What is the difference between the lighning 351 and regular production 351s - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 9 Old 01-20-2010, 11:18 PM Thread Starter
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What is the difference between the lighning 351 and regular production 351s

If I were to find a lightning motor could I just stick a decent 4 bbl intake and carb on it and it be a decent motor for a non EFI application

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post #2 of 9 Old 01-20-2010, 11:54 PM
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Those are roller blocks from 94 and up I believe.Some say 93 also.F4te

I am thinking they were not roller cammed though.
Someone will chime in about it better than I can.

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post #3 of 9 Old 01-21-2010, 12:27 AM
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Yeah it's got GT40 heads but if your going carb pull the small cam and put a big bump stick in it. Yeah the very early 93's have the non roller blocks, the late 93-95 have roller ready blocks. Meaning it's drilled and tapped for the hold down and the lifter bores are right for the dog bones.

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post #4 of 9 Old 01-29-2010, 03:40 PM
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post #5 of 9 Old 01-31-2010, 12:23 AM
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the 93 is not a full roller bloce but it can be made into a roller.if you want one thats already a roller get a F4TE out of a 96 van,bronco
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post #6 of 9 Old 01-31-2010, 01:08 PM
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Quote:
Originally Posted by 95Blitz View Post
Yeah it's got GT40 heads but if your going carb pull the small cam and put a big bump stick in it. Yeah the very early 93's have the non roller blocks, the late 93-95 have roller ready blocks. Meaning it's drilled and tapped for the hold down and the lifter bores are right for the dog bones.
This is the correct answer.

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post #7 of 9 Old 02-16-2010, 12:28 AM
 
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The Lightning engine was a hydraulic flat-tappet camshafted 351. The Ford part number to that cam was an early 70's part number, so the cam is not that hot of a cam. It has cast iron GT40 heads, although the Cobra got the 1.7 roller rockers, the Lightning uses 'sled' style regular 1.6 rockers. The other guys are correct about the F4TE being roller cam ready. Honestly, other than the heads (and intake) they are not that much different from a regular production 351.

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post #8 of 9 Old 02-21-2010, 12:58 AM
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I have a '95 Lightning and a regular '95 F-150 with the 351W in it. In addition to the info. posted above:

Both trucks have the F4TE block, but only the regular F-150 has a roller cam installed in it from the factory.

Stock horsepower numbers are 240 for the Lightning, and 210 for the regular F-150.

The Lightning has dish style hypereutectic pistons and an 8.8:1 compression ratio, but I don't know what the regular F-150 has, though I've read that the compression ration is the same, and they always seem to mention the Lightning's hypereutectic pistons in a way that makes it sound like the regular 351W doesn't have them.
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post #9 of 9 Old 03-03-2010, 10:30 PM
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Quote:
Originally Posted by 4200lb.Girlfriend View Post
The Lightning has dish style hypereutectic pistons and an 8.8:1 compression ratio, but I don't know what the regular F-150 has, though I've read that the compression ration is the same, and they always seem to mention the Lightning's hypereutectic pistons in a way that makes it sound like the regular 351W doesn't have them.
That's because the regular F series had cast pistons, and the Lightnings had hypereutectic pistons. A stock Lightning motor with a dual plane intake, 750 carb and a hotter camshaft would really wake up..... probably to the tune of 80HP and 40-50lb ft torque.

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