, And fresh air....
Engine swap ideas
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
gfw i am not sure that is correct. the 300-6 was a very rare option in the 78-9 broncos.
Now in 80+ the 300-6 equipped broncos tended to have a 3.08 gears since they where backed by a manual 4 speed or C6. 4.10's tend to be a special request and are rare in broncos in general.
the 300-6 got the higher ratio also because of cruising rpms. that motor doesnt like running at 2500rpms + for very long. and since it produces good amount of torque off idle the 3.08 worked.
Now in 80+ the 300-6 equipped broncos tended to have a 3.08 gears since they where backed by a manual 4 speed or C6. 4.10's tend to be a special request and are rare in broncos in general.
the 300-6 got the higher ratio also because of cruising rpms. that motor doesnt like running at 2500rpms + for very long. and since it produces good amount of torque off idle the 3.08 worked.
Cranky Old Guy
Joined: Mar 2008
Posts: 3,562
Likes: 6
From: Raphine, Virginia
That's why I should stay off the big Bronco forum. Just not familiar enough with them vs same year pickups. I thought a lot of the 73-79 era F-150's with the 300 and 4 speed had the 4:10 gears. Back to the EB's where I belong. I may be looking for the wrong thing too. I've hunting for a 79 stepside w/ 4-speed and 4:10's. Thanks for straightning me out.
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
that motor was for sure in the trucks. i know because i had a 73 with 300-6 and 4speed with 4.10s. i loved the combo for sure.
a 79 stepside i think would be rare for sure. that combo wouldnt but you more then likely would find a 351m under the hood.
a 79 stepside i think would be rare for sure. that combo wouldnt but you more then likely would find a 351m under the hood.
New User
Joined: Jan 2010
Posts: 21
Likes: 0
I know even when my exhuast was behind the rear tire i still got a ton of fumes with the window down. i know its illegal in PA but i still put it infront of the tire, louder and no fumes. also my 90 bronco has 3.08 and a 300 which i hate but will probably like when i get my 351w in with the 4 speed. a Lincoln 7018 locker (welded spiders) up front shouldnt hurt as long as you keep the hubs locked out going down the road but i wouldn't do the rear, one tire has to turn faster around turns.
Elder User
Joined: Apr 2009
Posts: 725
Likes: 1
From: Upstate New York
If I drive with the rear window down, I get no exhaust inside. I could easily tell if it was getting inside, because the black smoke pours out when I get on the throttle hard. Another thing I noticed is that there's no black soot residue on the rear tire/wheel, so the exhaust must not be hitting there either.
Elder User
Joined: Apr 2009
Posts: 725
Likes: 1
From: Upstate New York
Thanks, it's just satin engine enamel, since the diesel exhaust doesn't get all that hot, it holds up well.
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Senior User
Joined: Feb 2010
Posts: 158
Likes: 0
well guys if he dont roll the back window down he wont get any fumes. I know my Bronco is notorious for burnin up those rear motors. So I havent had it down for goin on 5 years. I have had my exhaust ran straight out the back for like 7 years now. I dont know though. I may throw some 45s on there and throw it out to the side by the ends of the bumper.
Thread Starter
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New User
Joined: May 2009
Posts: 14
Likes: 0
MMMMmmmm yesssss.. Found me a set of 4.10's today. BUT this tired old goat of a motor has now turned into a smoker
on the right side...Picked up crate 351m with after market timing gears for 300$ cdn.Busted the rear glass the oter day too
. Any ideas on what to replace with?? i dont like havin to worry bout that explodeing "saftey" glass. ......now question. Recurving distributer...who know about and worked with.. should i bother??
on the right side...Picked up crate 351m with after market timing gears for 300$ cdn.Busted the rear glass the oter day too. Any ideas on what to replace with?? i dont like havin to worry bout that explodeing "saftey" glass. ......now question. Recurving distributer...who know about and worked with.. should i bother??
Moderator
Joined: Dec 2007
Posts: 7,987
Likes: 104
From: Boise, Idaho
Click on "User CP" in the upper left (along the blue bar.) Then, click on "Edit Avatar" over on the left side of the screen.
With the exhaust properly routed, it won't come in the back window (even though my users manual says to never drive with it down.) However, straight out the back can be deadly, even with the window up.
With the exhaust properly routed, it won't come in the back window (even though my users manual says to never drive with it down.) However, straight out the back can be deadly, even with the window up.