i6 cylinder head
Postmaster
Joined: Jul 2003
Posts: 2,711
Likes: 2
From: Pittsburgh
yes and no.
they will physically interchange, but the EFI head has a smaller, fast burn style chamber. the style of rocker arms also varies between years. EFI are all bolt down style, while carb heads have 3 different arm styles depending on years.
Swapping heads will change the compression ratio by about 1 full point, but will also chage what timing curve the motor wants. The EFI head makes better power at less total advance.
Justin
they will physically interchange, but the EFI head has a smaller, fast burn style chamber. the style of rocker arms also varies between years. EFI are all bolt down style, while carb heads have 3 different arm styles depending on years.
Swapping heads will change the compression ratio by about 1 full point, but will also chage what timing curve the motor wants. The EFI head makes better power at less total advance.
Justin
Posting Guru
Joined: Jun 2001
Posts: 1,208
Likes: 0
From: Conyers
Back somewhere October-November 2004. I drove it around 200 miles home like that. Cruised at 70 the whole way. LOL
It still started and ran, with a little effort before I yanked in and threw a 351 at the truck.
It still started and ran, with a little effort before I yanked in and threw a 351 at the truck.
Thread
Thread Starter
Forum
Replies
Last Post
jonathanpatr
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
1
Sep 20, 2013 06:47 PM
beanhead6D5
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
8
Feb 26, 2012 06:25 PM
