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Old 01-13-2011, 04:04 PM
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input on tuning turbo sbc.

Ok everyone. I am putting together a sbc 355 with a single T-70 turbo. Its going in an S10 and is strictly a drag vehicle. I have a holley 650dp that i will convert to blow through. I planned on locking the mechanical advance out of the dist and just running around 20* of timing. I will have a wideband O2 gauge on it for sure to keep a close eye on the afr.

I plan on getting it running NA at first and after i get everything settled with the motor then hookup the turbo. I will then set the carb on the rich side run just a couple psi do an 1/8 mile pass and keep an eye on the afr. as it starts leaning out. I will richen it back up and then do another 1/8mi pass with some more boost and just keep going back and forth until everything is all set. Then when i am happy with the afr and plugs i will do a full 1/4mi pass and hope everything works out good. Does this seem like a good way to do the tune?
Thanks!

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Old 01-13-2011, 05:40 PM
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you should probably put this ? in the engine section
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Old 01-13-2011, 06:14 PM
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Originally Posted by carnahan
you should probably put this ? in the engine section
can a moderator move it please? thanks
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Old 01-13-2011, 08:36 PM
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alright nvm ill just move it over to the engine forum.
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