roller or not?
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roller or not?
I have an 89 ford e-250. I just bougt the van and it needed an engine so i bought an engine (long block)that is from a 94-97.
just wondering if this is a roller engine or not bc i want to replace upgrade the cam before I put it in.
just wondering if this is a roller engine or not bc i want to replace upgrade the cam before I put it in.
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Joined: May 2003
Posts: 11,141
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From: south louisiana
A 94-97 E or F series 5.0 will be a roller cammed engine. Cam will be an F4TE roller. You might want to rethink swapping it then. This cam really only needs 1.7 rockers to improve it. Lift will equal the GT/HO roller, duration is a tad less, ovelap is also less, overlap is also less than the HO roller making it a better torque producer. That's more useful in a van. If it's a 94-97 351W, then it may or may not have a roller cam. Pull one valve cover and a rocker, pull the pushrod out and measure it. Roller 5.0 rods are 6.25" long. A roller 351 would be 1.3" longer (that's the difference in deck height)
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so when the engine arrives I shold measure the push rod and if it is 7.55" long its a roller cam but if its not then its a flat tappet.
If it is then I should just replace the rockers with 1.7. ?
If it is not then I should replace the cam. is this correct?
will changing the rockers affect the drivability of this speed density controlled engine?
and would it be good to change to a roller cam in this engine if it dosent have one?
Just to let you know I am not looking for a street rod just some more torque for the mountians here in Western North Carolina.
thanks
If it is then I should just replace the rockers with 1.7. ?
If it is not then I should replace the cam. is this correct?
will changing the rockers affect the drivability of this speed density controlled engine?
and would it be good to change to a roller cam in this engine if it dosent have one?
Just to let you know I am not looking for a street rod just some more torque for the mountians here in Western North Carolina.
thanks
Last edited by jklennon; Dec 25, 2006 at 05:10 PM.
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Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
Now you're saying the engine you bought is a 351 ? You didn't say before. A 94-97 351 should have a block casting number F4TE. If it's got a roller cam it will still be the F4TE roller. I'd just upgrade the rockers to 1.7 rollers (Crane Energizers or a used set of Ford/Crane "Cobra" rockers) these are an easy 15 hp upgrade, roller cam or not. If it's a flat tappet cam, then the upgrade is up to you. The F4TE block is roller ready, some got roller cams some didn't. You have few upgrade choices with a Speed Density system without computer upgrades. Comp Cams has 2 or 3 grinds (roller and flat)that work with the stock computer. Crane probably does also. The choice is yours there. I personally think it is, if you've got a roller block to start with.
