10-03-2023, 07:08 PM | #1 |
Drives: 2019 2SS Camaro Join Date: Apr 2012
Location: Al
Posts: 828
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LT1 vs LT4 HPFP
Would an lt1 hpfp with a bigger cam fuel lobe get close to the out put of an lt4 pump with a stock fuel lobe?
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10-03-2023, 07:23 PM | #2 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,760
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Problem there is the LT1 HPFP typically operates at 2175 psi whereas the LT4 HPFP runs 2900 psi. So you’d need bigger injectors to compensate for the lower pressure. And if you have larger injectors then you’d want the LPE pump anyway to get the most out of them. I only run 2175 psi but have the LT4+52% injectors & LPE BB HPFP… always a balancing act.
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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10-04-2023, 07:27 AM | #3 |
Drives: 2022 Lt1 A10 Join Date: Nov 2015
Location: clark, mo
Posts: 8,860
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Kerry, why don't you just get the TooHighPsi port injection, run E and you can turn down your High and low side and you won't have to worry again. Run about 70 percent DI and 30 percent PI.
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2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff
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10-04-2023, 04:14 PM | #4 | |
Drives: 2019 2SS Camaro Join Date: Apr 2012
Location: Al
Posts: 828
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Quote:
Both my low side was dropping JMS booster fixed that. Then the high side was dropping but lt4 pump and injectors fixed that. have a stock cam so always trying to learn and experiment. its a hobby. No doubt the toohighpsi port is the bomb. very good option but at my power and set up I just dont need it. hence my question is would the lt1 pump with cam lobe do as well as lt4 with stock lobe. it would be great very helpful if someone could answer that. I would have to change the cam to really anser that. It aint that much of a hobby LOL. Being I put in the lt5 cam as I like stock valve train, and wanted to do away with the dod system. and whoever said that it was same as lt1 cam just not dod. Now BTR says its more like an lt4 cam. So I would think the lt1 spec cam they have would work better for me with the lobe. Then i would not need the lt4 pump sell that pays for the upgrade. |
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10-04-2023, 05:13 PM | #5 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,760
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Quote:
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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10-04-2023, 07:16 PM | #6 | |
Drives: 2019 2SS Camaro Join Date: Apr 2012
Location: Al
Posts: 828
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Quote:
And u can turn the pressure in a middle ground as well. So i don't know. pump can drop to 2500 and still i have plenty of fuel but much lower is a no no. Thanks for ur reply. Any help is much appreciated! |
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10-05-2023, 09:17 PM | #7 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,760
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Quote:
__________________
2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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10-05-2023, 09:34 PM | #8 | |
Drives: 2019 2SS Camaro Join Date: Apr 2012
Location: Al
Posts: 828
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Quote:
The car runs like better than i ever hoped someone help me to just let it alone. :: raped ape scaled dog ect ect. |
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