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Project InfHemi Update #3

I know, I know! It’s been months since our last written update on Infhemi, so we have lots to discuss.

When we last left off, we had loaded it up from Dynomite Headquarters and taken it to friend of Dynomite and Infhemi driver, Nathan Cooper, for body work and final prep. Coop (as we call him) worked vigorously on the body replacing cab corners, rockers and rear wheel arches. He’s done a fantastic job and you really wouldn’t have known how bad the body was. We gave it a driveway paint job with some black satin and now it looks complete! We have a graphic scheme in mind but we haven’t yet decided on a final design. We hope to have graphics on before the end of the season.

With the bodywork complete, we turned our focus to getting it on the dyno for some initial testing. Being new to HP Tuners we enlisted the help of The Tuning School for their intro course on tuning Hemi cars and trucks. We highly recommend the course for anyone looking to get into HP Tuners. It’s a very sophisticated program which can do A LOT of damage if you don’t know what you’re doing. Through our initial shakedowns and datalogs we were able to get 275HP and 315FT/LB of torque out of our Hemi. There’s definitely some room for improvement, but we just haven’t had the time to get it back on the dyno with car show season upon us. Click here to watch Infhemi on the dyno!

After initial testing, we set out to complete our drag racing essentials. We installed a dual-feed wideband gauge to track our air:fuel ratio and we also purchased the Prolink from HP Tuners so we can log those AFR readings or lambda using the HP Tuners datalogger. It’s impossible to tune a drag vehicle without knowing your AFR. The last thing you want at wide open throttle is a lean fuel condition! We also exchanged the 20-inch rims and tires with 17-inch and added a set of drag slicks to the back. Finally, in order to heat up those slicks, we added a line-lock. What that does is bypass the rear brakes to allow for easier burnouts.

With that all done, we were finally ready to hit the track! We went to our local drag strip at Shannonville Motorsports Park for a test and tune night to see what Infhemi could do. It wasn’t blazing fast by any means, but we did put down a respectable 14.1 seconds in the 1/4 mile at 96 mph. In hindsight, we were only running 93 Octane fuel without any octane boost and we also meant to do a few runs without the tailgate on. We’re hoping for 13.9 naturally aspirated the next time out. The next item on our agenda is to install our nitrous system!! Stay tuned!

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