Thread: 307 engine
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Old 01-23-2019, 03:37 AM   #6
Mr_Rich
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Join Date: May 2006
Location: Yucaipa, Calif.
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Re: 307 engine

Quote:
Originally Posted by Wikid61 View Post
You can put a set of cheap as cheap 305 heads like I did. +.60 = 317. Really the latest Vortech will bump power even more. Like 30-40 horse. And a bit of torque. But that stock 307 cam is the power killer of all. Old timers told me of guys buying them from running cars for $100 all day (owners were going 350, like always eh?) drop in a dirt cheap factory 327 cam (1973 prices) timing chain. Add headers & a dual plane. Done.
I built this engine with a double roller timing chain and roller rocker arms with an Edelbrock manifold. It already has some pretty good parts to start with. Before I installed the pistons/ rods I remember the crank spun in the bearings almost like a top. It spun really smooth and ran good until it overheated like I previously mentioned.
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1989 K1500 Chev. EC
Original owner; some of the aftermarket parts I've installed are Borla headers, Hypertech chip, Edelbrock water pump, and a Stillen rear disc brake conversion kit.
2009 Hummer H3T 3.7L 5M (sold)
1997 K2500 Chev. EC 7.4L/ 4L80E (sold)
2018 Dodge Ram 2500 HD R/C
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