[Bowtie67]

Originally Posted by cell

hmm, now that I think about it, that's actually not what I want. There are only three intake ports on the engine's head, so having three intake manifolds which split into six throttle bodies is really only beneficial if going for max performance, but is total overkill for just efficiency. a simpler setup with three manifolds and three throttle bodies would be ideal, not to mention half the cost for injectors, etc!

perhaps I should just make my own intake manifolds - there is a suprising amount of stuff online about DIY casting! This guy makes his own motorcycle parts:

http://virtualindian.org/3techcasting.htm

Not true, fuel injection on any of these platforms is regulated by what size injectors you have and the ablility to tune an engine. All fuel injection engines low performance and high performance will have an injector for each cylinder with the exception of Throttle body Injection which will have anywhere from 1-4 injectors. Holley makes a 2 anda 4 barrel TBI, GM I believe only produced the 2 barrel unit, on that level to be about equel a 4.3L V6 TBI (S10-Astor Van) unit may be about suited evenly for you inline 6 on top of that Clifford unit.

Will also note that better fuel economy is done with a port type injection than a TBI style injection, TBI is just a glorified carb that inject fuel vs using vacuum to suck or an accerator pump to pump a stream of fuel down the intake, The TBI unit is slightly better than the carb becasue of it's spray pattern entering the intake.