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2.8 Ford V6 4 barrel manifold part 3 finishing it up

Very interesting! There has been previous opinion here that the biggest hurdle to improving 2.8 power is the exhaust side of the heads. I didn't get that impression from your videos. What are your thoughts?

What carb are you planning to use with your new manifold?

Thanks for sharing this.
 
Looks like a factory intake! Quick Fuel has a nice 450 cfm carb. It is quite a bit lower than the Offy intake and the carb linkage may have to be bent or trimmed to clear the valve cover. Should help with hood clearance.
 
todd reid said:
Very interesting! There has been previous opinion here that the biggest hurdle to improving 2.8 power is the exhaust side of the heads. I didn't get that impression from your videos. What are your thoughts?

What carb are you planning to use with your new manifold?

Thanks for sharing this.
Click to expand...
Good observation. The intake side of the engine is the problem at this point. From manifold to combustion chamber. The exhaust port tunes up with less work. You can blow a hole in it if you're not careful. The intake side of the engine will tune up with less work once we break it down enough to figure out where to start.
I'm trying too establish a format to give people a place to start. Spot face the intake guide boss .250", 1.410 max throat, valve job placement on the valve, and valve prep. If you understand these things the intake port will tune up fairly quick, if you dont you'll spend a week in twilight zone like me. The high short turn peak and 0 valve angle make the short turn a tough one but it can work.
The combustion chamber is hyper unshrouded and makes the act more like a 4 valve than a 2 valve. The fact that it likes a 20 degree tulip on the valve is enough to make you go whom.
 
260Alpine said:
Looks like a factory intake! Quick Fuel has a nice 450 cfm carb. It is quite a bit lower than the Offy intake and the carb linkage may have to be bent or trimmed to clear the valve cover. Should help with hood clearance.
Click to expand...
I geuss you havent watched the first 2 parts. It is a modified stock intake. Getting the intake low and having enough plenum is the trick. Getting the air turn above the carb and entering the carb cleanly is just as important as what happens below it. A taller air cleaner is always good if you can pull it off.
 
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