In our first windswept episode of the continuing adventures Project Twister, we left our almost-stock GM Performance Parts (GMPP) HT 383 crate engine making serious power. If you missed last month's ...
According to Gary, the HT-383 (PN 12497317) was basically the result of a quest by GM Performance's Ernie Callard, who at the time was a project manager, who'd been given the task of developing a ...
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