| Author | Topic: What is restricting airflow the most? |
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nice_guy_wi Dirt Maniac 
Total posts: 120 |
posted December 22, 2004 02:39 PM
Ok every engine comes down to one part choking the engine the most. Running the following set up in a 355 SBC. What is the restrictor? K&N filter And lastly, what is the best solution to fixing it. |
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Eljojo Dirt Forum Champ 
Total posts: 968 |
posted December 22, 2004 03:49 PM
Probably the port match between the early style intake and the vortec heads. |
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jay116 Dirt Freak 
Total posts: 428 |
posted December 22, 2004 05:10 PM
I'll go with the exhaust manifolds first and intake to heads as second biggest problem. What size pipe and how long after the manifolds? Do you have an H, X or Y pipe in the exhaust about 3-4 feet behind the engine? That will help scavenge poor flowing manifolds or heads (but the Vortecs should be at least ok). If the 500cfm carb is a Holley 4412, you should be ok carb wise. Quite a few classes limit cars to that carb.. even with 400+ CID and they manage 6500rpm out of them. |
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nice_guy_wi Dirt Maniac
Total posts: 120 |
posted January 03, 2005 05:48 PM
Ok....sorry for taking so long to get back. 500 cfm Rochester carb is the max allowed by rules. Exhaust is 2 1/2" and it at max 5' from manifold to end. And no we are not running an X, H, or Y in it. |
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hobby10k Dirt Freak
Total posts: 226 |
posted January 06, 2005 06:53 AM
Are you running a set of corvette ramhorns? I would look for a set of those if not, flow alot better ------------------ |