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  #61 (permalink)  
Old 12-21-2010, 10:35 PM
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I don't understand?
 

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i already own the cam, im just looking for a nice driving street motor that i can afford the gas to drive.
tryed to keep it kinda mild so the wife can drive it also

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  #62 (permalink)  
Old 12-21-2010, 10:40 PM
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You should be able to smoke him.....4-speed and open rear , just take him off the line and walk away from him, watch him trying to play catch-up in the mirror.

I hear what you are saying on using parts you bought, but I think you will regret compromising the result just to keep from losing money on a part already bought. Too many guys make that rationalization when they find out they didn't get what the seller told them it was. Sell the 820's online to someone who is just looking for small chamber heads and doesn't know any better about them(like you used to be ).

I guess I was lucky enough to have a father and stepfather who taught me to never trust the seller, look up or know the #'s for the parts you are looking for and how to recognize forgings so you cant be fooled by unscrupulous sellers or misinformed sellers who don't really know what they have and talk up what they have. Saved me from several 327's that were 307's, BBC's that were 366's, 427's that were 402's, 350's that were 305's, and 351C's that were 351M's
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  #63 (permalink)  
Old 12-21-2010, 10:52 PM
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Yeah,
My dad said not to do it (he's his friend). I shoulda listened... I meant to say he has limited slip not open. There's an old man with a chevelle and a 350ci (mild mild) that talks smack alot and he has open diffs. I get the chevelle and the nova mixed up.


I won't use the 820s and you've got a point about those AND the idea of not noticing the power difference from lack of compression due to the fact that I'll NEVER get all or near all the power to the pavement.

I think AFRs are for me. I saw they have a 383 SBC dyno at 500 hp with 9.5:1 CR using thier heads and the XR288HR (that's kinda why that cam).


I've heard about the cam that matt talked about and I think he'll be happy with it.
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  #64 (permalink)  
Old 12-22-2010, 01:48 AM
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I found a couple of sets of 781s for 200 bucks (bare). They cc'd to 118cc and would give me 9.3:1 static CR with the -13.80cc speed pros. This seems like a realistic choice. I read that the 820s flow alot like the 781s but am not too familure (yet).


Greg

oh also found 049s for 250 a set but they cc to 122cc
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  #65 (permalink)  
Old 12-22-2010, 08:48 AM
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unless the 049 or 781 are ready to bolt on, or at least have had some of the work done already, go buy the AFRs. it wont be much more.
by the time im done with my 781 heads i wont be that far away from what i could have got new inexpensive heads for.
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  #66 (permalink)  
Old 12-22-2010, 10:02 AM
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781 and 049 are very similar. Personally, I wouldn't worry about running the 820's, provided that the chamber size was what was needed.


BBC C/N 353049 CHAMBER


BBC C/N 3993820 CHAMBER

If quench was all there is to be considered, the closed chamber heads would be the winner, hands down-

BBC C/N 3872702 BBC HEAD

I would agree though- a set of good aluminum heads can be bought so cheaply anymore, that reworking OE iron heads just doesn't often make much sense, IMHO.
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Old 12-22-2010, 10:42 AM
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I think there has been some really good advice here for you as far as building the BBC. Put the parts that you aren't happy with on ebay or craiglist and get the AFR's especially if those have the least amount of labor and shipping costs. It looks like you can just buy the AFR's ready to bolt up for only $2209...each?

We can have your bug built, caged and on the strip for a set of heads.
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