[hitmix300]

Originally Posted by KingLT1

There are a couple of reasons...one being if you plan on staying stock cam and need as much fuel volume as possible for E85. Then you might ask why E85, well in theory it will help the stock pistons and rings live being it helps cool the combustion, let alone the ability to make more power with less boost. I didn't want to tear into the motor right away, so in my case it made sense to grab the LPE pump. I am not going to get into the motor without doing pistons. That will be a potential project at a later date.

I understand your position. From my understanding e85 requires 30% more volume. That really cuts down that 10% window. When you compare the percent increase versus dollar, it's a hard pill to swallow in my opinion.

on a side note; if you ever come up to milan dragway or us131 let me know so we can run pound for pound

[ramairroughneck]

A 10% increase on a stock cam lobe is one thing but a 10% increase on top of 32 or 44 percent increased lobe is quite a bit better. Saving $50 bucks on this is a good deal for someone going this route. Good luck with the sale.

[oldman]

I think I could make my HP goal without the bigbore, but since it was cutting it close, I decided the little bit extra was needed. Don't want to run lean with FI.

I was on the fence for a while dual inject (completely stock LT1 fuel system) vs fully upgraded highside, I've jumped and will be running a fully upgraded highside.

[danhr]

Just trolling through a for sale thread in a technical specific subsection.....

[KingLT1]

Originally Posted by hitmix300

I understand your position. From my understanding e85 requires 30% more volume. That really cuts down that 10% window. When you compare the percent increase versus dollar, it's a hard pill to swallow in my opinion.

on a side note; if you ever come up to milan dragway or us131 let me know so we can run pound for pound

It has been reported to provide another 50-60whp of fuel headroom over the LT4 on E85. I couldn't have run full pump E85 with the LT4 pump on a stock fuel lobe.



Ryne @ CMS did a LPE pump and 30% injectors on a ZL1 and had good results with it.




I don't get up to Milan. Not sure why pound vs pound will make any difference...you have a built motor with a cam. It should be up 100+ hp over me.

[Hilltopper]

Originally Posted by KingLT1

That is not how it works...it's 10% more volume vs the LT4 on any type of fuel. It's 40% more then a stock LT1 pump. It has been reported to provide another 50-60whp of fuel headroom over the LT4.



Ryne @ CMS did a LPE pump and 30% injectors on a ZL1 and had good results with it.

This is exactly what I have been pondering on my build. The LPE HPFP and 30% injectors and ditching the meth injection. I assume I would be leaving a little power on the table, but it would be a whole lot less of a hassle without the meth.

[KingLT1]

Originally Posted by Hilltopper

This is exactly what I have been pondering on my build. The LPE HPFP and 30% injectors and ditching the meth injection. I assume I would be leaving a little power on the table, but it would be a whole lot less of a hassle without the meth.

I know Ryne said that car was at 13psi(775whp on his dyno) on full pump E85 with solid fuel pressure on the high and low side. I couldn't find any information if he tried pushing it any further. He got to 760whp with the LT4 pump but that was leaning it way out past the point he was comfortable with. So I guess it comes down to how far you want to push a part to save a buck. I would guess that the LT4 pump would have been done around 720whp or 10-11psi if the AFR was tuned the same. That is why you don't often see the potential gains of the LPE pump because most stretch the LT4 fuel system to the limit before swapping to the big bore and correcting the AFR to a safer range.

That being said, the 30% injectors and big bore is what I would do... it is for sure the more expensive approach but in the end it's also the more reliable approach. I am not a fan of meth, but it does work and is a affordable solution.

[EDFHOBBIES]

You have receipt for pump? And when purchased.. I may take, it's available still?

[GT-ER]

Originally Posted by EDFHOBBIES

You have receipt for pump? And when purchased.. I may take, it's available still?

I sent the pump back for a refund. I thought I was doing whoever wanted it a service but people here only know how to bitch about everything, so back it went. Sorry bro.