93 5.0 Build
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Cross-Country
Joined: Dec 2004
Posts: 93
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93 5.0 Build
I am building a 93 5.0 to put in an 83 F-100. Converting to carb and duraspark. I'm strongly considering having the engine rebuilt as a 93 5.0 HO with a Melling stock HO camshaft as it seems like the most bang for the buck in terms of rebuild cost. I want more power than the stock 93 5.0 but want smooth idle and stock stall speed converter. The trans will be an AOD and I'll have either 3.55 or 3.73 gears in the rear end.
I know guys are running stock 5.0 HOs in their trucks. How well does it perform? BTW, the engine core is free, thus why I'm not doing a 351W.
I know guys are running stock 5.0 HOs in their trucks. How well does it perform? BTW, the engine core is free, thus why I'm not doing a 351W.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Ford should have used the 5.0HO in these trucks from the beginning, the version we got is just needlessly strangled. That is a thumbs up from me, under no circumstances should anyone rebuild one of these truck motors with a stock spec cam.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
The HO cam was supposed to be 210deg duration @ 0.050", 266deg seat to seat, 0.444" lift with 1.6 rockers, and 115deg LSA but production tolerances resulted in quite a bit of variance from that. It's a '90's emissions friendly production cam so yeah it leaves some power on the table, but what else is new.
Cargo Master
Joined: Oct 2020
Posts: 2,667
Likes: 780
The stock HO cam is 210@ .050 on a 115 lobe sep in on a 113 ICL and I get 280 @ .006 seat timing on the ones that I've plotted. You need a cam that's around 200 @ .050 on about a 108 lobe sep in the engine on about a 106 ICL.
I don't know if the trucks used the same cam as the non HO 5.0's used in the cars or not. But the non HO is 181 and 195@ .050 on a 108 lobe sep it has 257 and 276 degrees @ .006. It is both right and wrong for your application. The lobe sep is about right but the duration isn't enough. I bet a cam ground with that exhaust lobe on both sides would be pretty interesting. I'm not sure exactly what centerlines were used on the factory cams besides the HO but I'd assume that it is probably around a 109-111 or so.
I don't know if the trucks used the same cam as the non HO 5.0's used in the cars or not. But the non HO is 181 and 195@ .050 on a 108 lobe sep it has 257 and 276 degrees @ .006. It is both right and wrong for your application. The lobe sep is about right but the duration isn't enough. I bet a cam ground with that exhaust lobe on both sides would be pretty interesting. I'm not sure exactly what centerlines were used on the factory cams besides the HO but I'd assume that it is probably around a 109-111 or so.
Thread Starter
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Cross-Country
Joined: Dec 2004
Posts: 93
Likes: 1
Any opinions on this Comp cam:
Brand:
COMP Cams
Manufacturer's Part Number:
35-512-8
Intake Duration at 050 inch Lift:
206
Exhaust Duration at 050 inch Lift:
212
Duration at 050 inch Lift:
206 int./212 exh.
Advertised Intake Duration:
258
Advertised Exhaust Duration:
264
Advertised Duration:
258 int./264 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.480 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.480 in.
Valve Lift with Factory Rocker Arm Ratio:
0.480 int./0.480 exh.
Lobe Separation (degrees):
114
Or the stock Exploder 5.0 Cam:
1996-2001 Explorer (F4TE-6250-BA)
256 / 266
186 / 197
0.422 / 0.448
116
Brand:
COMP Cams
Manufacturer's Part Number:
35-512-8
Intake Duration at 050 inch Lift:
206
Exhaust Duration at 050 inch Lift:
212
Duration at 050 inch Lift:
206 int./212 exh.
Advertised Intake Duration:
258
Advertised Exhaust Duration:
264
Advertised Duration:
258 int./264 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.480 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.480 in.
Valve Lift with Factory Rocker Arm Ratio:
0.480 int./0.480 exh.
Lobe Separation (degrees):
114
Or the stock Exploder 5.0 Cam:
1996-2001 Explorer (F4TE-6250-BA)
256 / 266
186 / 197
0.422 / 0.448
116
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Cargo Master
Joined: Oct 2020
Posts: 2,667
Likes: 780
Any opinions on this Comp cam:
Brand:
COMP Cams
Manufacturer's Part Number:
35-512-8
Intake Duration at 050 inch Lift:
206
Exhaust Duration at 050 inch Lift:
212
Duration at 050 inch Lift:
206 int./212 exh.
Advertised Intake Duration:
258
Advertised Exhaust Duration:
264
Advertised Duration:
258 int./264 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.480 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.480 in.
Valve Lift with Factory Rocker Arm Ratio:
0.480 int./0.480 exh.
Lobe Separation (degrees):
114
Or the stock Exploder 5.0 Cam:
1996-2001 Explorer (F4TE-6250-BA)
256 / 266
186 / 197
0.422 / 0.448
116
Brand:
COMP Cams
Manufacturer's Part Number:
35-512-8
Intake Duration at 050 inch Lift:
206
Exhaust Duration at 050 inch Lift:
212
Duration at 050 inch Lift:
206 int./212 exh.
Advertised Intake Duration:
258
Advertised Exhaust Duration:
264
Advertised Duration:
258 int./264 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.480 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.480 in.
Valve Lift with Factory Rocker Arm Ratio:
0.480 int./0.480 exh.
Lobe Separation (degrees):
114
Or the stock Exploder 5.0 Cam:
1996-2001 Explorer (F4TE-6250-BA)
256 / 266
186 / 197
0.422 / 0.448
116
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Thread Starter
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Cross-Country
Joined: Dec 2004
Posts: 93
Likes: 1
So here is a list of the cams that suck according to you:
Mustang HO factory cam
Comp Cams smallest 5.0 grind
Exploder 5.0 factory cam
They only recommendation you have made is "the stock non-HO is closest" but the engine is a dog with the stock cam. We all know that.
Make an actual recommendation for an off the shelf grind, not some mythical custom grind that doesn't exist.
Thanks.
Mustang HO factory cam
Comp Cams smallest 5.0 grind
Exploder 5.0 factory cam
They only recommendation you have made is "the stock non-HO is closest" but the engine is a dog with the stock cam. We all know that.
Make an actual recommendation for an off the shelf grind, not some mythical custom grind that doesn't exist.
Thanks.
Cargo Master
Joined: Oct 2020
Posts: 2,667
Likes: 780
So here is a list of the cams that suck according to you:
Mustang HO factory cam
Comp Cams smallest 5.0 grind
Exploder 5.0 factory cam
They only recommendation you have made is "the stock non-HO is closest" but the engine is a dog with the stock cam. We all know that.
Make an actual recommendation for an off the shelf grind, not some mythical custom grind that doesn't exist.
Thanks.
Mustang HO factory cam
Comp Cams smallest 5.0 grind
Exploder 5.0 factory cam
They only recommendation you have made is "the stock non-HO is closest" but the engine is a dog with the stock cam. We all know that.
Make an actual recommendation for an off the shelf grind, not some mythical custom grind that doesn't exist.
Thanks.
If you're into Comp try using a 3105 lobe on the intake and exhaust. Have them put that on a 108 lobe sep. That's 200@.050 duration. It's a .310 lobe so it is going to give you .496 lift. The seat timing given is 256 degrees and it is 118 degrees at .200 lift. It actually has a little more duration at .200 than the next larger lobe 3106 that's 206@ .050.
Sometimes cam grinders' selection of short duration lobes can be limited but any grinder should have something pretty close.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
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