Butchy Boy

I'm looking into buying a Cummins, but I am torn for which I should purchase.

I want to build a hotrod, so I'm thinking alright, go with the ISB so I can use QSB parts for it, just go thru cummins.

Or I could get the others, are bank it with aftermarket items.

So I am asking, what are your opinions? What engine would you get for a preformance machine. Auto or Manual?

~I want to stay street legal also~

wannadiesel

You can't use much from a QSB on an ISB.

If you like electronics, get a commonrail engine ('03-up). If you hate electricity, get a 12 valve with a p-pump ('94 -'98 Dodges).

Butchy Boy

I think I want to go with the commonrail, anyone tried mixing marine parts with theirs?

scottsjeeprolet

Why would you want to use Marine parts?
Fellow chapter member just did 455HP on an 06 with just a Puck & Smarty Jr. stack. It's so easy to get power from the common rails. That would take me a whole ton of money to get there with my 99.

Butchy Boy

Just from what I remember from school the Q series high horsepower, and marine use, were meant to run at nothing then wot.

SRobertson

With marine parts they have unlimited cooling i.e. ocean. I remember when some guys put the marine cam in and were not happy. They are meant to run WOT, but a boat needs a completely different power curve than a truck. That is also why the 370 injectors on the 12v dump a ton of fuel but its easy to melt a piston as the egts get hot in a hurry. I think the 370 were originally marine injectors. Now a days parts are built specific.

Many guys are wiring in the new common rails, I don't like electricity so my ramcharger is getting my old 96 p pump 12 valve.