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4 plug head


scrapper

scrapper

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V8 Engine Swap
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central IL
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1994
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ford
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V8
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1975 302
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Automatic
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33/12.50/15
I have a four plug head that has a roller cam in it. I'm not sure if its any good but was going to drop it off at a machine shop to get it checked out. Not really sure if it is a factory roller or one that was swapped. How can I tell the year? If I swapped it to a hydraulic cam do I just have to change the rocker arms? I'm getting rid of the FI and going back to a carb. I was trying to find out the cost differences for installing a after market roller cam or a hydraulic cam. Thanks for any info.
 


tomw

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If you look near the top of this pile of threads, there's a tech article that describes Lima engines from oldest to newest, etc. The roller was factory from 89-94, and 95-00 with differences in valve stem diameter.
If you don't want it, I'll take it. All valve clearances in factory trim are hydraulic in that the support on the non-valve end of the cam follower is oil pressure adjusted.
If you want after-market, Esslinger and Racer Walsh are two that may have something to fit your needs. If you go away from EFI, expect less mpg, performance, and possibly a change in torque curve from removal of the upper intake.
tom
 

Mark_88

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scrapper

scrapper

Active Member
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U.S. Military - Veteran
V8 Engine Swap
Joined
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28
Location
central IL
Vehicle Year
1994
Make / Model
ford
Engine Type
V8
Engine Size
1975 302
Transmission
Automatic
2WD / 4WD
2WD
Total Lift
6+3
Tire Size
33/12.50/15
Thanks for the help. I was thinking if I could use the same lifters if I swap back to a non roller it would be a bit cheaper. If it is a after market cam any ideas where or what markings it would have on it? Thanks again
 

tomw

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toenails of foothills NW of Atlanta
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1985
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ford
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2.3 (4 Cylinder)
Engine Size
lima bean
Transmission
Manual
2WD / 4WD
2WD
My credo
vertical and above ground
The factory supports are all the same from what I know. They are also all hydraulic.

Only after-market cam/follower/support combinations were made with adjustable clearance. I believe there was a threaded tip & lock nut on the upper end of the support for mechanical lifter 2.3 cams. I do not own one.
If your roller cam is in good condition, it should last almost forever as they don't have the rubbing friction that followers had that preceded them.
Most non-OEM would not have a FoMoCo stamp or part number on the end or cast into them.
tom
 
scrapper

scrapper

Active Member
Supporting Member
U.S. Military - Veteran
V8 Engine Swap
Joined
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Messages
512
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63
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28
Location
central IL
Vehicle Year
1994
Make / Model
ford
Engine Type
V8
Engine Size
1975 302
Transmission
Automatic
2WD / 4WD
2WD
Total Lift
6+3
Tire Size
33/12.50/15
ok I will give it a look. I'm putting a crank sensor on it right now,in the mud. I got to get a new garage... Thanks
 
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