91LT16SpeedFormula

iTrader: (35)

Whats everyone doin for high and low fueling? I havent attempted my install yet as I wanna make sure I have the fueling side in order. Is there any way around not being able to do the LT4 HPFP bc it dont fit w lower tub?

FFDP

iTrader: (2)

I thought Whipple says that if you install it the way it comes you don't need to change anything fuel related.

If you are going to up the boost or run E85 you will need/want LT4 injectors and a bigger high pressure fuel pump.

91LT16SpeedFormula

iTrader: (35)

plan on doin overdriven balancer pulley, cam and some other mods and Im on E85 already. I've seen where people have problems fitting the LT4 hpfp bc there isn't enough room on the lower tub of the blower. So yes I'm hoping to turn it up to make close to 800 rwhp so I'm gonna need to figure out high side for sure first

00pooterSS

iTrader: (40)

Ted has a whipple, I believe he said it's normal to grind the housing a little for clearance for the LT4 pump.

Maybe he can chime in on this one, I know he's been looking into this.

@ZO6Ted

91LT16SpeedFormula

iTrader: (35)

I know i saw somewhere on here they did that but I thought that someone ground on the tub and it broke thru and had to be rewelded?

00pooterSS

iTrader: (40)

Ooh wee that sucks, but I really don't know man, I do know Ted has looked into this a bunch and bet he has some good info from researching this very thing for the last 4 or so years (low and high side fuel system upgrades for whipple setups). I tagged him he should chime in when he gets time.

ZO6Ted

Here you go. pmoore4321 on youtube. This guy is so helpful and has many videos. A cam with a big lobe and LT4 hpfp and injectors will possibly get you there. 800 wheel is a lot on E85. Don't know what cu in you are but I'm confident this setup would possibly get there or close with a 5.3. May have to add meth for insurance. I'm really planning on port injection because I'll be 6.2 at least for my turbo truck. Got my block, crank and pistons today.

91LT16SpeedFormula

iTrader: (35)

Perfect, I'll check that vid out when I get a few minutes. The cam I have does have the 38% lobe if I remember right. Mine is a 6.2 and I do have a meth kit installed already in the truck. Thanks for the help on this!