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Discussion Starter #1
Decided to pull the trigger on a p pump swap this summer. I plan on running a 12mm pump, flowed to 650cc, cpp hot street delivery valves.

The truck currently has 6x.013 injectors in it (vp pressure) will these fuel enough to 800hp once I get the pop pressure changed ?

As for air I was thinking an s467 ?

Any and all input is greatly appreciated! First time doing a build like this
 

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Nice your going to love it when your done.

your pump is capable of flowing the fuel for 800hp.

Should be damn close with the 6x.13’s.

Are you planning to dyno it?
I would keep the 6x.13’s for now. The swap is expensive and alot of work. See how you like it then decide on the injectors.
 

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I would love to get it on a dyno once it’s all done. I think your right about seeing how the 6x.013 injectors are once the swaps done. Any input for the turbo ? Also what timing is every one setting their pumps too?
 

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Do you plan to DD it once done? if so you might wanna consider compounds. They'll be a lot nicer to drive 800ish hp then a single.
I like my timing at 21*. Ive ran it at 19 and 24 also, dyno'd on both and DD for a few months on both. 19* was great for DD but didnt make the same top end power. 24* I was trying to get more top end power on the dyno but again it fell short though that could have been turbo waste gate fault.
 

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Id be interested to know how you like the single s400 I've wondered about that setup for a good while now and would like to try it myself. Be very interested to know how well it would work on a ported and polished head with out the factory intake shelf. Seems to me that there is some flow and spoolup to be gained with the head in that areas. I believe ive heard you can just bump your timing up a couple of degrees on your vp injectors to effectively make them work like a p pump injector should. For example if you want 20* of timing set the engine at 22* and itll effectively do the same thing.
 
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