E85 Cast vs 86 Aluminum
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by HighHopes85
Bill hashed it out at the top and helped me understand the difference which you were able to back up with engines.
Originally Posted by HighHopes85
And in the end, I have posted no bad information. AFA me having to edit my post, you win. But really CFI-EFI, I would have to say we are both winners because I took necessary steps to prevent any bad information from surfacing on the net.
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Burning Brakes
Joined: Jun 2006
Posts: 1,096
Likes: 28
From: Baltimore MD
Originally Posted by HighHopes85
The picture posted of the center manifold bolt holes illustrates this difference although it is not a TPI base...
Since I was the person who posted the picture...
I wanted to clarify that the picture is indeed of a TPI base, an Edelbrock #3860 to be exact.
Thanks.
Racer
Joined: Jun 2005
Posts: 416
Likes: 0
From: Gansevoort NY
Originally Posted by CFI-EFI
The heat passage in the '85 manifold wouldn't be in the way of anything, and could have no effect, matched with heads with no heat passage. Despite what you were told, Corvette TPI base manifolds never had different bolt patterns. No harm - No foul.
RACE ON!!!
RACE ON!!!
You are correct that the EGR passage in the early manifold wouldnt be in the way. If you wanted to change to later aluminum heads and keep the egr system working wouldnt you have to use a later manifold? Beacuse the external egr feeds from the exhaust manifold into a rear passage in the later manifolds. If you used the 85 manifold how would you get the EGR system hooked up? I appologize about the bad info on the angled bolts. Like I said I never verified the bases.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by 85C4fanatic
CFI
You are correct that the EGR passage in the early manifold wouldnt be in the way. If you wanted to change to later aluminum heads and keep the egr system working wouldnt you have to use a later manifold? Beacuse the external egr feeds from the exhaust manifold into a rear passage in the later manifolds. If you used the 85 manifold how would you get the EGR system hooked up? I appologize about the bad info on the angled bolts. Like I said I never verified the bases.
You are correct that the EGR passage in the early manifold wouldnt be in the way. If you wanted to change to later aluminum heads and keep the egr system working wouldnt you have to use a later manifold? Beacuse the external egr feeds from the exhaust manifold into a rear passage in the later manifolds. If you used the 85 manifold how would you get the EGR system hooked up? I appologize about the bad info on the angled bolts. Like I said I never verified the bases.
Originally Posted by Steel Breeze
Here's some info that is not false: Compression makes POWER!!! If you can afford the fuel. Were talkin mean machine...
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