WickedC5

iTrader: (3)

I'm having a Forged 347 built soon and will throw on a Procharger F1C w/ FMIC and was wondering how realistic my goals are by wanting to hit my 800rwhp goal. Can I get away with some budget heads such as Patriot LQ9 StgII 72cc heads and meth? How many of you have done it with your procharger and what combination of parts?

Thanks in advance!

Slowhawk

iTrader: (12)

I've done it with AFR heads but the car kept blowing the head gaskets at 840rwhp. Detuned it to 770rwhp and the heads stayed on.

WickedC5

iTrader: (3)

Thanks for the heads up. What can be done to prevent this from happening besides detuning the car?

Thanks,

Slowhawk

iTrader: (12)

Well,we did it on 93 octain.There was no meth kit's back then,so it might work but I wouldn't use stock heads.I'd use an aftermarket one with a thicker deck.

WickedC5

iTrader: (3)

I see, I guess I might have to get some AFR 225's or TrickFlows then.

David Gordon

iTrader: (1)

How much boost to reach 800 RWHP?

Jake@EPP

You will have to push 16-18psi depending on how good your heads work with your cam. I would HIGHLY suggest methanol injection.

Is there a reason you cannot up the cubes? It makes it alot more pump fuel friendly and easier to make the same hp.

eb02z06

iTrader: (18)

800 rwhp? That's it with that blower? That's all you want nothing more? Here's a recipe and i can even mail you the tune. Patriots LS6 heads-stock valves, CNC ported the-ones for $1000 bucks, 4" blower pulley, 8" crank, Dual nozzle meth, return style fuel system, 232/242 cam 114+4, Forged 347 with Wiseco flatops -2.2 cc reliefs-800 rwhp all-day everyday no problem!

WickedC5

iTrader: (3)

What's up Arun? I knew you would chime in
Yeah, For now 800rwhp is my goal, after that who knows
I have a G5X3 112 LSA so I guess I would have to switch up cams but if those Patriot heads can take the boost then I will stick to those. I'll give you a call next week to go over some details. Thanks bro!!!

WickedC5

iTrader: (3)

I'm just trying to keep things simple and somewhat budget oriented I guess by sticking to the stock cubes but nothing is written in stone. I drop my order on the motor next week but If I can get a deal that I can't turn down on a 402ci then I might go with that. We'll see.

pakisho

iTrader: (2)

Im making 680rwhp through highflow cats, stock exhaust, stock manifold and tb, 10lbs of boost, and thats on a D1SC and a motor thats going on 5 years now. Same heads Arun mentioned, and just a 224/228 cam on a 114lsa.

800rwhp shouldnt be hard to do.

David Gordon

iTrader: (1)

Damn I have a DISC 12# on a stroker and was told even with the 2 fuel pumps that my fuel lines were maxed out. Headers and duel exhast to boot with meth. inj.

CALL911

iTrader: (17)

Lots of guys with maxing out the D1SC on a 347 have hit mid to high 700's, so I don't think you'll have a problem with an F1.

IMO, high boost making is easier with the smaller cubes than what some guys are doing on here with say 408's.

Meth injection is awesome! I'd say with it, you could stay on pump gas as well. You don't need anything specific, past a good set of heads, with a boost friendly cam, and a well built engine, and some decent boost out of the F1 (and of coarse all the supporting mods like intercooler, fuel system, and a good tune), you'll breech the 800 RWHP mark with no problem.

eb02z06

iTrader: (18)

A boost-a-pump, 60's and a LPE or Racetronix and Meth will get you up to 650-700. Auto's I found are done at 650.

After 700-just go for the dual pumps, #8 feed, stock feed as the return, boost refrenced fuel pressure.

After 850, rails, 96's and driver box!

Jake@EPP

Boost #'s are just that, #'s . It takes less boost for a bigger motor to make the same hp. MUCH better for pump fuel when making power. Think 500in BBC vs 3.0l 2jz lol.

Either way, getting up in the higher hp levels you might want to consider race fuel to aid against detonation. If your only making 800rwhp, that is much more stress on a motor then say a properly sized turbo motor making 800rwhp, just standard science of parasitic loss.

eb02z06

iTrader: (18)

I agree on the 402's or 408's but then that's another G note for the crank, G note for the LS2 block, the stock ported heads just turned to AFR's anohter note for that, front and rear covers, etc, etc, etc. These C5's don't need all that torque nor can handle all that power. I have a 402 between my fenders but my lil 347 at over 900 rwhp on pump and meth never let me down all season. If I was to do it all over again I probably would of opted for a 364-jsut for the better LS2 block.

I have to keep RPM's number on speed dial just incase I need a tranny and diff-after my car runs low 9's or god help me 8's-I'm just gonna de-tune it to run 9.9's.

Honestly-after 650 rwhp, a C5 is pretty useless-a diesel Volvo will hammer you from stoplight to stoplight!

CALL911

iTrader: (17)

As usual, you make an excellent point Jake.

eb02z06

iTrader: (18)

800 rwhp on a 347 is actually pretty easy, this dyno is through a auto to boot, pump gas and meth, get your CR right and a cam to match it's not a problem. This is with the $900 dollar patriots too-stock valves, just a CNC and springs, stock 97-98 lines too with Bosch intank, 60's-we were right on the limit of fuel-if the BOV didn't open it would made over 800 easy-infact after we sorted out the fule system and swaped to bigger BOV it made over 900 rwhp.

WickedC5

iTrader: (3)

That's what I'm talkin' about!!!

pakisho

iTrader: (2)

Yeah, I really need to do the fuel system and turn the wick up. Im still on a damn six rib!