Raylar/PCM/questions

[madclown]

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]

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

[TieRod]

No mods needed to run Raylar rockers. The stock springs are weak but with a stock cam you should be fine.

I was running Comps biggest cam listed in their book with 1.8 rockers.