Fuel Injection
Cheepjeep85
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thought they started the HO head in 92
Fuel Injection
- Thread starter 81laredo
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slimer
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You're probably right.
Oh, you'll need the intake and exhaust manifolds as well.
Oh, you'll need the intake and exhaust manifolds as well.
81laredo
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yes, thanks to the earlier posts I was able to make a good decision about the years that I wanted to look at. I am told that the High output head is from '91 on. I can get the head later.
The Head on the '93 cannot be sold, it is most likely junk anyway. Anyone know the correct casting numbers to look for?
The Head on the '93 cannot be sold, it is most likely junk anyway. Anyone know the correct casting numbers to look for?
Cheepjeep85
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i don't know them but i do recall seeing them in some of the more popular/commonly used write ups on the head swap read through a few and see if you can find em. let me know if you need links
slimer
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7120 and 0163 (?) are the better ones head castings from what I've read on the internet. However, I think JP magazine debunked that in that their November issue.
Cheepjeep85
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yeah they had an article on jeep performance myths is that the one you were talking about slimer
slimer
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Yeah. There's a good article on the web that explains why some are more preferrable than others. It references the size of the exhaust valves in relation to the intake valves. It seemed to make sense to a novice like me.
Cheepjeep85
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that issue is still on the back of the throne lol
jarbidge09
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I have 78 CJ5 AMC 258 i6 / 4.2l I put in the mopar with it you get a exhaust and intake manifold that are not mated. yea it is a little more expensive but it is well worth it I have way more power and get 20-22 mpg if I do not put my foot into it. It is legal in calif.
Sasquach
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Good to hear, That $$$ is a hard one to swallow though for me. How are you checking your milage? I know my speedo is way off and most probably are with all the gearing changes and tire sizes people use. I have yet to check but with the ca. AMC 258 i6 / 4.2l I have it seems pretty bad and no where near 20-22 so that would be welcome just for the better range issue.
Have you had it smoged yet? I know they say Ca. legal and all.
Old Dog
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sorry don't know about the 20, but where did you find the ones for the 300?
jarbidge09
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I am not sure what it is called but they have a numbered tooth gear you can swap out for your stock gear that goes into the tranny were the speedo connects that will give you the right reading. I have had it smogged 3 times passes no problem.
jarbidge09
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BusaDave9
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You can get speedometer gears for the Dans 300 at Raptor transmissions. Try this link: Speedometer Gear, Speedometer Gears, Ford, GM, Dodge 700R4
It's a big web page. Scroll down half way to Dodge / Jeep Speedometer Gears
jarbidge09
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BusaDave9
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We are getting off the original topic of this thread but to find the correct speedometer gear take the number of teeth on your present speedo gear and change it by the same percent as your speedometer is off. If your speedometer is too high then you need more teeth.
In other words if your present speedo gear has 37 teeth and your speedometer is 8% too high then you need a gear with 40 teeth.
In other words if your present speedo gear has 37 teeth and your speedometer is 8% too high then you need a gear with 40 teeth.
Sasquach
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1952 M100 trailer
Do you know how the law reads with respect to that?
I've read horror stories on guy's doing a 4.0 throttle body upgrade and that is mopar stuff too. One story from a guy who got dragged over the coals from the ref then he just decided to go to a regular smog station and was passed.
I was really wanting to go efi but cooled down a bit after reading about the dificulty with inspection, maybe you only hear the bad stuff?
CJ
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Try Nevada Speedometer 1-775-358-7422, they are where I got my gear from.