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So had some parts left over from the old truck engine and picked up speedometer from the old barn. Made this as a gift for the man that sold me my Mach. What y'all think? RMC are his initials

Several of the big car shows around here started handing this kind of art work out as the awards. Shared the pic with some of my car friends around here and they said they'd pay 100 to 150 for something like that. Who knew.....one mans junk another mans treasure

Ya, but i do live in Bakersfield, so...

I had noticed the fuel in the bowls wasn't visible when looking into the glass sites after a period of time. I had assumed it was evaporating out. Likely at a much higher rate after driving due to heat soak, then tapering from there. Fuel smell wasn't something that I used to pay much attention to because it wasn't noticable after an evening or so. And that smell is probably more just the carbon monoxide from pulling into the garage.

Today I picked these up from a guy I work with. M-6049-X306 heads w/Ford Racing 1.6 roller rockers, & a M-6250-B303 cam from a M-6007-X302B new Boss 302 crate motor.

i think its the opposite with regards to length. this is simply because a longer primary tube length helps to isolate the neighboring cylinders from the pressure wave induced in a neighboring cylinder. for example a cylinder is just at the end of it's exhaust cycle and it approaches the overlap period (cylinder pressure should be almost nothing). there will have been a cylinder prior to this that just cracked open it's exhaust valve and induced a high pressure pulse into the exhaust system. the cylinder during overlap will be very sensitive to any pressure in the exhaust. the longer tube helps isolate the cylinder better. header primary lengths generally reduce in length as the rpm requirement increases because of the resistance of the pipe/unit length. tri-y's help with space constraints compared to having all tubes merge at one point but can still act the same by taking advantage of keeping the increased separation by merging cylinders that aren't consecutive. the book "Scientific Design of Exhaust & Intake Systems" is a nice easy read.

You gotta name the truck "Elizabeth" now, dontcha?

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