Intake
Postmaster
Joined: May 2002
Posts: 3,241
Likes: 3
From: Broken Arrow, OK
The best bang for the buck is to put your money back in your pocket. There are no aftermarket intakes available for the EFI 4.9. AFAIK, there are only two that have even been prototyped and they haven't been tested yet.
Junior User
Joined: Dec 2007
Posts: 61
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From: Broken Arrow, OK
What about that guy who made those "Pro-Comp Tuned" headers? The ones that looked they were made of PVC? Redneck engineering something or other. I'll bet he could fabricate a really nice equal length runner intake.
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Joined: Dec 2007
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From: Broken Arrow, OK
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Senior User
Joined: Aug 2007
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Originally Posted by Dobbinicus
What about that guy who made those "Pro-Comp Tuned" headers? The ones that looked they were made of PVC? Redneck engineering something or other. I'll bet he could fabricate a really nice equal length runner intake.
Yeah theres no intake available for the 300 EFI. its already a well designed motor, theres not a whole lot you need to do to it. So take Silver Streak's advice and put it back in your pocket and save it for something worthwhile.
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Postmaster
Joined: Dec 2006
Posts: 3,603
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From: Spokane, WA
The EFI intake is actually quite the set up. Some have even (don't know if anyone has or not) considered using at least the lower half with a plenum on it for mounting a carb. I've been looking at that myself or even adapting a carb mount to the whole thing.
Freshman User
Joined: Dec 2004
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If you really want to get a little more air flow through your intake, get a throttle body off of a 302. They are identical except for the size of the inlets. I just put one on my '89 bronco. You're gonna have to do a little fab work yourself though. Nobody makes a throttle body spacer/adapter to fit a 302tb onto a 300 intake, also, you're gonna want to keep the IAC valve and the TPS off the 300, the wiring is slightly different. I may be persuaded to take mine apart so I can post some pics of the whole thing.
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Joined: Dec 2004
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Have you tried it before? I didn't think so. It does actually give me a little more power, but the whole reason for trying this was to improve fuel economy, which I won't know exactly what the outcome is for a few more days when I've driven more than 60 miles and get a little more of an average figure, but it does seem to be helping there as well, I'll post more when I have the numbers. I wish I had access to a dyno tho so I could've seen what the actual numbers were before and after.
Postmaster
Joined: Mar 2002
Posts: 3,545
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From: Coal Region
u dont see any increase in power. what u are feeling is a slight increase in throttle response because the engine is seeing more air sooner. but u are also reaching the max allowed useable air sooner as well. while it may feel like u have gained 25 RWHP, all it did was change how much air is let in at a certain throttle position. u are not letting any more air in.
Postmaster
Joined: May 2002
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From: Broken Arrow, OK
Originally Posted by 89whitenight
It does actually give me a little more power,
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Joined: Dec 2004
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Does anyone know where I can get to a Dyno around Chico, CA and how much it will cost? I don't have a lot of extra cash laying around, but I am curious to see what it's done myself and if it'll prove a point either way I'd be interested to check it out.