4.9 straight six

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Oct 11, 2014 | 10:22 PM

Brandon4point9

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From: New Braunfels

4.9 straight six

My 94 f150 has the bulletproof 4.9 straight six, and I'm just curious if there are any good DYI power upgrades, like a DYI cold air intake..

Oct 11, 2014 | 10:35 PM

Evan_P

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From: Oregon

Don't mess with the air intake. The factory one is a true cold air intake. As for power, that's a tractor engine in a truck. It isn't gonna go fast. Do the basic maintenance and drive the thing knowing it's gonna be reliable.

Oct 11, 2014 | 10:47 PM

Jarryd

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Joined: Mar 2013

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There are no bolt ons that are worth doing. Gears and bumping the timing a little help. Beyond that, you're looking at big money and custom efi to make power.

Oct 11, 2014 | 11:14 PM

xrsfsho

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Joined: May 2014

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From: san jose

Just rock it. Mine is a tank and I have put it through its paces. Hasn't let me down yet.

Oct 12, 2014 | 07:11 AM

BaronVonAutomatc

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Joined: Mar 2005

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From: Earth

High flow cat and cat back exhaust are about the only bolt-ons that would make a noticeable difference.

Oct 12, 2014 | 09:34 AM

Jarryd

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Quote:

Originally Posted by BaronVonAutomatc

High flow cat and cat back exhaust are about the only bolt-ons that would make a noticeable difference.

I still haven't put a high flow cat on mine. I need to do that.

Oct 13, 2014 | 08:45 AM

Brandon4point9

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Joined: Oct 2014

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From: New Braunfels

Ah okay, but yeah, besides exhaust, I had a feeling there weren't much stuff you can do to these engines. It seems like they're as good as they can be from the factory

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Oct 16, 2014 | 04:59 PM

Grizzly4x4

Tuned

Joined: Dec 2013

Posts: 274

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From: Bakken

Have an exhaust on mine. Sounds way better than my f250. I haven't noticed any power differences compared to other 300 6's though.

Oct 16, 2014 | 08:07 PM

#10

Bootlegger's Deluxe

Fleet Mechanic

Joined: Oct 2010

Posts: 1,690

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From: Delhi, Iowa

it's pretty simple when it comes to 300's.

1) drop in a K&N, adjust timing and keep the engine maintained.

2) put the highest flowing exhaust you can on it.

3) Drive it like you stole it.

I autocrossed my straight six 95 for a bit. it was a blast. the torquey engine pulled me through the corners. The engine ran beautifully the moment i pulled it out, it just had to make way for something a lot bigger.

daily driver, i'll always take a six.

Oct 16, 2014 | 08:22 PM

#11

xrsfsho

Senior User

Joined: May 2014

Posts: 482

Likes: 1

From: san jose

The PO hacked the exhaust off right after the cab directly behind the muffler. Sounds awesome. But I would like to get a complete system when I had the dough. There is a small exhaust leak to at the gasket it sounds like