I dont plan on ever changing the pulley to 20#. I`m pretty sure this will be the end of perf. mods to the car. Its not o-ringed. I`d rather blow a gasket than more expensive stuff. As far as the 331 goes, I love it. Even with 8.6:1 comp. I can break the Nittos during 2nd gear, Hopefully I can get it dynoed before and after the procharger install.
Everything good with your 306?
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1969 Mach 1 351C with a c6(for now)
Sold 92 Rag Top GT
Procharged & intercooled DSS 331 LC
Holley Systemax 2 Intake, Edelbrock RPM Heads,E 303 ,blow thru air meter, race bypass, 42 pph injectors,65mm tb,1.7 rr, Mac long tube headers w/off road H pipe, Force 2 catback, TKO,Pro 5.0, K&N, Alum DS,3 core radiator, subframe connectors,3.73`s, Nitto DR`s and a Heavy Foot.
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