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Discussion Starter #1
Any one using a 1.78 a/r on a GT55-94mm BB this on a 427sbf
1/4 mile only ,P/G , 3.55 gears .
 

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Chupa Cabra
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What are you currently running for an exhaust housing? What is your back pressure to boost pressure? In the 1/4 mile I can see that housing helping a 427 c.i. engine if you're utilizing all the turbo can give you. Or you're close to that.
 

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Everyone that i know of thats used one took it off and put it on the shelf in favor of a 1.40..... and went quicker because of it.
 

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Discussion Starter #4
What are you currently running for an exhaust housing? What is your back pressure to boost pressure? In the 1/4 mile I can see that housing helping a 427 c.i. engine if you're utilizing all the turbo can give you. Or you're close to that.

1.Currently this would be the first turbo I try.
2.No data on back pressure or boost yet.
Will be doing some testing in mid August .
 

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Chupa Cabra
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I'd start smaller on the housing then. Normally most guys don't go to a housing that large unless back pressure is very high.
 
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