Graduated! :-)
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Graduated! :-)
Greets, fellow Ford truckers...
I finally got through the L-A-S-T of the emissions testing BS with my 1984 F250 4x4. She's got a T-18 4-spd. and the big 300 CID six engine. She will be 25 years old next year and beyond the "come in, let us check it out, and pay us $15 for the privilege" nonsense. WHOOPIE! Here is where the real fun begins!! :-)
Ed
I finally got through the L-A-S-T of the emissions testing BS with my 1984 F250 4x4. She's got a T-18 4-spd. and the big 300 CID six engine. She will be 25 years old next year and beyond the "come in, let us check it out, and pay us $15 for the privilege" nonsense. WHOOPIE! Here is where the real fun begins!! :-)
Ed
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From: Maryland
In MD they lowered the hop-up age to 20 years. Historic tags are $51 for two years. I've got 3 historic vehicles
. BTW, my 300 always blew the numbers, never failed. The key to that motor was tune up and keeping a fresh carb kit in it. They like to loosen up at the base plate and leak fuel internally at the accelerator pump diaphram.
. BTW, my 300 always blew the numbers, never failed. The key to that motor was tune up and keeping a fresh carb kit in it. They like to loosen up at the base plate and leak fuel internally at the accelerator pump diaphram.
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I always keep my truck well tuned but it just could not get past the HC emissions at idle. It was around 550 ppm and they wanted 220 ppm or less. I'm sure that the cat is the problem. It is 24 years old, after all, and HC / CO reduction is THE big thing with cats. Oh, well. I no longer have to worry about the cat... or even having one!
As to the carb kit, that is probably a good idea. The truck runs good and gets good gas mileage, so it's not like its losing a lot of fuel internally. Still, a carb kit would be a good idea. If I wasn't strongly considering a small 4-bbl. carb and a new intake manifold for this truck, I would definitely be more interested in a carb rebuild.
Ed
As to the carb kit, that is probably a good idea. The truck runs good and gets good gas mileage, so it's not like its losing a lot of fuel internally. Still, a carb kit would be a good idea. If I wasn't strongly considering a small 4-bbl. carb and a new intake manifold for this truck, I would definitely be more interested in a carb rebuild.
Ed
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From: Maryland
I put EFI manifolds, a walker down pipe, new cat and walker dynomax cat-back system on my 300. I did the upgrade mainly because my manifold was cracked and leaking and the exhaust system was trashed too. It runs much better now, even picked up some upper RPM power. Adding a manifold and 4V would be sweet. Check the 300 forums for the EFI/walker downpipe setup, header performance without the leaks...
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I put EFI manifolds, a walker down pipe, new cat and walker dynomax cat-back system on my 300. I did the upgrade mainly because my manifold was cracked and leaking and the exhaust system was trashed too. It runs much better now, even picked up some upper RPM power. Adding a manifold and 4V would be sweet. Check the 300 forums for the EFI/walker downpipe setup, header performance without the leaks...
The EFI manifolds look sweet and should do the trick nicely. What year EFI's did you get? Is there any reason to prefer one year vs. another? I would assume that any of them in the 87-91 era would be OK.
I want to do some light upgrades without getting inside the engine right now. With good maintenance, these 300s run real well for about 200-250k miles, so with only 145k on my truck, it should be good for some time to come.
If I ever do an engine rebuild, that will be the time to have the heads reworked for better breathing and a somewhat better cam installed that can maximize the performance of the new intake and exhaust systems.
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From: Maryland
To tell the truth I'm not sure on the year of my manifolds, I found them in the u-pull-it yard. Someone went to the trouble to remove them and the head from a truck only to find that the head had a crack in one of the combustion chambers! He left it all laying in the bed of the truck. In any event, I think they're all the same. The EFIs have extra bolts on the head/manifold interface and a casting bump that needs to be removed so some dremmel or angle grinder work is required but it's no big deal The key to the upgrade is the Walker downpipe, nice and easy. Serch the exhaust forum for the PN.
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Sounds like you got into a nice situation with the EFIs... just ready and waiting for pickup.
Yes, I have heard that the EFIs have a bump or two that needs to be ground off. I have a nice little 4.5" 11k rpm hand-held grinder that will handle that part nicely.
I looked on-line for the "Walker downpipe" but am not sure if I found the right part. They wanted $160 for this, which seems pretty durned spendy for a 3 foot long piece of pipe. Maybe I am looking at the wrong thing? Will search the archives on this site to see if there is another part that I should be finding instead of this.
If that is the right part, then maybe single pipes from each EFI manifold to a 2-in / 2-out cat shell would work as well and be cheaper.
My son has a nice tube bender and a welder that he is dying to try out. If we need to, we can fab the whole exhaust system from the EFIs back. We'd use a pair of good store-bought mufflers, though.
Yes, I have heard that the EFIs have a bump or two that needs to be ground off. I have a nice little 4.5" 11k rpm hand-held grinder that will handle that part nicely.
I looked on-line for the "Walker downpipe" but am not sure if I found the right part. They wanted $160 for this, which seems pretty durned spendy for a 3 foot long piece of pipe. Maybe I am looking at the wrong thing? Will search the archives on this site to see if there is another part that I should be finding instead of this.
If that is the right part, then maybe single pipes from each EFI manifold to a 2-in / 2-out cat shell would work as well and be cheaper.
My son has a nice tube bender and a welder that he is dying to try out. If we need to, we can fab the whole exhaust system from the EFIs back. We'd use a pair of good store-bought mufflers, though.
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In MD they lowered the hop-up age to 20 years. Historic tags are $51 for two years. I've got 3 historic vehicles. BTW, my 300 always blew the numbers, never failed. The key to that motor was tune up and keeping a fresh carb kit in it. They like to loosen up at the base plate and leak fuel internally at the accelerator pump diaphram.
. BTW, my 300 always blew the numbers, never failed. The key to that motor was tune up and keeping a fresh carb kit in it. They like to loosen up at the base plate and leak fuel internally at the accelerator pump diaphram.
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Thanks much, Bern. I appreciate the feedback. I did a bit of searching with this P/N and found a pic of it on this site:
https://www.ford-trucks.com/forums/2...pipe-pics.html
From the angle that the pic was taken at, it is hard to tell if this pipe has a single or dual connection to the exhaust manifolds. I would assume that it has 2 but could not tell from this pic.
Yeah, $58 is WAY better than the $160 I found on-line. In fact, it is reasonable and not outrageous. That is why I was wondering if I had the right part. :-/
I checked RockAuto's web site but they had no pic. Also checked with AutoZone's web site but they had no listing for this part. Oh, well. I'm sure I can order it now that I know what I am looking for. Thanks for the assist.
Ed
https://www.ford-trucks.com/forums/2...pipe-pics.html
From the angle that the pic was taken at, it is hard to tell if this pipe has a single or dual connection to the exhaust manifolds. I would assume that it has 2 but could not tell from this pic.
Yeah, $58 is WAY better than the $160 I found on-line. In fact, it is reasonable and not outrageous. That is why I was wondering if I had the right part. :-/
I checked RockAuto's web site but they had no pic. Also checked with AutoZone's web site but they had no listing for this part. Oh, well. I'm sure I can order it now that I know what I am looking for. Thanks for the assist.
Ed