302 exhaust
Thread Starter
|
Senior User
Joined: Nov 2001
Posts: 294
Likes: 0
From: Calgary Canada
302 exhaust
I hate to bother you guys with another exhaust question but I just talked to the guy at the muffler shop and he tells me that if I convert from the stock single 2" exhaust on my '72 302 I will lose some low end torque. He recommended a single 2 1/2" with low restriction muffler instead. I want a performance/milage increase if possible but I'm also going for that deep sound...like a retro hot rod with glass packs.
Any suggestions?
Any suggestions?
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
302 exhaust
Sedric, The hot rod boys hate reading that. Have him put on duals with smaller pipe so you can maintain the torque.
http://www.clubfte.com/users/jowilker/USFlag.gif
John
jowilker email me
[link:www.ford-trucks.com/users/jowilker|My Club FTE Page] Member since 01 01
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NCFTO] North Carolina Ford Truck Owners Group
In the cool still quiet of night, you can hear chevies rusting away.
http://www.clubfte.com/users/jowilker/USFlag.gif
John
jowilker email me
[link:www.ford-trucks.com/users/jowilker|My Club FTE Page] Member since 01 01
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NCFTO] North Carolina Ford Truck Owners Group
In the cool still quiet of night, you can hear chevies rusting away.
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
302 exhaust
Run the duals. Run no bigger than 2 1/4" pipes and have them install an H-pipe to balance the exhaust. The should retain your low end and increase the top end as well. Ever drove a 87-93 5.0 Mustang? They will flat out boogy and they come factory with 2 1/4" duals with a H-pipe. My 88 5.0lx has goobs of low end torque!!
Just a note, The 68 GT w/ 302 4V came with dual pipes back to a single muffler across the back and then out of the muffler to the rear with 2 tail pipes and chrome double outlet tips. This would also give you a good sound and enough backpressure to maintain low end grunt.
Jimmy
Just a note, The 68 GT w/ 302 4V came with dual pipes back to a single muffler across the back and then out of the muffler to the rear with 2 tail pipes and chrome double outlet tips. This would also give you a good sound and enough backpressure to maintain low end grunt.
Jimmy
Elder User
Joined: Jun 2001
Posts: 997
Likes: 0
From: Corydon US of A
302 exhaust
[updated:LAST EDITED ON 05-Dec-01 AT 08:55 PM (EST)]302 in my mind wasnt designed for the low end torque it was more of a HP engine, i dont think you will THAT much of a differance no matter what exhaust you run. i'd go with 2 and a quarter if i were u. just my little 2 cents.
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
302 exhaust
On the truck, I would go with 2 1/4 duals in the front ( with a H pipe), a pair of turbo style (not flowmasters, they have very little backpressure and will hurt torque) and then run 2" tailpipes. This will give you a better sound, better breathing without losing low end torque.
Torque is very important because that is what actually moves your truck. In simple terms, Horsepower is how fast your engine will rev up to a predetermined rpm, Torque is how hard the engine will pull.
Example, most diesel engines have around 200 hp and 500 lbs of torque. And as you know, diesels pull weight very well. So for a heavy truck, keep some backpressure, keep the cam small as well as the head ports and you will get the most out of your truck. Also, long tube style headers with 1 1/2" primary tubes would be good too.
Torque is very important because that is what actually moves your truck. In simple terms, Horsepower is how fast your engine will rev up to a predetermined rpm, Torque is how hard the engine will pull.
Example, most diesel engines have around 200 hp and 500 lbs of torque. And as you know, diesels pull weight very well. So for a heavy truck, keep some backpressure, keep the cam small as well as the head ports and you will get the most out of your truck. Also, long tube style headers with 1 1/2" primary tubes would be good too.
Thread
Thread Starter
Forum
Replies
Last Post
edreckers
Performance & General Engine Building
3
Aug 11, 2015 04:13 AM
Matt1966
1948 - 1956 F1, F100 & Larger F-Series Trucks
8
Jul 3, 2014 08:35 PM
Pkupman82
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
13
Jul 27, 2005 07:59 AM
