Boost = pulley size for Procharger P1SC

[Marc s]

Camshafts have a bunch to do with it also.

 

[lostsoul]

Wrong again TED.
I ran a 3.1 on my P1, and blower was maxed out at just under 6500 (engine) RPM.

Stock lower is 7.65/3.1 x (step up ratio) 4.1 x RPM = blower RPM

haha.. figures.. they were the ones to tell me I could use the crank bolt again..

I will have to check it again later once I fix the e-break cable. Even though I have a 9.2:1cp block I dont think I can run 117-19psi on 91..

 

[Blackblurr2007]

At 11lbs with good exhaust these cars rang from 460wrhp-530rwhp. Dynos are all different. The only way to tell is with dragstrip results, with a good driver(stick), and good tires. Otherwise all these hp numbers dont mean dic!! Full weight a car with 460rwhp should run around 11.80@ 121mphish, if you have 530rwhp it should be 11.2-11.40ish @ 126. All stickshift cars. Next if you have 600rwhp it should run 10.80's@ 130mph+, and if you have 670 rwhp it should run 10.40's ish@ 135mph+. And last but not least if your making 720rwhp it should run 10.13@ 139mph+.. Hope this helps your hp # wars and go to the track. Take all this with full weight, stock trans, and bolt ons theses are results from my car over the years! Thanks Jim

If you take the next step and go step it up my car has gone 9.70's on pump gas tune driving it to the track 150 miles round trip!!

 

[recordbreaker5]

that's a lot of boost for a P1...upgrade?

 

[07shelbyGT]

I ran a P1 on my Mach 1 to mid 10's using a 2.9''. Contrary to popular belief the P1 can make some decent power. With my F1A 3.8 or 4.0 (cant remember) I ran low 10's high 9's, 138ish. Full weight car with DR's. The principal problem with the Mach's setup is the 6 rib serp. belt. I used reichard 8 rib pullies which works well but liked to shred up the belts on the serp. setup. Anyhow thats old news.

What belt size are you guys using for a 3.4'' pulley? Thanks

 

[05stroker]

I ran a P1 on my Mach 1 to mid 10's using a 2.9''. Contrary to popular belief the P1 can make some decent power. With my F1A 3.8 or 4.0 (cant remember) I ran low 10's high 9's, 138ish. Full weight car with DR's. The principal problem with the Mach's setup is the 6 rib serp. belt. I used reichard 8 rib pullies which works well but liked to shred up the belts on the serp. setup. Anyhow thats old news.

What belt size are you guys using for a 3.4'' pulley? Thanks

If its not in this thread then please post the info tehre when you find it . Others may wnt to post your info the also .

http://s197forum.com/forum/showthread.php?t=27647&highlight=belt+sizes

 

[ILW84U]

What belt size are you guys using for a 3.4'' pulley? Thanks

I'm pretty sure I used a 68 when I had the 3.4 pulley.

 

[Marc s]

At 11lbs with good exhaust these cars rang from 460wrhp-530rwhp. Dynos are all different. The only way to tell is with dragstrip results, with a good driver(stick), and good tires. Otherwise all these hp numbers dont mean dic!! Full weight a car with 460rwhp should run around 11.80@ 121mphish, if you have 530rwhp it should be 11.2-11.40ish @ 126. All stickshift cars. Next if you have 600rwhp it should run 10.80's@ 130mph+, and if you have 670 rwhp it should run 10.40's ish@ 135mph+. And last but not least if your making 720rwhp it should run 10.13@ 139mph+.. Hope this helps your hp # wars and go to the track. Take all this with full weight, stock trans, and bolt ons theses are results from my car over the years! Thanks Jim

If you take the next step and go step it up my car has gone 9.70's on pump gas tune driving it to the track 150 miles round trip!!

That sounds about right. My car makes 569 and I trap just over 126 MPH. The dyno I tune on is a little optimistic though. I always figured I made closer to 535whp. Procharger says as a "general" rule, every .10" in pulley diameter is worth 1lb of boost. This seems about right with my tests. I made just over 2lbs more boost going from a 4.38" to a 4.13". I have a 3.85" sitting here in front of me and orderd a 3.55" today. Hoping to see 18-20lbs Friday when I dyno the new engine.