ideal LT primary length for TPI engines?
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Joined: Feb 2001
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From: Hinesville, GA USA
Car: '86 IROC-Z/'94 Z28
Engine: 350 LT1/382 LT1
Transmission: 4L60-E/T-56
Axle/Gears: 3.45/3.42 (soon 4.10)
ideal LT primary length for TPI engines?
I have a set of headman LT headers Im considering'reconfiguring' to better accommodate my TPI engine. Im going to change collectors,adjust primary tube length, and make them closer in total length to each other.Ive tried running calculators online to determine the best primary tube length and the numbers I get are all over the place, from 42" to 51" which makes me kind of reluctant to buy something like pipemax. Im just trying to optimize my combo, 382ci tuned port LT1, custom cam (219/227/112) with an LS1 firing order, 0411 24x. Any guidance or links to good known accurate calculator?
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