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Old 05-11-2024, 08:24 AM   #6
JSH


 
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Drives: '20 ZLE
Join Date: Jun 2020
Location: Mile High
Posts: 4,195
Quote:
Originally Posted by MatthewAMEL View Post
Moving from sea level to Denver.
Contemplating a pulley switch (from OEM 2.5" to 2.3") to attempt to recoup some of the lost power.
Any other ideas I should be looking at? I don't want to tune.
Thanks.
You're going to lose 130 bhp or more on a stock LT4. You can't recover that unless you make some of the mods discussed here daily. An E85 Flex Fuel kit and a tune are probably the least expensive ways to regain power. You can spin your blower faster too but additional heat will be a problem.
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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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