Hi ALL

My 95 blazer is getting tired so I'm thinking of rebiulding. I would like to do more than just a stock rebiuld.
Any ideas what I can do to it to liven it up, with out throwing the computer off.

Thanx
Jason

 

I'd put PCM tuning into the budget of the rebuild. A mild cam, some porting, headers and a custom PCM would really wake up the 4.3L.

 

How much would PCM tuning cost?
What would be a good cam to run?
What about boring it? Never heard of or know of anyone boring a 4.3
Deffinatly doing some port work.

Thanx
Jason

 

Checkout this HotRod Magazine article on building a V-6 motor.

Hot Rod Magazine The 3/4 350
http://www.hotrod.com/techarticles/e...v6/index1.html

 

I was trying to think of where I had read about a 4.3L vortec buildup, but couldn't. Just dug out my HotRod Mags from the past few months and sure enough, there it is.

Good Find!

Looks like the best bang for the buck is the cam and porting, but man, these heads really do SUCK! 138/116-cfm baseline... ACCCH... Definitely in need of some 2.02"I/1.60"E valves like they did, but still didn't get anywhere near impressive flow numbers. The port work and valve grinding alone will set you back quite a bit.

 

The porting will be the easy part, I'll pull some favors owed and get them done for free. maybe the valve grinding to.
I want to get a new engine for my car to so its a toss up on which vehicle gets the money first. lol

Thanx for the input and the link folks

Jason

 

Jman:

Here is another write up about rebuilding the 4.3L from SportTruck.com

Sport Truck Magazine