4 speed set up in a 2013 Challenger

[GTS340]

Originally Posted by Larry Hill

Will you outline the process of getting an aftermarket piston approved. Was the aftermarket piston identical to the OEM piston as to weight, ring grove size and placement, compression height, and top of the piston?
Thanks

You get extra kool points for having a third petal and fresh air to the engine. Your team has a wealth of knowledge. It looks great hope to see you out with it this year.

Hi Larry,
I might not be the expert to ask since it took almost a year to do so. We bought a stock piston and rod. Try and remove them and you'll know why Chrysler sells rod and piston as one number. We sent that piston to Diamond. They made their purpose piston and sent it with the original and
waited. They called, Paul called, Mike called Pat Cv and he called. I think they were waiting for Chrysler to send the specs to check and re check. They did have Diamond change something. Got resubmitted and it made the books. That is Mike's writing on the piston and he loves to gab on the phone. Give him a call he'll give you all the ups and downs he has had.

Another delay came when the original matching heads were sent to Don Little. He called and notified me the head number wasn't in the books. I researched it and will add the picture to limit my bad spelling. I called Pat Cv and basically he told me he would summit it and it might take 6-8 months at that time to get corrected. I didn't want to hold up Don so I ordered the correct heads.

Paul Haszlauer