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Whippled 06 300C SRT8

8K views 15 replies 8 participants last post by  I fly 2 
#1 · (Edited)


Hey Guys,

Finally took the next and final step in my build. Cars at BFNY getting a fully forged 393 installed with a 2.9L whipple, and fore fuel system. Transmission will be upgraded by Enhanced Transmission and it's rated to 800 rwhp. I currently have a BB 8.8 with 3.73 gears, CF DS, and 1400 HP axles. Will be changing gear ratio to 3.23. Also decided to have a 5 point cage installed. Actually that was my wifes request, but probably not a bad idea. Should be some where around 14 psi and on 91 octane it should make 650 or so rwhp. Just wanted to thank Kenneth Garner for the killer deal on the motor, SC, and fore fuel setup. Also, want to thank Erik (Hemi 31) for everything that he is doing for me. AJ will be taking care of the tuning.
 
#2 ·
Congrats on the upgrades. Sounds like your wife is a "keeper", especially in that she supports your effort and is concerned about your safety. Who is the engine supplier? Never heard of him...
 
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#3 ·
Kenneth is a forum member (daparrothead) on the forums. He was originally gonna put this in his challenger, but decided to go a different route.
 
#4 ·
Nice, look forward to seeing the final build
 
#6 ·
Thanks! It's been a long wait to finally make this happen.

I've been following your build also and your getting some nice times at the track. I'm hoping to run high 10s with my pump gas tune and who knows with the race tune.
 
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#7 ·
I'll be stalking this intently waiting to see some video...I love these Whipple builds!
 
#9 ·
2.9L Whipple

Got the car back a week ago and decided to really test her out. Noticed something wasn't quite right when I floored it. It just wasn't pulling like it should, so I talked with Erik and he walked me through the process of figuring out the problem. Decided to remove the restricter from the bypass valve and HOLY CRAP the car is freaking NUTZ. I logged 14.9 psi with no knock on pump gas and good a/f ratio. The car dynoed right at 620, but now Erik is thinking the car is closer to 700 rwhp and has room to grow. I am having a little belt chatter at idle from the cam being fairly radical. Hoping the new tensioner from ARS will cure that problem. Planning on hitting the track soon and hoping to get a 10.x run.
 
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#10 ·
Very nice. Which power steering pump pulley you running? If it's steel, likely belt is slipping at idle on it. Mine did the same thing. My power steering pump was also very tight from NAPA, making it worse, replaced with OEM from dealer and everything went back to normal.
 
#11 ·
I'm using the factory pulley. I was contemplating getting the larger pulley from HHP, but not sure I really need it.
 
#13 ·
Made it to the track last night and pulled off a 11.18 sec pass @ 124.6 mph with a 1.86 60'. Threw the belt on the last pass. The car fell on its face not too far into the run and I think that allowed enough slack to throw the belt. I do have the ARS tensioner, which I thought might prevent that from happening. Hopefully the tune can be tweaked a little to resolve the issue. Erik thought that that the throttle blade was closing for some reason. Gonna try some slicks at some point and see if I can get a 1.6x 60' and maybe a mid 10 sec pass. Erik was also gonna modify my track tune to give me a little more timing on the back end and maybe a few more mph. Overall I'm happy with how the car is running.
 
#14 ·
Relocated the belt tensioner and added 3 idler pulleys + 8 rib setup

Here's the new belt routing and 8 rib pulley setup to help solve my tensioner and belt issues. Moved the tensioner to the upper passenger side, attached to the bracket that the adjustable idler pulley was located, and added 3 additional idler pulleys. The additional idler pulleys allow more belt wrap on the other major pulleys. The added idler pulleys are located: between the crank and alternator, between the water pump pulley and power steering pulley, and just above and to the left of the ac pulley. The tensioner is from a 5.7 hemi and the reason for that was that it puts the tension in the opposite direction as opposed to the the other pulleys that I've used (i.e. GT500 and ARS). With everything installed, the first test run resulted in the water pump pulley coming off the shaft. I'm not sure why...it's pressed on and was aligned with a laser alignment tool. The only thing I can guess is that with the extra belt wrap now on the pulleys that is causing more torque applied to each pulley??? To fix that issue, Mike put two set screws, with red loctite, through the wp pulley collar and into a dimple that was made on the shaft for the screws to bite into. Will test it out in the next few days. Hoping I can put this these issues to rest and get back to enjoying my car
 

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#15 ·
Nice set up. Which pulley you running on the Whipple? My track pulley is the 3". I have the 6 rib standard set up with an ARH street tensioner and aluminum power steering pump pulley (after my factory plastic one collapsed at the track). I'm around 12 PSI on a 426. Knock on wood no belt issues.
Has to be frustrating for sure. . .crazy about the water pump pulley.
 
#16 ·
Currently running the 2.75" sc pulley. I need to data log and see what my boost is. When I had the 3.0" pulley I was right at 15psi. Yeah, I snapped the edge off my factory ps pulley not too long after the sc install. I need to learn to do some of this sh*t myself I'm tapped out on my funds. LOL. If all goes well, then I'm thinking of doing the 15" conversion and getting some weld wheels.
 
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