Hi guys, not sure if this is the correct forum to post this, but wanting to call upon the collective knowledge of "Team VEMS"!
Currently in the process of buying a (don't laugh) 1977 pontiac firebird trans-am fitted with the proper 400CI pontiac engine, and I'm already planning the EFI conversion
The big problem comes with the intake manifold choice. Seems the common way is to buy what equates to a big single single plane manifold with injector bungs machined in, and top it off with a 4 barrel throtlle body of some sorts. Just thinking though, if this is the best way for a large V8, was thinking along the lines of an ITB set-up on a home brew cross ram manifold with 4 48mm DCOE style throttle bodies, trying to keep the intake angle as straight as possible. This way, I get a true individual runner setup rather than what equates to a large plenum. Seeing as I want to run a relatively wild cam (I plan on using it basically as a road going drag car) I can see the single plane giving me issues. Or am I just over complicating things? If it was all out drag car, I would just go with the tried and tested setup. I'd even go as far as just using a carb! But this car also has to pass emissions and be able to at least drive to town and back every now and again.
Besides the intake probelm, everything else is quite simplistic. 8xLS2 'yukon' coils, 36-1 trigger on the crank damper, and either butcher the dizzy to turn it into cam sync, or if i still have space probs, machine it right down to leave the drive in place and mount a phase sensor on the timing chain cover.
Other issue I've considered is a way to manufacture a smooth rectangular to round port transition. Thinking of making a tool to use in a press to form the rectangular part into the round tubing.
Any thoughts/comments/suggestions to get a proper engine welcomed lol.
Cheers,
-Gavin
* As a quick edit, after some more googling and general research trawling through a lot of my book shelf, I really wish I had paid more attention when I was doing physics lol. I'm now trying to wrap my head around various equations which will more than likely be of no use to man nor beast, but it's making interesting reading. As I have cheap dyno time available, I think this may be a fun thing to play with. Also, dnb, I keep looking at your rover manifold and it keeps my mental gears working!! Seeing as I haven't got the car yet, gives me lots of thinking time, where maybe I should just make something that my gut says looks right and give it a whirl! *