Quote:
Originally Posted by Joshinator99
No major difference, the Katech version gets ported, that’s all. For most NA and blower applications the stock ZR1 95mm is plenty and easy to tune as well. It’s plenty of TB for an LT2 intake package.
If you’re shooting for big power on a blower then that’s a different story, then I’d jump over the 95mm (ported or not) and go right to the 103mm.
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+1
Having over-ported an LT5 TB in the past, I can say that tuning for it because quite interesting, and I started over with a new one, lol. I just didn't port it as much, lol.