Slant 6 Turbo 68Dart Project
Bill, today there is no problem running turbo with alot of overlap (efi) and narrow lsa say 112, it will actually make the car scream! The problem with a traditional "turbocam" is too much cylinder pressure when you up the boost to much, but for a daily driver its perfect.
If you want a scary engine, just build a hefty n/a engine and turbo it.
A rule of thumb is double the power for each 14psi boost. If you build a stocker slant with 100hp, you have 200@14psi, a 150hp na is 300@14psi.
I would have put in a moodern camshaft thats a bit hotter than stock without going to wild.
Whats the spec of the stock camshaft? Anyone?
When I built thid emgine...
What I did (since I was inexperienced and totally ignorant of turbos and slant sixes), was to ( as closely as I could,) build a bald-faced copy of Tom Wolfe's and Ryan Peterson's engines.
None of this is my idea; I just wanted something that worked, and their engines both make over 500 horsepower, so, I just followed their lead as well as I could.
Nothing succeeds like success.
Tom took me by the hand and told me what to buy, where to get it, and how to install it. He modified my carb to blow-thru specs, built a deep oil pan for my engine, and made numerous tuning recommendations, such as total spark advance (18-degrees.) In short, he saved me months and months of blind-alley experimentation. Without his valuable advice, I'd probably still be trying to get the head on the engine! My lifetime of experience was with V-8's.... Tom's help was inaluable! Ryan also helped (a LOT,) with tuning information.
After I get this combination "dialed in" to my satisfaction and am happy with how it performs at 20+ pounds of boost, I will definitely try a longer-duration cam; your words did NOT fall on deaf ears... I am anxious for the comparison; that's what hot rodding as all about, after all..
Thanks much for the information/advice. I have an open mind on this....:cheers:
