well i had build a custom upper plenum for my turbocharged v6 motor in my camaro and it did wonders for power,its shortened the 19inch long runners to 15 inches and got rid of a huge nasty 187* bend in the runner.not to mention the plenum volume was tripped.

well i think i can improve the whole intake system a whole lot further and ive got a few ides,but im unsure of a few things

first off i plan on cutting out the remaining 53* bend in the runners and shortening the overall runner length to 8 inches down from 15.

problem
i will lose my port injectors, injectors instead of being at the ends of the intake runners will be moved about 4 inches away from the cyl head port entrance
now would i be better off forgetting the port injection and going with a 4barrel tb setup instead or just move the injectors

heres some pics of the complete stock assembly.



now the middle and upper sections will be scraped and i will be left with the base



what im going to do is extend the runners up vertical 4 inches and build a plenum on the top of them

heres the general idea of what im gonna do to the base


now would i be better off putting the injectors mid runner,at the runner entrance pointed in on an angle? or just putting them 80* to the port at the end of the intake runner?

on the stock manifold they lay over about 45* from straight up and down

 

The stock intake ports are practically centered already, I think it would be a better idea to follow the configuration of the 5.0 intake manifold as opposed to the Holley Stealth Ram....

 

the ford 5.0 base is more or less what it will look like,the ports wont be down the center liek that though they will be 3 offset to a side. biggest issue i have is injector placement,i really tempted to go 2 x 2barrle tbi units and ditching the port injection,but the plenum will take alot of trial and error to get proper fuel distribution to all 6 cyls. on an na motor i would have no fear of doing this.but on a boosted motor its that much easier to blow it up due to one or 2 cyls going lean.

so right now im looking at diff types of fuel injectors for the right spray patten since i will have to change the angle the port injectors mount

 

^ Can't wait to see how it turns out. Check out what this guy did for his Buford engine, he actually fabricated a Tuned Port Injection setup for his Buick 455 engine. Don't forget Dave, I have that TPI throttle body for you, so maybe you can use it in a similar fashion as this guy did....