502 to 540
09-20-2009, 06:53 PM
#2
You are going to need a new rotating assembly. And a new cam and then be ready to have someone remap the fuel curve in the computer.
What is your goal?? That is a more important question. Looking for more speed?? I would say save some money and just have them freshened and spend the coin on a cam and some head work and then remap. Those motors already have a nice crank and rods, why change them.
What is your goal?? That is a more important question. Looking for more speed?? I would say save some money and just have them freshened and spend the coin on a cam and some head work and then remap. Those motors already have a nice crank and rods, why change them.
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Want your ECU tuned right?? Call Mark at Precision www.pmefi.com
Want your ECU tuned right?? Call Mark at Precision www.pmefi.com
09-21-2009, 01:24 AM
#3
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What are your goals? How much power? How fast? What is your budget? The answers to these few questions will dictate your build. Give us a little more info and we can steer you in the right direction.
Eddie
09-21-2009, 08:20 AM
#4
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Join Date: Jul 2002
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You are going to need a new rotating assembly. And a new cam and then be ready to have someone remap the fuel curve in the computer.
What is your goal?? That is a more important question. Looking for more speed?? I would say save some money and just have them freshened and spend the coin on a cam and some head work and then remap. Those motors already have a nice crank and rods, why change them.
What is your goal?? That is a more important question. Looking for more speed?? I would say save some money and just have them freshened and spend the coin on a cam and some head work and then remap. Those motors already have a nice crank and rods, why change them.
09-21-2009, 10:27 AM
#6
Registered
I have a 489 stroker, same thing only bigger pistons. You need a 4.25 stroker crank specific to your version of BB. New Hbeam rods. Have you block bored .030 over with the correct forged pistons. Re-map your ECM, RM builder cam would be the best. Your cam would probably work fine but your RPM range would probably a little lower.
