There was a post a few days ago about a sale on forged 4.21 cranks. I'd sure do a forged to protect the rest of the investment.
Those SD intakes are REALLY heavy. I had one a 73 a few years back. Depends how you want it to look-I'd opt for an original HO intake.
I have 2 replacement SD Qjets and they are great right out of the box.
SD rods are heavy also-why I sold the set I had.
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Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune [email protected]
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
1964 Corvette Coupe 327 4 speed
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