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Author Topic:   Exhaust manifolds
Racer98
Dirt Maniac

Total posts: 142
posted May 03, 2005 05:46 PM  
I race I imca hobby stock, 9:1 compression motor. I use the 305 exhaust manifolds, (the straight ones that go over the spark plugs). One reason being that they give you alot more room because they are smaller but also because the weight about 7 lbs lighter each than regular ones. But my question is I have a set of vortec ones, like off z71 trucks, But do these give you anymore horsepower? Please Help

racer17j
Dirt Forum Champ
Total posts: 5390
posted May 03, 2005 05:53 PM  
anyone??????? our your thoughts?

racer17j
Dirt Forum Champ
Total posts: 5390
posted May 04, 2005 05:18 PM  
Curious why you think that racer17?


when I peeked inside the "over the top" manifold they look like the have a bigger passage inside of them compared to the under the plug style... I never seen inside a Votec manifold tho either.

not being a smartass, just trying to learn something...

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