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rockbuggy4x4 wrote:Welcome. got any pics of the truck?
cmann250 wrote:Welcome!
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cmann250 wrote:The stock pump is a 12mm head and rotor. There are also custom 14mm aftermarket head and rotors out there. EDM would be the process to enlarge them, no drill press enhancements here. To my understanding, there is no reason to disable the cold start (referred to as the KSB) in the pursuit of horsepower. The KSB in fact advances timing, therefore giving the fuel longer to burn and thus starting easier as I understand it.
Do you have a horsepower goal in mind? There are a couple trucks well over 400hp with an essentially stock, yet "turned up", pump.
With '89 to early '91 trucks, there is literally 100 hp of free fuel on the table. 300hp is not hard to surpass with a good turbo. The '91.5-'93 trucks have smaller injectors (thus less free power) and are more refined.
But most importantly, what is your power goal?
RCCUMMINS89 wrote:Have you ever been in a properly set up 300-400rwhp truck? It feels like hell on wheels.
Anything over about 350rwhp starts becoming hard to set up properly and creates a lot of heat while towing. Up to 425rwhp or so can be had and tow amazing..............but you've got to know what you're doing.
Now all that aside................an hx35, a fuel pin, a gov spring, intake, and exhaust.....along with proper pump tuning and your truck will have the power to pull anything it can up any grade.
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