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If you have air cleaners on the carbs, see how it runs without the air cleaners. If this fixes it . try some KN filters.

Try running it without the air filter. Some aftermarket air filters are very restrictive and make for a bad running flathead. KN makes a good air filter. Good luck!

Congratulations,I really like that you and your son did all the engine work. How many lbs. of boost do you run?

Hit the search link at the top of the page and type in twin turbos. I posted my homemade setup setup back in April. You don,t need larger valves, stock compression is low enough, and we usually run premium gas. It will run o.k. on regular if you don,t run it hard. I limit the boost to 5lbs...

Thanks for all the interest in my homemade twin turbo set up. I'll try to answer all the questions. This is the 4th turbo set up I've built. The first was for my dad's 28 roadster- pick-up. It used a Corvair turbo and sidedraft carb. Ran good, he used to bragg about how it went up hills. He...

We had a V8-60 in my sons 28 highboy roadster,and it did not like to go up hills. Changed to Lincoln rearend with 4.44 to1 gears and that helped some. Put on a turbocharger off a 2.2 Dodge and hills were not a problem. 1930 turbo

I thought Old Ron and some of the other members might be interested in my newest project. Its a 49 Ford truck block, 276 cubic inch, twin dodge turbos running 5 psi of boost. Its in my son's 28 model A roadster. It idles smooth and runs real strong. Thanks for all the technical articles I found...