4.3 Vortec Marine intake swap

[gmoutdoorsman]

Did some reading on 4.3 performance mods and it seems the ONLY fuel mods you can do involves switching to the mercury marine style intake. I was wondering if anyone has any insite or advice involving this modification. Seems like quite a bit of labor and money.

 

[TylerZ281500]

nto worth it for how much it costs imho. you can get a tune on it but i wouldnt waste any money on a 4.3 unless your going all out then turbo it and carb it and all that fancy go fast stuff.

 

[gmoutdoorsman]

Ya i agree its more of a forced induction mod. How much can i pick up a decent programer for? and what all parameters can be altered with a programer

 

[TylerZ281500]

get an actual tune if you want results, off the shelf stuff is crap

 

[FastOrange]

first off, what year is your truck?

4.3L's had Vortec on the valve covers before "vortec" came out in 1996, in fact all 4.3Ls were called Vortec's since the 80's

 

[sewlow]

There is a performance cam out there for a 4.3. Who makes it, or what gains you'd get from it, I don't know. Had the info once, but anything 'performance' for these engines is stupid $$$, especially when the gains are limited just due to the engine itself, that I just kinda gave the idea up!

 

[gmoutdoorsman]

its a 1998 1/2 ton 2wd (not tbi)

 

[gmoutdoorsman]

How much would a good tune run you think? Or can I go with a mail order deal