]

Brad I would stay with the 66 but go for a larger ported housing like they use on the SPS 62's. Remember it's not so much about the air but more about the bottle.



I'm only running 50 psi with the single.



Jim

 

[WUnderwood]

I would say silver bullet too!

 

[Diesel Power]

silver bullet for sure Oo.

 

[ChrisBlevins]

Go with the silver bullet I haven't had one surge issue with it at all, and I've pulled around 22 thousand with it so far.

 

[Gaskicker]

Just put the silverbullet 66 in the duallie... ... . holy crap, quite a difference from the BD-1 that it replaced. Pulls hard and quick.

 

[wildmanben]

while we are on the Silver Bullet topic, how would they work in a pulling application?

 

[zstroken]

Like sled pulling?? I have had one on my truck this year. WHen I put in the looser convertor it is going back in.

 

[wildmanben]

yes, sled pulling is what I am after.

 

[zstroken]

The silver bullet is a good single I liked it for sled pulling, just need to get a looser convertor.

 

[WUnderwood]

Industrial Injection is making a 'special' Silver Bullet, mainly for sled pulling only. I think the regular Silver Bullet comes with a 68mm wheel(or something close to that) and the special Silver Bullet comes with a 72 mm wheel. Call and talk to Industrial about the specifics, I just wanted to bring that to your attention

 

[zstroken]

Standard silver bullet is 66mm. The other one is a 71mm wheel. This meets the 2. 8 rule. Like Wunderwood said call Industrial, I discussed it with them and it is just hard to beat the performance of the 66mm wheels. The 71 was made for that person who has to have the biggest that is allowed. Remember though everytime you go bigger on the compressor side you lose wheel speed. Wheel speed is what makes the silverbullet such a capable charger.

 

[wildmanben]

I think that the 66mm wheel would be sufficient for me. I am looking for 610hp and still be able to play on the street.

 

[zstroken]

610hp?? What is wrong with 615hp???

 

[DBraunig]

Standard silver bullet is 66mm. The other one is a 71mm wheel. This meets the 2. 8 rule. Like Wunderwood said call Industrial, I discussed it with them and it is just hard to beat the performance of the 66mm wheels. The 71 was made for that person who has to have the biggest that is allowed. Remember though everytime you go bigger on the compressor side you lose wheel speed. Wheel speed is what makes the silverbullet such a capable charger.

What is the difference in the standard 66 silver bullet and the super phat shaft 66? aside from the polished housing.



Dave

 

[zstroken]

The turbine section is different. The turbine wheel is a different design, and perhaps slightly larger.

 

[Diesel Power]

What is the difference in the standard 66 silver bullet and the super phat shaft 66? aside from the polished housing.



Dave

the difference is the wheels, shaft, housing, porting, and a few other goodies Oo.