Raylar/PCM/questions

madclown · October 9, 2005

Hello, I have a 2003 chev K2500HD with the 8.1/Allison - 4.10 locking rears. I am interested in the Raylar 1.8 ratio rockers for now and then adding the heads later. Will the rockers work with a stock motor with stock heads and a stock PCM. Also will I be able to get the PCM customized to benifiet even more from the rockers? Currently I have a Volant intake and a Flowmaster exhaust. I have a Diablo Sport Programmer now but I am trying to decide between the Westers tune and the Wait4me tune. I was just worried about piston to valve clearance and valve spring binding with the use of the 1.8 ratio rockers. Please help with these concerns as I am looking to increase HP and towing ability as well as squeeze a little MPG out of it. Thank you for your time.... Ryan..

3500in nc · October 9, 2005

Hello, I have a 2003 chev K2500HD with the 8.1/Allison - 4.10 locking rears. I am interested in the Raylar 1.8 ratio rockers for now and then adding the heads later. Will the rockers work with a stock motor with stock heads and a stock PCM. Also will I be able to get the PCM customized to benifiet even more from the rockers? Currently I have a Volant intake and a Flowmaster exhaust. I have a Diablo Sport Programmer now but I am trying to decide between the Westers tune and the Wait4me tune. I was just worried about piston to valve clearance and valve spring binding with the use of the 1.8 ratio rockers. Please help with these concerns as I am looking to increase HP and towing ability as well as squeeze a little MPG out of it. Thank you for your time.... Ryan..

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yes u can get the rockers to work with the stock heads i think that u have to buy a stud kit

im not sure about the programing for the rockers but i know any good tuner will tune it to maximise your engine

hope this is what ur lookin to hear