will my 92 step side f-150 take a cam shaft and roller rockers from a 95? Both engines are 5.0. I`m not sure if the 92 is a roller engine or not,does the lifters and that holder in the centre bolt in to a 92 block.The 92 does or is wired for the old firing order,since I will be putting a 95 computer and wiring harnes in it,it will get the 95 firing order...so are the blocks the same? thanks

 

Both are roller motors and they have the same firing order.

 

Thanks, maybe thats why this one pops back through the intake, it has the old firing order, I just put it on the road,I`ve been restoring it for 2 years,when I got it out and runing, it ran ok, but backfired,I figured it is timing but not foiring order,,,I`m gonna check that first before tearing it down......

 

If the 92 is a roller ? , it won't have the same FO as the 95 , the 95 uses the 302 HO order , the 92 block will be roller ready so the lifter hold down will bolt right up ...

 

They changed to roller motors in late 91/92. No clue what FO means

 

FWIW I pulled a 5.0 efi from a 92 econoline and it was a non-roller with the old firing order. You could pull the distributor and see if it's cast or steel or pull the intake to see if it's a roller.

 

Firing order...............

 

Your '92 uses the old 302 firing order and should have a roller cam in it but that's not 100% certain so you'll have to look.. pull the drivers side valve cover off and shine a light down the front pushrod hole, if you see a dogbone around the lifter you have a roller.
The '95 cam will install in your motor.. blocks are the same so even if yours doesn't currently have a roller cam all the parts will transfer.

 

Thanks for the quick replies,Its a project I`ll dig into this winter,I have all the cam and head parts....

 

The heads on those two motors(assuming they're both truck motors) should be the same though again you're gonna have to check to be sure. There should be a capital letter cast into the head at one of the top corners, R = E5TE, S = E6SE, and T = E7TE. Most '87+ motors will have E7TE heads which are better than the other two.. better port design and higher compression. Rocker arms on these motors were also the same 1.6 ratio stamped steel as well so there's no point changing those if you don't have to.
The roller cam assembly includes the cam, lifters, pushrods, and spider assembly. The pushrods are shorter than the flat tappet version because the lifters are longer, but if your motor already has a roller cam the only thing that needs to be changed is the cam all the other parts are identical, though if your motor has a lot of miles on it and the donor motor doesn't then swap the lifters too.

 

could a person run say the E7TE with the E5TE heads together on one engine?

 

Not a good idea, one side of the motor would have 8.3 static CR while the other has 9:1.

 

ok... what is static CR? tryin to learn somethin new

 

Static CR is the compression ratio calculated by dividing total cylinder volume with the piston at bottom dead center by the total volume with the piston at top dead center. The E5 heads are from the smog era and have massive 69cc combustion chambers while E7 heads usually have 62cc chambers, so if you were to combine the two heads on one motor it would have a pretty bad shake or vibration.

 

ok thanks, learn somethin new everyday