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Old 06-21-2022, 10:43 AM   #29
JSH


 
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Quote:
Originally Posted by KingLT1 View Post
No...38% is max with LT4 pump.
Have you ever measured/mic'd the fuel lobe while the cam was in the LT4 engine? I want to be sure what HPE installed because they won't disclose such.
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Last edited by JSH; 06-21-2022 at 12:16 PM.
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Old 06-21-2022, 05:55 PM   #30
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Quote:
Originally Posted by JSH View Post
Have you ever measured/mic'd the fuel lobe while the cam was in the LT4 engine? I want to be sure what HPE installed because they won't disclose such.
The more then likely used a 32% lobe. That was the most common size used with LT4 fueling.
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Old 06-21-2022, 07:53 PM   #31
JSH


 
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Quote:
Originally Posted by KingLT1 View Post
The more then likely used a 32% lobe. That was the most common size used with LT4 fueling.
So I have assumed, but I would sleep knowing for sure.
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2020 ZL1LE A10.
LME LT4 390 short block, LME CID Heads, Kong E2650, FBO.
15" conversion, MT ET Street R 325/15.
100 octane: 1045hp/1055tq.
100 octane + Meth (1x10+): 1117 hp/1067 tq
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Old 06-22-2022, 01:04 AM   #32
swisstyphoon
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Quote:
Originally Posted by JSH View Post
Have you ever measured/mic'd the fuel lobe while the cam was in the LT4 engine? I want to be sure what HPE installed because they won't disclose such.
Same procedure works in the car, you can even measure on the fuel pump lifter, but that one might need a little help to go back down without a spring.
https://youtu.be/CcSAKKld5y4
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