12 valve vs. P pumped 24v

Head flow:CR>VP>12v

I dont think the 12V vs. 24V debate will ever be settled.

I REALLY want to see a flow chart comparing a fully ported 12v, 24v, CR, and hamilton 12v heads.
 
Ron you still have not found a set of sticks that you like..........
Brandon
 
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Bottom line, I just want the best possible engine in my truck.

everyone is going argue that one engine is better than another, but back it up with some actual facts.

I have had 2 12 valves, and I have owned my first 24 valve for a month or two. I prefer a 12 valve due to the p-pump. BUT is a p-pumped 24 valve better??? That is all that i am trying to figure out.
 
For your application I don't think either is gonna be any better.

If I was you I'd do a 24v just because you have one, and have the sticks/manifold. Especially since budget sounds like a significant concern. P-Pump swaps can be done CHEAP. I wanna say at least one member made money on his after parting out the 12v engine, and selling his VP and boxes...
 
rollincoalCTD said:
Bottom line, I just want the best possible engine in my truck.

everyone is going argue that one engine is better than another, but back it up with some actual facts.

I have had 2 12 valves, and I have owned my first 24 valve for a month or two. I prefer a 12 valve due to the p-pump. BUT is a p-pumped 24 valve better??? That is all that i am trying to figure out.
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No difference. Either way will get you to the same place. Figure out which way would be cheapest, go with it, and don't look back.
 
Yeah I am still tossing the idea up in the air of selling this truck because I am sort of tired of the hand shaker. Regardless I am going to have a cummins but I think a built auto is more for me.
 
Depends on how much downtime you are willing to deal with. Pro to swapping in the 12v is you can rebuild that engine while your 24v is still in the truck and getting your from point A to point B, and on the weekends, point C. 12v has a very simple valve train, bigger stems, integral valve seats.

Pro to the 24v is its already there, you know the history behind, and it will be different to 99% of trucks out there.

My course of action would be to pick up a 12v engine. Either you can rebuild it, swap it in, and sell your 24v in running condition for the same, or maybe more, than you paid for the 12v. If you do the conversion, you will need the hi pres. lines and some small knick knacks for the low pres. fuel system. Downside is you are now trying to sell a 2/3rd complete 12v, and some VP parts that (other than the VP) don't fail very often.

IMO, drop in the 12v if you are looking at it from a financial stand point.
 
Yea you could buy a complete 12v engine and rebuild it while still having your truck to drive. Once you get the engine done, swap it in and sell the complete 24v engine. Wouldn't think you would get hurt either way.

As far as which engine is better, I dont think one is better than the other. Both of em will have pro's and con's compared to each other. But all in all either way you go, it's still a good ole' Cummins.
 
Kick Start said:
24 valve, head will flow more. Might as well not waste money on another engine your gonna build, when you can use the one you have. Use the money you save to make it even badder than you wanted to in the first place.
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Tell him that after he has bought all new lines and all that good stuff on it. And after he drops a valve seat in the 24v or when he needs to buy retainers and springs.......... 12V all the way.
 
rollincoalCTD said:
BUT is a p-pumped 24 valve better??? That is all that i am trying to figure out.
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Absolutely not. By the time you put your money into that 24v just getting it in running fashion. You could put a port and polish job on your 12v and save you many $$$ and have everything you need!
 
I figure with the money I can get for my new injection pump, Quad Adrenaline, and a couple other things I would have completed the swap without really spending too much money.
 
i'm gonna say 12v all the way. it is obviously the most proven motor out there and no one can argue that. a 24v may flow more but who cares if your not porting a head an just throwing a motor in and running it as a street truck. i'm not saying there's anything wrong with the ppumped 24v but there are many other factors involved in making power with this swap. i have seen high hp basic builds to fully built ppumped24s that don't make a lick of power like they should. there's just too much effort and money in my opinion to go 24v when you can drop a 12v in and prolly spend less money and make just as much power if not even more. fif you want to talk porting, a fully ported 12v's will flow with a ported 24v and the 12v will normally run better in the truck because they have much higher swirl to drive the charger.
 
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