Originally Posted by
Sodbuster
I'm thinking seriously of shipping my ECM of to this guy so he can widen this operating window on the 02`s... well never no if it works until we give it a shot. This has been a problem for me for years via my fuel that I utilize, HHO or no HHO I really want my rig staying away from open loop unless there is a plan to keep from dumping fuel.
Thinking out loud once again.... by any chance is there a aftermarket spacer plate that you all may no of that if I remove the upper throttle body on this motor and replace it with a spacer plate to allow you to run a 4 barrel. If we back up a few years say from 1986 to 1994 the old style throttle body with the two injectors on top of the throttle body there was a three hole bolt pattern. I'm thinking there was a aftermarket adapter plate that would allow you to bolt a 4BRL to that bolt pattern. Also do you all no if the bolt pattern back than is to what it is now on this 1998 vortec, to me it looks the same?
At least you can always get your ECM reflashed at the dealer if its not working like you want.
As to the adapter you want, NOT happening. The TBI had an adapter but for what point, your trying to pull the air of a 4 bbl thru the hole of a 2 bbl. ????
Here's two intakes I've used for the Vortec heads in our year trucks, Edelbrock 2913 or Summit SUM 226018. These are really nice to use. As well as the HEI distributor from the mid 80's so you have full control over timing. I made a regulator to use a carb. on these without having to cut any lines, wires or change the pump. It gives the carb. max. 12 psi and sends the rest back to the tank, and is adjustable. (Stock tank, pump, lines and wiring). Of course going this route you have check engine light as you by-pass all the sensors but you can get some real power out of the Vortec this way!
Its done right or its not done !
Hail HHO.