amc hemi swap

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1st hwy trip went ok but had some issues with tire rubbing and computer not controlling the cooling fan . Got it all worked out and 2nd trip went much better until lightning rolled in

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Awesome(!) and congratulations!! She sounds good! Was that the first start up? Did you have to create the initial tune, or did you have a tune already? Please tell us more about the exhaust.

I got a 2.5" TTI kit, way back when I first got my 6.1. Built it with other, straight through mufflers. Since then, I had the engine bored/stroked to 393 but more importantly, I'm going to build it now with a Hellcrate engine. I've had my concerns that the exhaust may not be big enough. Stock Hellcat has 2.75 exhaust. What all brought you to the conclusion you needed to go bigger?
 
I blew out an exhaust gasket on the dyno at full boost on the 1st dyno run I did , it may have just been the tti gasket but when i went back the 2nd time i ran cut outs . After the 2nd dyno day I looked on the net and found a chart for the hp power i ended up at it showed i needed 3" for full flow
 
Ordered a set of Mickey Thompson et st r and hit the track last for my 1st time in the car and 1st time actually driving . Car has potential for 10’s. #284 my 3rd pass and 2nd

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