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over2land :
Re: BBC header selection, what did you use?
Post by over2land on Sept 18, 2006, 4:19pm
Quote: <TABLE class=bordercolor cellSpacing=1 width="90%"><TBODY><TR><TD width="100%"><TABLE class=quote cellSpacing=0 cellPadding=2 width="100%"><TBODY><TR><TD width="100%">If you go to the link below, you can see what the block hugger headers look like in my M715. If you have any questions let me know.
http://www.geocities.com/ckswayze/index.html</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
Do you have a stick or auto?
With my clutch linkage, the drivers side header you've got won't work for me.
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kevins :
Re: BBC header selection, what did you use?
Post by kevins on Sept 18, 2006, 6:16pm
bluesman2a,
The puke tank came from Napa(I think) it was a few years ago.
Also someone else asked about what tranny, I have a T400 connected to a NP205
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elohim1 :
Re: BBC header selection, what did you use?
Post by elohim1 on Sept 18, 2006, 7:46pm
Quote: <TABLE class=bordercolor cellSpacing=1 width="90%"><TBODY><TR><TD width="100%"><TABLE class=quote cellSpacing=0 cellPadding=2 width="100%"><TBODY><TR><TD width="100%">Chris, I have an extra set of bbc manifolds from my 1st 366 if you'd like.</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
Chris, I may take you up on that.
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elohim1 :
Re: BBC header selection, what did you use?
Post by elohim1 on Sept 18, 2006, 7:57pm
Great pics and great info.
Does not the motor breathe better with headers as opposed to manifolds ?
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robertcowan :
Re: BBC header selection, what did you use?
Post by robertcowan on Sept 18, 2006, 10:03pm
OLDER STYLE BBC MANIFOLDS WONT WORK ON THE NEWER STYLE HEADS I DONT THINK. THE PORTS ARE DIFFERENT.
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bluesman2a :
Re: BBC header selection, what did you use?
Post by bluesman2a on Sept 18, 2006, 10:16pm
Quote: <TABLE class=bordercolor cellSpacing=1 width="90%"><TBODY><TR><TD width="100%"><TABLE class=quote cellSpacing=0 cellPadding=2 width="100%"><TBODY><TR><TD width="100%">Does not the motor breathe better with headers as opposed to manifolds ?</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
Stock manifolds are notoriously constrictive in most cases. Notable exceptions to that would be like the SBC corvette rams-horn manifolds which seem to get pretty good reviews. Yes headers do breathe better, but are notorious for leaking and/or cracking over time. These are not problems one typically has with cast manifolds, they seal better, and generally have much better longevity.
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robertcowan :
Re: BBC header selection, what did you use?
Post by robertcowan on Sept 18, 2006, 11:19pm
they do make vette cast iron free flowing manifold-headers for a bbc. and you can always get the old die grinder out and free up the flow alot too !!!! remember alot of flow helps the top end rpm and less flow equals more torque.....
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40grit :
Re: BBC header selection, what did you use?
Post by 40grit on Sept 19, 2006, 8:15am
chris,
I was consdiering going with Hooker headers, Hotrod magazine did a test back in 2004 with the zz454, 68-74 chevelle headers ( 1 7/8") did the best job for both low end torque and WFO Hp....(516 HP/560ft-lb)
just gotta call and see if they'll tell me the measurements to see if they'll fit
Bob might be onto something also....
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bluesman2a :
Re: BBC header selection, what did you use?
Post by bluesman2a on Sept 19, 2006, 8:52am
Quote: <TABLE class=bordercolor cellSpacing=1 width="90%"><TBODY><TR><TD width="100%"><TABLE class=quote cellSpacing=0 cellPadding=2 width="100%"><TBODY><TR><TD width="100%">they do make vette cast iron free flowing manifold-headers for a bbc.</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
Well color me educated Bob! Did not know that. Thanks for the heads-up!
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40grit :
Re: BBC header selection, what did you use?
Post by 40grit on Sept 19, 2006, 9:36am
I thought for upgraded performance you were always supposed to go headers, cast iron exhaust manifolds are built for cheapness by OEM, not actual performance like a header. Is there a case where iron manifolds outperform headers designed for the same application?