Cracked exhaust manifold
Laughing Gas
Joined: May 2021
Posts: 1,177
Likes: 362
From: Anderson, California
More Information for DORMAN 674173
When you click the Part Number on the RockAuto site, it will bring up an INTERCHANGE of quite a few vehicles where it was used.
Just wondering if you have a 240 or a 300 six. The above Dorman part doesn't show up when choosing the 300 six engine.
When you click the Part Number on the RockAuto site, it will bring up an INTERCHANGE of quite a few vehicles where it was used.
Just wondering if you have a 240 or a 300 six. The above Dorman part doesn't show up when choosing the 300 six engine.
Thread Starter
|
Tuned
Joined: Feb 2012
Posts: 378
Likes: 16
More Information for DORMAN 674173
When you click the Part Number on the RockAuto site, it will bring up an INTERCHANGE of quite a few vehicles where it was used.
Just wondering if you have a 240 or a 300 six. The above Dorman part doesn't show up when choosing the 300 six engine.
When you click the Part Number on the RockAuto site, it will bring up an INTERCHANGE of quite a few vehicles where it was used.
Just wondering if you have a 240 or a 300 six. The above Dorman part doesn't show up when choosing the 300 six engine.
Fleet Mechanic
Joined: Sep 2012
Posts: 1,610
Likes: 54
I may have one. I know that of the two pieces one of them was broken and I got rid of it, but I may have the other half. I don’t know if I have the intake or the exhaust, but I will check it out in about three hours.
Thread Starter
|
Tuned
Joined: Feb 2012
Posts: 378
Likes: 16
I already bought the one from Summit yesterday.
Last edited by Jonesy0027; Jun 17, 2026 at 09:33 AM.
Cargo Master
Joined: Oct 2011
Posts: 2,224
Likes: 654
Trending Topics
Tuned
Joined: Jan 2014
Posts: 341
Likes: 21
From: Weaverville NC
I had a 240 in my '65 F100 2WD. I am using a 1V carb. I replaced the original exh. mnflds with the efi set of exh. mnflds. The engine really liked that it could breath. It was like there was lots more power. I have two plain jane mufflers, then two short pipes that turn b4 the pass rear tire. Less back pressure .
I would not put the restricting one port exh mnflds back on. You will like the power increase of the efi exh. mnflds.
I would not put the restricting one port exh mnflds back on. You will like the power increase of the efi exh. mnflds.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Thread
Thread Starter
Forum
Replies
Last Post
mattios
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
6
Jun 18, 2026 01:31 PM
ADELEANDRE
1961 - 1966 F-100 & Larger F-Series Trucks
8
Jan 9, 2024 07:17 PM
ulnpiper
1948 - 1956 F1, F100 & Larger F-Series Trucks
15
Dec 21, 2015 07:57 PM