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Old 01-19-2022, 02:27 PM   #29
JP374
 
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Originally Posted by KingLT1 View Post
Probably difference in exhaust and intake manifold. but I would just use the smaller pulley and lower the shift rpm. My friend's car only made like 7psi @ 6100rpm and 3psi at 4500 rpm. So a larger pulley is just going to take longer to make boost and reduce power under the curve.

Here is a couple vids.

1st vid is a Heads Cam converter 4th gen on a 180shot, the P1x 6th gen, and My Whipple 6th gen. I gave the hit to both cars.

Second run is 4th gen vs my 6th gen hitting at the same time.

Both 6th gens are similar boost. I make like a half pound more peak but quite a bit more under the curve. I am on E40 he is on 93. All 3 cars tuned by me. 4th gen trans doesn't like the Nitrous through the shift. Just posting this for comparison on how much difference giving up the hit makes.

Either way I suggest doing what it takes to continue running E or a blend of because 93 and boost is leaving a lot on the table.

https://youtu.be/tG1dVSYPTiQ

https://youtu.be/FOG6LeYwju4
Ok, makes sense. They did ask me what IM,TB,Exhaust etc when ordering so that must be part of the equation.

Nice videos!! Thank you!
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Old 01-19-2022, 02:43 PM   #30
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Yes Msd IM, 103 tb, 2” ARH LT’s, high flow cats, x pipe, no afm valves. At the levels I’m @ I should fine. If I step up the boost one day then I’ll get a different intake at that time. I don’t want to spend the $ to tune it twice if I need to swap pulley out for the bigger 4.13” one etc.

CJ how do you like the car with the PC? Quite a difference I’d imagine?
Thanks to the great folks on this board, it's quite a big difference. They really helped me get things in shape. Went from 12.4 in 1/4 mile stock to 11.9 w/ PC tune and 11.5 last time out after "my" tuning changes and most of the changes you see in my sig. That was before the trans tune. After the trans tune it was huge difference, but track closed so won't know how much till spring. I've got a 3200 rpm stall conv that needs installing. Hoping the trans tune and converter will knock a few more tenths off that time. I'm still running stock cats/exhaust/intake/etc... so I think you are going to potentially see even more gains. So yeah... a likely low 11's car is a blast, and has great street manners to boot

Also, if you dont like your 3.9" pulley, I'll swap my 4.13" with you (half joking). Was wanting to try a smaller pulley. I think my system will support it.
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Old 01-19-2022, 02:51 PM   #31
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Ok, makes sense. They did ask me what IM,TB,Exhaust etc when ordering so that must be part of the equation.

Nice videos!! Thank you!
No problem. I'll respond to PM when I get in front of a computer. Thx
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Old 01-19-2022, 02:56 PM   #32
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Originally Posted by cjperformance View Post
Thanks to the great folks on this board, it's quite a big difference. They really helped me get things in shape. Went from 12.4 in 1/4 mile stock to 11.9 w/ PC tune and 11.5 last time out after "my" tuning changes and most of the changes you see in my sig. That was before the trans tune. After the trans tune it was huge difference, but track closed so won't know how much till spring. I've got a 3200 rpm stall conv that needs installing. Hoping the trans tune and converter will knock a few more tenths off that time. I'm still running stock cats/exhaust/intake/etc... so I think you are going to potentially see even more gains. So yeah... a likely low 11's car is a blast, and has great street manners to boot

Also, if you dont like your 3.9" pulley, I'll swap my 4.13" with you (half joking). Was wanting to try a smaller pulley. I think my system will support it.
Thats great!!! Yes alot of help on the forum for sure. Haha I'm gonna roll out trying the 3.9" and go from there. I will keep ya posted.

Good luck at the track this spring, hopefully it picks up quite a bit for ya.

Last edited by JP374; 02-24-2022 at 09:29 AM.
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Old 01-19-2022, 03:09 PM   #33
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Just realized you have an MSD intake. I heard from someone wise, that if that's a 2-piece intake manifold... you may want to ensure you are being conservative with the boost.
Disagree with the MSD not working under boost. Yes, he should make sure that the gasket between the halves is intact, and that the fasteners are torqued correctly. But an MSD could handle any pulley that he'll use on that P1-X. For example, parish8 successfully ran 22psi of boost in his MSD. Plus, Crawford Racing has mentioned before that he's run 21psi of boost in the MSD. Upside of having the MSD is that he could later add secondaries (port) which could supply enough straight E85 for over 1000rwhp.
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Old 01-19-2022, 05:44 PM   #34
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Oh boy! Good to know. I donít understand how all these can be setup different? Does it have to do with the head unit itself? If PC tech is saying 7psi @ 7k Iíd like to value that as 100% true info. Now Idk if I should just buy a 4.13Ē pulley or not. PC says Iím not gonna see 7psi until 7k rpmÖ.ugh!!!!
Your altitude also make a difference. So for my altitude of 4500', Procharger sent the 3.9 pulley.
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Old 01-19-2022, 06:10 PM   #35
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Your altitude also make a difference. So for my altitude of 4500', Procharger sent the 3.9 pulley.
Could be, im @ 900 ft thou....
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Old 02-08-2022, 10:43 PM   #36
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So I recently picked up some +30 injectors and a LPE HPFP to try out. I’m hoping I will be able to get away with pump e85.

I’m getting mixed reviews now on the lpe and +30’s. Some are advising me to not install them and others say I will be good to run pump e85 with stock cam. Are there any others running them with stock Lt1 cam? I’m looking to be around 625 whp or so on e85 until I do a cam swap. I currently have LT4 stuff with DSX pump. End game is 750-800 whp after cam and forged internals but that’s down the road.

All of this started when I called FIC to get injector data, Bob over there told me it’s very complicated to run the +30 injectors with lpe pump on an Lt1 and that if not setup proper will fail. I called lingenfelter and they told me I would gain very little if anything at all with stock Lt1 cam with the LPE pump over stock Lt1 HPFP. I then reached out to Chris @ Crawford and he highly advised not to run the +30 and LPE pump. He never did give a reason.

I want to avoid meth and just want to be able to run pump e85 @ 7-9 psi

Thanks JP

Last edited by JP374; 02-09-2022 at 09:12 AM.
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Old 02-09-2022, 07:21 AM   #37
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Originally Posted by JP374 View Post
So I recently picked up some +30 injectors and a LPE HPFP to try out. Iím hoping I will be able to get away with pump e85.

Iím getting mixed reviews now on the lpe and +30ís. Some are advising me to not install them and others say I will be good to run pump e85 with stock cam. I know KingLt1 runs them with good results. Are there any others running them with stock Lt1 cam? Iím looking to be around 625 whp or so until I do a cam swap. I currently have LT4 stuff with DSX pump. End game is 750-800 whp after cam and forged internals but thatís down the road.

All of this started when I called FIC to get injector data, Bob over there told me itís very complicated to run the +30 injectors with lpe pump on an Lt1 and that if not setup proper will fail. I called lingenfelter and they told me I would gain very little if anything at all with stock Lt1 cam with the LPE pump over stock Lt1 HPFP. I then reached out to Chris @ Crawford and he highly advised not to run the +30 and LPE pump. He never did give a reason.

I want to avoid meth and just want to be able to run pump e85 @ 7-9 psi

Thanks JP
As I explained before, the Stock LT4 fuel system can support 670 RWHP on E-60 so if your power goal is lower then you could run higher e content.

A cam will extend the range of the LT4 fuel system to about 750 RWHP on E-60

If you are shooting for 800 on E-85 then keep the parts and install them just keep in mind you will need a much larger super charger and forged internals.

Ted..
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Old 02-09-2022, 08:39 AM   #38
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Originally Posted by JANNETTYRACING View Post
As I explained before, the Stock LT4 fuel system can support 670 RWHP on E-60 so if your power goal is lower then you could run higher e content.

A cam will extend the range of the LT4 fuel system to about 750 RWHP on E-60

If you are shooting for 800 on E-85 then keep the parts and install them just keep in mind you will need a much larger super charger and forged internals.

Ted..
He has a LT1 not a LT4...LT1 cam has a smaller fuel lobe to drive the HPFP which I am sure you know... just putting this out there for those that don't. Back when you were testing a SS with Whipple you said the limits of the LT4 fuel system was 620whp on E60.

https://www.camaro6.com/forums/showthread.php?t=502348

Quote:
Originally Posted by JP374 View Post
So I recently picked up some +30 injectors and a LPE HPFP to try out. I’m hoping I will be able to get away with pump e85.

I’m getting mixed reviews now on the lpe and +30’s. Some are advising me to not install them and others say I will be good to run pump e85 with stock cam. I know KingLt1 runs them with good results. Are there any others running them with stock Lt1 cam? I’m looking to be around 625 whp or so until I do a cam swap. I currently have LT4 stuff with DSX pump. End game is 750-800 whp after cam and forged internals but that’s down the road.

All of this started when I called FIC to get injector data, Bob over there told me it’s very complicated to run the +30 injectors with lpe pump on an Lt1 and that if not setup proper will fail. I called lingenfelter and they told me I would gain very little if anything at all with stock Lt1 cam with the LPE pump over stock Lt1 HPFP. I then reached out to Chris @ Crawford and he highly advised not to run the +30 and LPE pump. He never did give a reason.

I want to avoid meth and just want to be able to run pump e85 @ 7-9 psi

Thanks JP
Just to be transparent...I haven't ran +30 injectors and LPE pump on a stock cam LT1 yet. I said per our PM that I am running LT4 injectors and LPE pump. The LPE pump seems to give us similar fuel headroom as a stock LT4 since our cam fuel lobe is smaller. I plan on installing a set of XDI +30's to hopefully get from E40 @ 11psi to back up around E60. It might be a waste not sure yet.

However As I already mentioned to you via PM these fuel mods set you up for the future when you do that cam. You said you planned on doing a cam in future, So it doesn't make sense to spend money twice and why I recommended what I did. If you were just going to stay around 600whp then the LT4 stuff would be sufficient.

Either way Brett @ Pray performance has used the +30's and LPE pump on stock cam ZL1's with good results. He hasn't done any SBE LT1's because he refuses to boost them..but he has stock cam ZL1's making 700whp + on full pump E with that fuel system. I don't see how .5mm of fuel lobe difference between LT1/LT4 cam makes it any more difficult to run +30 injectors with LPE pump. I would definitely want some specific detail on that before I believed it.
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Last edited by KingLT1; 02-09-2022 at 08:57 AM.
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Old 02-09-2022, 09:11 AM   #39
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Thx King.

I for some reason thought you had the +30ís in your car already, my bad. I edited the post above. I see what youíre saying by the math the +30ís and lpe should support e80 at 600-650 mark. I know down the road once I go to a cam then it definitely will at that point. I guess what I need to decide now is if I install the LPE and keep my current LT4 injectors with the DSX in hopes to achieve e80 at 8-9 psi is it achievable? Then do the +30ís when I do the cam swap? Or would installing it all now be the way to go? Will drivability be an issue with the +30ís? I mean at say 7-9 psi on e85 probably wonít do more the 650 whp I wouldnít think?

Thanks
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Old 02-09-2022, 09:17 AM   #40
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Originally Posted by JANNETTYRACING View Post
As I explained before, the Stock LT4 fuel system can support 670 RWHP on E-60 so if your power goal is lower then you could run higher e content.

A cam will extend the range of the LT4 fuel system to about 750 RWHP on E-60

If you are shooting for 800 on E-85 then keep the parts and install them just keep in mind you will need a much larger super charger and forged internals.

Ted..
Thx Ted,

Those #ís are with a Lt1? Iím running stock Lt1 cam. I have the LT4 intake pump and injectors with DSX aux pump currently.

I do have a NIB LPE pump and +30 injectors ready to go. Iím just looking to run e85 and be around 600-630whp roughly.

Thanks JP
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Old 02-09-2022, 09:30 AM   #41
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You could save the injectors for the cam swap and just lower the E content if need be. It's hard saying exactly where you will be at because the fuel system will be close to maxed @ E80 and different elevation along with temp change could put you out of fuel system.

Belt driven superchargers will make more boost as the temps get cooler.

Either way I don't understand how it would be difficult to run the +30's. They tune identical to the LT4 injectors...all you change is the flow rate in the tune.

I have ran the +30's with LPE pump at LT4 rail pressure and LT1 pressure without issues in my Brother's car. I run the LPE pump at LT4 pressure in my car since day 1 for almost 4yrs now.

Here is where the confusion is. If you run the LPE HPFP @ LT1 pressure on a stock LT1 cam it likely isn't going to gain much over a LT4 HPFP @ LT4 pressure. However some of us have found that the LPE pump works fine @ LT4 pressure. I have also found the +30 injectors still work fine at lower pressure then need be as well even though they are designed around LT4 pressures. Raising rail pressure demands more from the low side, Lowering rail pressure reduces strain on the low side but makes the injector work harder. Pressures can be adjusted to find a balance with the fuel system.

This all might be greek to you but maybe it will help.
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Old 02-09-2022, 09:42 AM   #42
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So would running the +30 gain anything with being able to run more E content over LT4 inj? Installing the LPE then is gonna give me more headroom over LT4 pump as long as I run at LT4 psi then?

Im in Mi so 900ft elevation or so but definitely have to cold to tend with.

On your brothers car was that a Lt1?

Thanks for all the great info King! I know every build is different etc. I just wish there was a cut and dry answer lol.
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