Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 3.8 - 4.3
Thread: 3.8 - 4.3
View Single Post
  #10 (permalink)  
Old 01-15-2012, 03:05 AM
cobalt327's Avatar
cobalt327 cobalt327 is offline
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Posts: 5,031
Wiki Edits: 1616

Thanks: 128
Thanked 616 Times in 565 Posts
Originally Posted by rusty rockerpanels
recently I decided to downsize from 350 chevy to 4.3 in my 38 dodge. The motor going in is 4.3, mid 90's TBI all computer contolled, I wanted it carberated so I pulled the intake and carb off 229. Ports are a little smaller but bolted up. Then I took 229 HEI, and thinking one engine is oddfire and the other is even fire I put magnetic pickup out of straight 6 HEI in the distributer. I also used the flex plate off 229 on 350 turbo tranny. Havent gotten it started yet but am beginning to doubt my thinking. Any imput ???
Did you notice the 229 2 bbl. intake is a 360 ('open plenum') design?

I think the only way you'd see much of an increase in MPG is if you kept the EFI on the 4.3L V6. You could have swapped a Dualjet carb and intake to the 350 and gotten about the same results IMHO.

Your scheme for the distributor will work fine. The problem comes when the 4.3L even fire distributor is used on the semi-even fire 200/229. Even the info on Skip White ebay ad for their V6 distributor says it'll work on both the 4.3L and the 229cid V6 engines. I wrote them to ask about this, along w/a reference to a chrome moly ring that's actually molybdenum inlaid. They responded on the rings (said they'd correct the ad) but never said squat about the distributor.
Reply With Quote