Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - '98 4.3L transplant to '87 Chevy Pick Up?
View Single Post
  #1 (permalink)  
Old 08-10-2005, 08:58 AM
daveEM's Avatar
daveEM daveEM is offline
Registered User
Join Date: Aug 2004
Location: Edmonton, Canada
Age: 68
Posts: 17
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
'98 4.3L transplant to '87 Chevy Pick Up?

Hi All,

I have a chance to buy a 4.3L low mileage motor from a 98 chev pick up. It
is supposed to be rated at 200 HP and has CPI.

My '87 Chevy Pick Up has a 4.3L engine but it is TBI. I think in '87 the HP
was around 150. I would like a few more HP.

Rather than change the wiring harness and computer it has been suggested I
put my TBI system on the new engine in effect getting rid of the CPI. I
assumed Chevy got the extra HP on the 4.3L by using the CPI.

So... What would I gain in HP using the new engine with my old TBI? Would
the intake from my old 4.3L even fit on the '98 block/heads? How many
changes did this motor go through over the years? Opinions? Ideas?

Reply With Quote