when you talk about pulley sizes I am assuming you mean bigger/smaller which will turn the supercharger faster/slower and the testing your doing is in the form of HP/TQ and how those big/small pulleys relate for the best numbers ... ????
boost numbers being around 10psi .. that because your compression is 8.5:1 so your block can handle the extra boost?
Yeah I can prolly throw 20lbs at it with no worries, the motor is pretty much built for it. HHP/BES dont play around at all. But somewheres around 10psi should put me around 700rwhp or better figure about 28-30 hp per lb. About as much as I want. After I get some runs in we will see, I may go bigger for my NMCA races this year. No sense in going back east unless Im ready to give the competition a run for there money! lmao! :thanks:
Yup. I too am looking for 10 psi. CMW blueprinted my motor for the 426. The only thing differnt is I do not have the stroked crank shaft. My motor can handle well above 1000 hp... Let's get er done Christopher. hehe
I'm learning Chris .. some of your and Ron's previous posts were very informative for me so I appreciate that.
I am curious why with engines built to handle 1000+ hp you would limit boost to 10 psi and 700 rwhp? It it a case of making controllable progress safely or a concern about other components other than the engine failing? I am considering running more than 10 psi and wonder where my thinking is off? Reliability or safety issues? I plan on running full slicks so power to the ground should not be an issue. Any input is appreciated.
My suggestion would be if you want higher than 10psi, you have a high boost pulley and tune for the track, and the 10psi pulley and tune for the street. I am also going to run a 10 psi pulley. This will be for track and street. Mostly because I do not have an upgraded tranny (yet) and do not want to kill my daily driver. Especially when the cash flow is not here. haha
In my case its controllable progress safely, Jumping from 450 to 700 is a big leap, The belt will slip for sure even right there, There "Techco" planning on going to cog belts real soon to avoid this, So since were on the cutting edge it makes no sense to take a leap bigger then that, Baby steps. I can easily throw 1000hp at my motor but at the same time thats above and beyond the goals I set forth for my car. Which I consider a street car. If a track only car was my goal Id be going about this a bit differently.
Thanks for the input. I can see both ways of thinking. I am going to the expense of building the T6060 to handle 1200 hp/1000 tq. as well as the driveshaft and a custom clutch/flywheel. Since the '09 axles are manufactured with a different process than '08 I'll test their limits. Tentatively I plan 800 rwhp with one tune for street and one for the track. I plan full slicks on the track so if something breaks I'll try to find an improved solution as this is my play/race car and not needed as a daily driver. As I get more into this build I'm realizing I have to make safety/performance choices that do sacrifice daily driveability. Having experienced a sub 10 second pass at the track I agree to take progress slowly and safely. I plan on several 200 ft /600 ft/1/8 mile passes to feel out my car before making any 1/4 mile pass. I believe safety for yourself and the other driver is priority #1 but I would like to press the edge performance wise as well. I really appreciate your input and sharing your experiences to help a newcomer like me. I think a cog belt is probably going to be necessary to prevent belt slippage as well but from my understanding shaft/pulley support on the stock Techco is very solid. I remember someone (a jeep) kept throwing belts from shaft deflection under heavy load. Once again thanks for your input. I am amazed how many people have offered so much helpful information in the performance car community.
This is, IMO, the BEST extended family out of all car manufacturers. This goes for ALL LX, WK, LY/LC, or any mopar forum. These guys impress daily.
Yes! As well as persons working in the industry, engineers, car builders, manufacturers, racing fans ect. As I keep telling those helping with my project THIS IS FUN!!!
Im flying outta here to Sacramento in a few hrs. So far Bob's at 8lbs of boost, over 600HP/600TQ on a very conservative tune, 11.2 A/F's at WOT. Fuel system is holding up. This should be good!! Weather looks good to. :thanks: I guess its on!
