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Well, the power supply and the motherboard were "fried" (power surge) so a new computer was ordered,,,, should be here Mon. or Tue. We'll see...

NT Congratulations on your (smart) decision to run this with a turbo, and congratulations on a BEAUTIFUL design! You know how to make me drool.... LOL! I WANT ONE!!!! :)

My computer died a couple of days ago and I am writing this on a borrowed notebook and I hate it... I'll get back to you when I get MY computer back from the shop...

John; no chest-beating and, certainly no offense... Before I go completely silent on this subject (I have hijacked this thread, shamelessly, and that needs to stop,) I did not understand a couple of the things you said and if you will humor me this one time, I promise not to distract you from...

John, I assume your answer to my question of, "How many turbocharged slant sixes have you worked on? How much information, in your experience, do you have about, what these forced-induction engines "like?" " is none, and none. Well, that is completely understandable, as the...

John's First Comment "I am not one to follow the crowd. While my buddies were building v8’s (350’s, 360’s & 351’s), I built my race slant six which was good for an easy 13.9 second quarter mile. At some point I will build a stroker slant six. When I do that build, I don’t see the point of going...

John, I know it's too late in this build to change anything; you are already well-past the point of no return and I understand that. Be that as it may, I was just curious as to why you chose the AMC engine to power this Barracuda when it entails so much adaptation and fabrication, not that...

My time od 91.5 in the eighth mile equates to about 112 mph in the quarter and was run on only 15 pounds of boost. The quarter-mile elapsed time for that run would have been about 12 seconds, flat, according to the Wallace calculator. I think those are OK times for a 225 slant six, running...

Car1964 Valiant 4-door Weight 2,680 Gear ratio 2.76:1 Tire diameter 28 RPM through trap unknown MPH through traps 91.5 eighth-mile ET 7.6 Engine CID 231 Head Type cast iron Valve size 1.75" / 1.5" Head Work mild port job Cam Manufacturer Bullet Cam specs at 50 210/210 Carb type and size Holley...

Get the right-sized turbo and the "lag" or, lack of low-end torque is no longer a problem. It's all about sizing.

But, research has proven that slant sixes with turbochargers run the best quarter-mile times with final drive gear ratios in the 2.76 range, so, there would be no need for an overdrive if you just geared the rear end like that. That "one size fits all" gearing would work for all kinds of...

That bolt appears to be in the piston, but, it's not... I machined a cylinder-size (less .010") piece if eighth-inch-thick aluminum to catch the shavings when I cut the O-Rings, so that when I was done cutting, I could just pull the aluminum piece out the top of the bore, and, the shavings...

I agree than a rear-mount turbo is the only choice that makes any sense in this particular application. It will free-up a lot of room under the hood, and run a WHOLE lot better than it does, now!

What he said!!!

Yes, that is the perfect carburetor for this buildup. Perfect! Use the modifications described in "Hangar 18" website and monitor the A/F ratio with you new O-2 meter and you'll be fine. Holley sells a 2-box set of jets (all sizes) to enable that. Get a set... The O-Rings are for...

This is a very interesting discussion with lots of possibilities... and, with several different ways to go. but, since it's YOUR car, you make all the decisions; I will offer what I think might work for you. The fact that you are only looking for a modeate amount of power (250 HP?) will make...

I have a blow-thru setup running 15 pounds of boost on my 225 slant six. When I was gathering parts for my project, I was told repeately, everywhere I searched, "Get a mechanically-operated secondary carb, not a vacuum-operated one." Everywhere. I never knew why, but when I asked people who...

IF that pump drag forces the cam rearward any time the engine is turning, then why would it be necessary or, even desirable to jerry-rig a cam button; it would never be used... would it? I am thinking, "if it ain't broke, don't fix it." What am I missing? And, to the OP, if you think your...

Dan, I appreciate the information! My application is a "race car" only, and as such, is never driven in traffic. That allows me to get away with all sorts of things that would never work on the street.... primarily because this engine never sees much accrued mileage or hours of operation. I...

Well, 252 is way too much duration for my motor, so it's very unlikely that I will be falling prey to that particular piece's mayhem, but I am curious about the Comp cam I DO have, wondering whether I should chance it, not knowing anything about the rear cam journal machining (how was it wrong?)...

Dan, I am in possession of a new, still in the package, slant six cam, ground by Comp Cams. I want to try this cam because it has ten degrees more duration (220 vs 210@ .050"-lift) than the Bullet-brand cam that I am using in my turbocharged 225. I am really ignorant when it comes to cam...

You may or may not know about this: Cam Doctor But, it would answer your questions and is interesting, I think. I had an "unknown" cam once and took it to my local (Fremont, CA) speed shop, and he happened to have a "Cam Doctor" in his possession. It answered all my questions about...

Good advice!!!!

Thanks! The transformation from grannie's grocery-getter to tire-smoking terror is quite dramatic. It's not that hard to put together a fun street machine with a turbo on a slant six, but, people seem intimidated by the "tuning" aspect of it. Too bad; it takes some patience, but pays off...

"TURBO. (period) The /6 head is a big throttle valve stuck on low." I am glad to see that somebody "gets it" with regard to the slant six cylinder head issue. Though there have been countless examples of attempts by some pretty knowledgable hot rodders over the years to make a significant...

I know it's a lot of trouble, but if you are REALLY interested in trying to get over 2 HP per cubic inch out of a slant six, I would think that you ust would HAVE to build a dedicated header and not try to use the stock exhaust manifold at all. My header is just my own interpretation of...

That sounds interesting! Please be sure to keep us updated on your progress! Thanks for posting!!! :cheers:

But, within the realm of possibility, for sure. This is only marginally-pertinent to this discussion, but, one of the (many) advantages of running a turbocharged slant six is, the redline on those motors is usually pretty low; the two I always refer to make upwards of 500 horsepower and, do...

What are the specs??? :glasses7:

Will, that cam sounds pretty "lopey" at idle, for a turbo grind. How much duration does it have at .050"? Inquiring minds want to know... :coffee2: