hey, i was just wondering if anyone out there has attempted to install an edelbrock multipoint EFI system (tbi conversion). onto there lo3 or other tbi equiped engine

 

They are overkill for 305 and 350 engines. They are best suited for larger displament engines where a 2bbl TBI set-up becomes a restriction.

 

the reason i ask is one of my friends has a gm 350 HO that he has had in his garage for a week now, he wants to swap it out with his lo3. he thought he might want to put this MPI system on it. would it be a bad idea then?..

 

No its not necessarily a bad idea it is just an expensive idea. It would work great with that create motor. However so will a 2" 2bbl set up. A 2bbl set up won't be as plug and play because of the chip tuning but then again I am not sure of the tuning stuff with the multi port swap. Isn't it a few grand?

 

acctually, for a vortec 350 tbi swap with the MPI system, the system is only around a grand, but it you wanted to spend big money you could buy the whole system which includes the ecu, wiring harness fuel pump, filter, interchangable computer chips, and some other stuff, for about $2300. i was thinking that would go good with his 350 crate, but its too much money and bs to rip out the stock computer and wiring harness and swap in the edelbrock MPI system. thats just me though

 

a 670cfm tb being a restriction is more of an old wives tail than anything.
that is plenty of air to go well past teh 500hp mark with proper tuning, if anyoen doesn't believe me look at what your local dirt track guys are doin in teh restricted small block classes. most fo them run a 500-600cfm carbs and make well over 400hp while twisting past 7000rpm all night long.
the only real restriction of the stock tbi system was actually mentioned already, the stock computers run out of tables to deal with the rpm. unless you plan to run your engine to 6500 or so tha treally isn't an issue.

the multipoint set ups are not too bad overall. but the gain vs expense doesn't work out too good.

later
tim