Exhaust on the 300 six

[Straight6]

I have a 300 in my Bronco and it needs a new exhaust system, I have read on this forum that increasing the size of the exhaust will yield more power but how much larger should I make it and does the manifold need to be changed out?

 

[Txquadhunter]

I have a 300 in my Bronco and it needs a new exhaust system, I have read on this forum that increasing the size of the exhaust will yield more power but how much larger should I make it and does the manifold need to be changed out?

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Really don't go much bigger then stock case you'll lose low end power where needed in a bronco. Free flowing cat and muffler will gain quite a bit. Find a split manifoild on a EFI 6 and you'll gain use plus be able to run duels easy

 

[Straight6]

How does a split manifold work with the stock one barrel carb and what is envolved in changing it to say a two barrel?

 

[Txquadhunter]

How does a split manifold work with the stock one barrel carb and what is envolved in changing it to say a two barrel?

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The EFI Exhaust manifold is just like adding a header. adding a 2bbl intake is easy. Check part catalogs and you'll find the 2bbl inkates for the 300-6. Just dont throw a big 500+ CFM flowing 2bbl carb on it.

The 300-6 can be built into one heck of a 6 with mod's up to a 4bbl carb. try www.bigsix.com

 

[Straight6]

TXquad, my current exhaust manifold is the exhaust & intake manifold combination, is there a pic or web site I can see to figure out how an efi manifold will work with my current setup. Also if I go to a two barrel carb how does this effect my exhaust system?

 

[Txquadhunter]

TXquad, my current exhaust manifold is the exhaust & intake manifold combination, is there a pic or web site I can see to figure out how an efi manifold will work with my current setup.  Also if I go to a two barrel carb how does this effect my exhaust system?

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See if this page helps.

http://www.ford-trucks.com/forums/showthre...ht=EFI+manifold

 

[Txquadhunter]

heres another good site to help on the 6.

www.fordsix.com

 

[84broncorig]

hey guys try this site for a straight six it helped wit my 81, i had dual headers dual glass packs and no cats and it was so loud but sounded really good.

http://www.cliffordperformance.com they have alot of goodies there.

 

[texan79&96]

in the last 2 years (95-96) ford went with a new exhuast manifold that flows much better than the previous years. clifford performance is an awesome place for 300 six buildups also you should check out.

 

[Straight6]

Will a late model EFI exhaust manifold work with my current 83' combined intake and exhaust manifold and if so how, if not, what do I need to do. Furthermore, you might be wondering why all of the questions, well I have never seen an EFI setup on a 300 inline stock or otherwise nor do I know what the parts look like.

 

[Bradt]

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