What size TB's are on 575SCi's

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09-18-2013, 07:00 PM

1 MAIDEN AMERICA

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What size TB's are on 575SCi's

Are they from the 4.3/5.7 or 7.4?
Thanks

09-18-2013, 07:07 PM

Biggus

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They are from a 7.4 454

09-20-2013, 01:37 AM

Michael Garibay

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They have special injectors too. The Trucks run 9-12 psi. The Mercs run up to 30psi

09-20-2013, 09:18 AM

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Quote:

Originally Posted by Michael Garibay

They have special injectors too. The Trucks run 9-12 psi. The Mercs run up to 30psi

Interesting. I had them checked a few years ago by Dr. Injector and one was bad. He had a replacement. I wonder what it came from, I doubt he's ever seen a 575.
Think there's anything to gain by letting TBI rework my TB's?

09-20-2013, 01:22 PM

JRider

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Use CFM tech, they will modify your tbody adapter plate as well. Stockers flow 670 cfm and their modified Tbodies flow 720. I am running a fuel pressure nearing 40psi. PM me if you want more info.

09-20-2013, 07:43 PM

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CFM is who I was meaning. Doah! Think I can get more boost with slightly larger TBI's? Would I gain anything by having them mod mine? I only rev to 5350. X-Mas wish list is TBS 250's and maybe the CFM's. Everything works great as is so If I'll gain nothing I won't do it. THEN what to spend $$$ on???