Hwy, how much power is that 442 making? I have a hard time believing there is no power loss with 2.5". I picked up 2/10 with 3" headpipes and wish I went all 3". I'm also pretty sure I was told by Dynomax that the STs start losing power past 385hp.
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Chris D
69 GTO Liberty Blue/dark blue
T400, 9" w 3.50s, 3905lbs
461, 850 Holley, T2, KRE 310s, Comp HR 236/242D .572/.594L, RA manifolds, 11.53@114, 1.55/60
The spare: 467, 850 Holley, T2, Edelbrock Dport 310cfm w RA manifolds, Howard HFT 245/251D .561/.594L, 11.59@ 114, 1.57/ 60'
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