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  #16 (permalink)  
Old 03-15-2008, 11:07 PM
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Quote:
Originally Posted by F-BIRD'88
[B][I]
The cam in your 350 is too big for high fuel mileage.
I agree, it's more cam than I wanted. (212/218@ .050)
It's just what I had. I'd prefer about 10 degrees less on both ends, and luckily that's about what the Rhoades lifters provide at the low RPM where I drive.
But, the 350 is not the final solution, I just needed to keep driving while I come up with a better idea.

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  #17 (permalink)  
Old 03-16-2008, 06:25 AM
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I had a 68 corvette once that got 22 mpg. My mechanic thought it was bull till I used his van one weekend and he took mine. I had headers, a flex fan, a Holley economaster carb, 3.08 gears, no smog crap, 2.02 heads and some other stuff. The important part here is that it had a 1975-76 262 short block. Anyway put in a 305 and drive slower Speed kills gas mileage.
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  #18 (permalink)  
Old 03-16-2008, 09:37 AM
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Quote:
Originally Posted by 2000jack
.... Anyway put in a 305 and drive slower Speed kills gas mileage.

Now where's the fun in that????


In a while, Chet.
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  #19 (permalink)  
Old 03-16-2008, 10:04 AM
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Originally Posted by schnitz
Now where's the fun in that????


In a while, Chet.

No fun but he the guy that asked for a 30 mpg car. Probably should have emailed Ralph Nader
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  #20 (permalink)  
Old 03-16-2008, 10:09 AM
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The speed is something I won't be changing. I drive on a 70 MPH road, and I drive 70-75 most of the time. I want to focus on the technology, particularly the technology needed to run the TPI at a low AFR, and the question of whether the low-AFR TPI system would outperform a well-tuned carb.

It did occur to me to go with a 305, I just like the idea of the reduced friction the shorter stroked 283 provides. Other than that, I want to look for every possible novel idea to push the envelope.

I am pretty sure there is a lot of room for improvement. I have gotten great results on other cars in the past using lean mixture, fast timing, very strong spark, reduced drag, (aerodynamic as well as cooling fan) and very tall gearing. I just want to take it to the next level.
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  #21 (permalink)  
Old 03-16-2008, 10:26 AM
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Quote:
Originally Posted by 2000jack
No fun but he the guy that asked for a 30 mpg car. Probably should have emailed Ralph Nader

If you happen to have Ralph's email, I'd like to email him about my Corvairs.

The street 'Vair used the 164 bottom end with 140 heads (4 BIG ports and big valves instead of 2 small ports & small valves) that turbo Corvairs did not get, with 2 early-style (smaller) Corvair turbos blowing into a 4-port ram intake system. It had water-alcohol injection, and water injection into the cooling fan powered by turbo boost. It ran 50-series 15 inch BFG radials (the latest thing at that time) which it would severely smoke in 2nd gear just by stabbing the gas pedal. I was into road racing at the time, and this car feasted on a steady diet of muscle cars, and even one Ferrari 250.

Another Vair was prepared for racing on dirt ovals. The class rules called for specific recap tires, a Holley 500 2 barrel, which I ran on the afore-mentioned tubular ram manifold and 140 heads. The Corvair was just MADE for those rules and for dirt, and it was so fast the organization made a mid-year rule adjustment outlawing it.

Of course, this was in a better time, before the Empire crushed the Rebellion....

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Old 03-17-2008, 12:13 AM
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What about the EEC IV computer? What model, engine, year do you use? What parts do you use and what do you discard? What is this tweeker you talked about, where do you get it? Dale
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  #23 (permalink)  
Old 03-17-2008, 06:45 AM
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Quote:
Originally Posted by 2000jack
Anyway put in a 305 and drive slower Speed kills gas mileage.
A 305....gas milage..... Maybe its just mine that drinks the dino juice


Shane

Last edited by Chevrolet4x4s; 03-22-2008 at 06:44 PM.
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