Chevrolet S10 V8 pickup designed for maximum gas mileage !!!!

[Beau]

IIWIYS - I would put the 400 crank into the 350, and build a 383 stroker (that may be bored .030).

That engine is a torque monster.

Then run a numerically low rear end with the O/D trans of your choice, and you will always be in the sweet spot - torque-wise.

[pete c]

It seems to me that the primary advantage of a FI engine is the tight controls on A/F ratio. What if you had a setup where you could dial in the A/F ratio on the fly as you can with carbed aircraft engines? Am I correct in assuming you can get away with some pretty lean numbers so long as you are puttering around in a low load situation and heat only becomes an issue under higher loads? If this is so, have a setup where he could drive around, very lean and if he wanted to call down to the engine room for more power, all he's have to do is give it a quick turn of a dash mounted knob? I suppose this has already been recommended by someone who said us a 4bbl with the primaries set lean and the secondaries rich. Maybe a combination of the two would be good, as I could see a situation, such as running down the hiway, where you are at a pretty decent sustained load, but not quite into the secondaries yet. In such a case, you would have the abilities to richen the primaries.

[gumby79]

12-Channel Digital EGT and/or CHT Pyrometer Gauge Display
This is a major investment @ 375usd +probs



The above Aviation style driving can be achieved with this gage were every cylinder has an alarm. High and low .if one gose wonky the gage can turn on a water /meth injector for that cylinder or the hole motor like a NOS FOG HAT or NOS RUNNER INJECTION ,but water/and or methanol
Sounds like this will be a custom Radio Flyer purpose bult to showcase your engine building skills , a SEMA. TRUCK. And moving non car worthy stuff.
In witch cace this artical will sted some light on how you can use the gage for tuning ,and it has a +-5%accuracy (1000°C or F on gage=950-1050°actual .
The extra probes can be used for other stuff like coolent,diff, trans,intake air . as the device will read and display all the way down past ambant (-148°)

MPG-4 Featured in Fast 20Car Magazine Issue 20332 July 20 2013 .pdf

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Aerohead this is the gage for your streemliner nabor that we were talking about with the melted pistons.
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They also have a 4 cylinder version for our 4banger brothers .

[bandit86]

Originally Posted by Beau

IIWIYS - I would put the 400 crank into the 350, and build a 383 stroker (that may be bored .030).

That engine is a torque monster.

Then run a numerically low rear end with the O/D trans of your choice, and you will always be in the sweet spot - torque-wise.

I never understood this. Ruin a 400, loose 20 cubic inches, and pay for a crap load of work, for what? The 400 would have the same torque, if not more because of the larger size.

[gumby79]

1)Reduced rotating mass 4.0"Vs4.125"bore =faster rev and higher topend 2)closer to square piston/ stroke ratio

[Beau]

Originally Posted by bandit86

I never understood this. Ruin a 400, loose 20 cubic inches, and pay for a crap load of work, for what? The 400 would have the same torque, if not more because of the larger size.

You might want to look into it further. I believe you may find things are different than you have described, on several fronts.

[Bassdoctor]

Did a comparison last night between the 267 and the 283 w/ 601 305 heads, using the same camshaft and equal Dynamic Compression. The 267 best the 283 by 1/2 mpg but the 283 had 60 more HP at 5500. 😕 The 283 had a lot less horsepower loss than the 267 did.
Where can I find formulas for calculating (approximating) torque at a given rpm using average chamber pressure ???

[Bassdoctor]

Would members be interested in seeing the way I modify Holley Booster for better fuel atomization and low flow performance ?

[spdfrk]

I'd be interested in seeing that modification. I have buddies who still run carbs.

[bandit86]

Originally Posted by gumby79

1)Reduced rotating mass 4.0"Vs4.125"bore =faster rev and higher topend 2)closer to square piston/ stroke ratio

How much weight is .125 larger bore going to add? And over share will make it rev faster, but all things being equal, 20 more cubic inches add 5%more power

Originally Posted by Beau

You might want to look into it further. I believe you may find things are different than you have described, on several fronts.

Seriously? Same crank. Wider bore. There is a common knowledge, the claim that having something one off is better, the misconception that everybody knows, that a 383 is a torque monster. Having the same stroke as a 400, all things are similar if you were to install (if possible) smaller cylinders. A bigger bore makes more torque because you have a larger piston area, therefore the same psi pushing down has a larger area to push down on.

Kinda why all old hoteods have/ had 350 Chevys. Everybody thinks its the coolest. So take one, make it bigger, into a 383. Still a boring SBC.