351w Cam Selection
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Senior User
Joined: Sep 2004
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From: Martins Creek, PA
351w Cam Selection
Hey guys,
I've been looking through the threads here and I've found 100's of suggestions for cam selection, but most seem to be for the 302 or even the 460.
I'm looking for a mild upgrade, computer friendly, cam for my 1994 F250 5.8L.
Thanks in advance!
I've been looking through the threads here and I've found 100's of suggestions for cam selection, but most seem to be for the 302 or even the 460.
I'm looking for a mild upgrade, computer friendly, cam for my 1994 F250 5.8L.
Thanks in advance!
Postmaster
Joined: Mar 2008
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From: Des Moines, Iowa
if you don't have maf 35-255-5 comp cam. After much research this is the best option out there right now. Crane had a better one but they are out of businnes right now. it will probably run you $150-$200... Summit racing is just as cheap as everyone else.
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Senior User
Joined: Sep 2004
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From: Martins Creek, PA
Hi Conanski
I've seen your recommendations in other posts, and I did look up the Comp 35-349-8 previously. Now again, in Summit, it lists it as a 302 cam. I know the firing orders are different, will that affect my ECM?
I've seen your recommendations in other posts, and I did look up the Comp 35-349-8 previously. Now again, in Summit, it lists it as a 302 cam. I know the firing orders are different, will that affect my ECM?
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Senior User
Joined: Sep 2004
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From: Martins Creek, PA
Ok, maybe to answer my own question............. Back in my Mustang days, I remember the 5.0 HO have the 351 firing order. So if my assumtion is correct, the cam you suggested should be fine.....?! Is this correct?
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Senior User
Joined: Sep 2004
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From: Martins Creek, PA
Conanski,
I installed my new cam (35-349-8)
Entire valve train is stock, otherwise.
After torquing my rockers down I noticed when the lifters are all the way down, the pushrods have play. Do I need longer pushrods?
I installed my new cam (35-349-8)
Entire valve train is stock, otherwise.
After torquing my rockers down I noticed when the lifters are all the way down, the pushrods have play. Do I need longer pushrods?
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Joined: Jun 2006
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From: Ottawa, Ontario
The motor should not need anything but stock length pushrods with this cam, the lifters have collapsed if you have cycled the engine in this process so some play at the pushrods is normal at this point. You could prime the oil pump with an electric drill(with distributor removed) to pump up the lifters, that should remove all the play from the system.
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Senior User
Joined: Sep 2004
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From: Martins Creek, PA
The engine is still on the stand, haven't put the oil pan on yet. Afraid to put to much together until I figure this out. I did have a Co-worker hold a container of oil under the pickup tube, and primed it until oil was coming from the lifters. It was pushing all the break in lube out so I stopped. The play got better, but I don't think there should be ANY! I can prime it again until the oil goes up the push rid. I guess the loss of lube won't matter at start up if its well primed.
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Senior User
Joined: Sep 2004
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From: Martins Creek, PA
Ok I just put the timing cover and oil pan on. poured in oil, and primed it until oil was coming out of the rockers. Some of the pushrods still have play, not all but a few.
I think my best option at this point is adjustable rockers. I'm looking at the conversion and rockers from Summit. What do you think, good idea?
Proform Parts 66911 - Proform Extruded Aluminum Roller Rocker Arms - Overview - SummitRacing.com
Crane Cams 36655-16 - Crane Rocker Arm Guideplate Conversion Kits - Overview - SummitRacing.com
or is there a cheaper way?
I think my best option at this point is adjustable rockers. I'm looking at the conversion and rockers from Summit. What do you think, good idea?
Proform Parts 66911 - Proform Extruded Aluminum Roller Rocker Arms - Overview - SummitRacing.com
Crane Cams 36655-16 - Crane Rocker Arm Guideplate Conversion Kits - Overview - SummitRacing.com
or is there a cheaper way?
Thread Starter
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Senior User
Joined: Sep 2004
Posts: 197
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From: Martins Creek, PA
but the lifters are pumped up, or am I missing something? I can prime it longer if that will do it. The plunger "looks" like it is all the way up.
I'm getting frustrated, so thanks for helping me through this!
I'm getting frustrated, so thanks for helping me through this!