tbi tuning

[rfmaster]

Originally Posted by gmclowsierra

here is my compination 355, 10.5 compression, vortec heads, comp cams x treme energy 262 cam. .477-.480 lift cam 112 degress of seperation. edelbrock intake,flowtech headers with 2 1/2 exhaust down to 2 c hamber flowmasters. also what is lsa in the above response? thanks for all the great info. JOE

LSA = Lobe Separation Angle (x-treme energy cam has 112 or 114 degrees depending on a grind #) That cam is hot cam, but should work well with your 355 combo.

Vortec heads will not require as much timing as your original heads and with all other speed goodies that you have no stock bin (EPROM contents) will run your engine properly. Did you update Vortec heads for higher lift????

One point of reference for bin files is Moates.net in the 1227747 $42 section. There are several posted bins there that were developed to run engine combos very similar to yours. With enough fuel and proper tune your combo should be in 300+ HP range. Expect to idle around 700 RPM with a hint of lope. My advise - learn how to burn your own chips or get EBL board from Dynamic EFI which allows real time changes - no chips required. http://www.dynamicefi.com/
EBL makes tuning a much simpler task (I have EBL flash in my C20) well worth it.

//RF