Another TB Question: CFM?
Another TB Question: CFM? Anyone happen to know the CFM rating on the stock LS1 Throttle Body? I found a webpage that says it's 950 CFM; just wondered it it could really be that high. If that's true, I don't see much need for a ported TB.
Re: Another TB Question: CFM? It can be as high as you like, if you're willing
to accept enough pressure drop. Second oldest
game in the specsmanship book.
It's just another case of mobetta, every bit of
increased MAP at the front is increased torque
out the back. Whether it makes sense on a dollar
basis depends on how much dollar it takes. I
spent like $40 for a truck core (kept the stock
TB for sentimental value) and already had the
epoxy, tools and spare time.
Personally, I'd love to see side-by-side flow
bench tests for stock & ported. One-sided tests
don't address all of the variabilities.
to accept enough pressure drop. Second oldest
game in the specsmanship book.
It's just another case of mobetta, every bit of
increased MAP at the front is increased torque
out the back. Whether it makes sense on a dollar
basis depends on how much dollar it takes. I
spent like $40 for a truck core (kept the stock
TB for sentimental value) and already had the
epoxy, tools and spare time.
Personally, I'd love to see side-by-side flow
bench tests for stock & ported. One-sided tests
don't address all of the variabilities.
Launching!
Joined: Feb 2003
Posts: 209
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From: Iowa
Re: Another TB Question: CFM?
Anyone happen to know the CFM rating on the stock LS1 Throttle Body? I found a webpage that says it's 950 CFM; just wondered it could really be that high. If that's true, I don't see much need for a ported TB.
