Ford Truck Enthusiasts Forums
Older, Classic & Antique Trucks
1973 - 1979 F-100 & Larger F-Series Trucks
390 emissions question

1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck

Sponsored by:

390 emissions question

Reply Subscribe

Search this Thread

Old

Nov 25, 2010 | 09:36 PM

#1

fifty-two_f1

Thread Starter

|

Fleet Mechanic

Joined: Mar 2010

Posts: 1,342

Likes: 1

From: Jamestown, IN

390 emissions question

Hello, I have an emission question. In 74 they lowered the compression? If so what other things did they do to the 390, also did the 73 fords have a better 390 or not? My strong points are on the 48-52, Not on 390s, but I am curious.

Reply

Old

Nov 25, 2010 | 10:09 PM

#2

hairyboxnoogle

Lead Driver

Joined: Apr 2008

Posts: 6,938

Likes: 13

Not sure on this, but among other things i would assume they got larger combustion chambers, smaller less aggressive cams, and more retarted valve timing. Just typical 70-80s smog motor stuff.

Reply

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

Another 360fe question

bigreed91

1973 - 1979 F-100 & Larger F-Series Trucks

1

Apr 28, 2016 11:38 AM

1973 f-100 ranger xlt

73ethal

1973 - 1979 F-100 & Larger F-Series Trucks

8

Aug 8, 2014 02:33 PM

390 estimated hp

Killgore

FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)

4

Jan 12, 2014 11:14 PM

Ford360dude

1973 - 1979 F-100 & Larger F-Series Trucks

6

Jul 11, 2012 10:49 AM

390 timing question.....please help

TKKTommyboy

FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)

3

Sep 10, 2006 11:00 PM

Tags

390, emissions, fe, ford, truck

Reply Share

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 07:34 PM.