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Old 03-19-2012, 01:42 PM
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my 307 build up w/possible Turbo (near future)

Okay I have a stock 307 (2brl)sbc in my 4 door 68 nova. The parts that I have now and will b putting on are :edelbrock aluminum dual plane intake, quadrajet 4brl. Only 2 parts 4 now but I am ordering a Howards 110951 cam .470/.470 and can't think of the heads I want to put on. So from you all I need a few insights and tips. I have someone with chevy 882 heads but can't figure out the combustion chamber on them. The chamber tht I'm looking for is around 58cc but can't find these type heads anywhere. Or at least some types of head tht will jump the compression up a bit or something. I've heard or 441 heads but don't kno much about them. The heads tht are on now. I will keep around and clean up a bit 2 drop the compression back down if I decide to buy this ak miller turbo setup(draw through)4rm this dude I kno. I just wanna ask n see wit ppl about good cam choices and about these heads I'm on a scavenger hunt 4. So chime in.

Ps. Dnt say nuffin 2 me about changin the block 2 a 350 or non of tht bs. I like my sleeper.

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Old 03-19-2012, 02:11 PM
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That cam is too big for a low compression small cube motor with stock heads. 882 heads are rated a 76cc combustion chamber volume. You need to decide whether you're going to use forced induction or not before you go any further with your build. I suggest staying away from boost as you're going to pour more money into that 307 than it's worth.

I'd build it with 416 heads off a 305 H/O from an F-body or G-body car, or 081 heads off an F-body TPI car, even aluminum L98 heads from a TPI-era vette will work. Your current intake should bolt up to these heads. Ditch the cam you have picked out for something along the range of a Summit K1101. Full length headers and a free flowing exhaust will make most out of the combination. A good set of tires, new shocks, bushings and a gear ratio of 3.08-3.73 will make the most out of this combo. That's how I would do it if I had to.

I have to say though that you'd probably be better off just swapping in a better motor. Any gasoline V8 from a 96-01 GMT400 chevy truck will slide right in place of the 307 you have and already be a more powerful combination for cheaper than doing anything to the 307. That means you could even have a 305 if you're bent on being different by having an externally identical engine with less displacement. All you need is a vortec-specific intake manifold.
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Old 03-19-2012, 08:20 PM
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Well I see from another thread the quadrjet is a good carb tht won't over or under carb the motor which is good. I'm just tryna find out the rite type of cam 2 throw in this joint. I don't really wanna do the summit cam. But it looks like its jii the cheapest 4 the bang. What a little bit better cam 4 this motor since the stock joints go flat. Would a solid mechanical tappet or a roller cam b out of the question?
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Old 03-19-2012, 08:32 PM
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Hey what if tryna turbo charge this motor in the future what if I wanted 2 throw a m90 supercharger off a thunderbird onto the sbc. Anyone think this is possible.
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Old 03-19-2012, 10:43 PM
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Quote:
Originally Posted by blackpanther68
Would a solid mechanical tappet or a roller cam b out of the question?
If you're interested in a roller cam, once again I would advise buying a 96-01 5.0L vortec longblock. 305 cubic inches, comes with a roller cam and great heads - all stock.
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