Quote:
Originally Posted by Z OH 6
I would have used 2" headers for starters on a LT4, 1 7/8" are good for an SS though. As for the TB, it's worth porting the snout and using a 103mm as long as you're going to port the blower at some point in the future. I certainly wouldn't pay for an LT5 TB only to port the blower later and wish you had bought a 103mm, then needing to sell the LT5 TB. The gains from a LT5 TB would be so minimal anyway. I say either don't buy a TB at all, or port the snout and go 103MM so that you only buy once when you port the blower later or use a different blower.
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Gotcha. I went with 1 7/8” because I got a screaming deal on them; $600 with the catted connection pipes.