I have a stock 351M reman that has about 3,000 miles on it. It runs fine, but I'd like a little more pep. It is used for daily driving to work and occasionally (ie, once a year or so) towing about 5,000 lbs. The heads are stock so there's no need to put in a cam bigger than what the heads can flow because they will not be worked on. I would also like to put on a aluminum intake and 4-v carb and some headers.

Stupid question, but do you always put in new lifters with a new cam? I only ask because the rebuild only has 3000 miles.

I'm looking for cam recommendations for cam and intake. I've heard comp HE 268 is good. I don't understand the performance differences between single plane and dual plane beyond the dual plane seems to be more desirable, and more expensive. However, since the heads are stock would dual plane be a wasted money over single plane. Edelbrock seems to be the only manufacturer I've seen selling intakes for 351M.

TIA
Sam

 

There are people here who know what you need and are friendly too We share the same engine basically (mine is a 400). Shazam has a neat truck

 

If i remember right Edlebrock sells a package for the 351m that includes cam(i believe that you get new lifters when you buy a new cam), matching intake, and carb i think i'm not sure but i have heard a lot of good things about it. you can always put a 400 crank in it to.

Cody, Coutts Alberta

82' Flareside: zoom zoom doesn't even begin to describe it, 2/4 Drop, Soon to have 325hp 351 Clevo (maybe more,in a 3600lb truck)Backed by a C6 with a 2000 rpm stall and a 3.50 9 incher, American Racing AR-23 (series 23) wheels, Upgraded interior, Sony Xplod stereo

 

>I have a stock 351M reman that has about 3,000 miles on it.
>It runs fine, but I'd like a little more pep. It is used
>for daily driving to work and occasionally (ie, once a year
>or so) towing about 5,000 lbs. The heads are stock so
>there's no need to put in a cam bigger than what the heads
>can flow because they will not be worked on. I would also
>like to put on a aluminum intake and 4-v carb and some
>headers.

The good news is that 351C/M/400 heads flow extremely well right out of the box so you can put a significantly higher performance cam in it and not exceed the capabilities of the heads.

>Stupid question, but do you always put in new lifters with a
>new cam? I only ask because the rebuild only has 3000
>miles.

Yes

>I'm looking for cam recommendations for cam and intake.
>I've heard comp HE 268 is good. I don't understand the
>performance differences between single plane and dual plane
>beyond the dual plane seems to be more desirable, and more
>expensive. However, since the heads are stock would dual
>plane be a wasted money over single plane. Edelbrock seems
>to be the only manufacturer I've seen selling intakes for
>351M.

Weiand and E'brock both make dual plane intakes for the 351M/400. You definitely want a dual plane for regular street use. Single planes are more suited to high RPM performance applications. If you're going to stay with the stock valve springs then stay under .500" total lift and you'll be pretty safe.

 

Thanks guys, pretty much what I was looking for.

Oh, one more thing, I've heard headers on the 4x4 with a C-6 are a tight fit (mine's a 78), any recommendations on what headers will be a relatively easy install?

 

...Don't get too carried away with the cam if you have stock compression. Try running more timing advance. 650cfm Holley, Edlebrock Performer, headers, K&N filter all are good choices.

 

I'm no expert but this is what I've heard about your engine.

First off, the cam in the 351M is supposed to be a pretty good part, better than a 400 cam. If that were mine, I'd spend time and money elsewhere. Since that's 'only' a 351 you might try swapping heads. You can buy Aussie closed chamber heads on ebay for about $300. That will boost compression and, if the piston is not too far down the cylinder, improve knock resistance. Give the ports a mild port job.

If you take the EGR off (which I don't recommend) then you'll really want to recurve the distributor. This is extremely important. Without EGR your engine will want to knock at part throttle because they put in a lot of advance to compensate for the slower burn rate that EGR causes. Make sure you have a suitable ignition. Ford Duraspark or Pertronix II. Unfortunately, there are no iron four-barrel intakes for this engine. I suspect that you could get by with the two barrel carb, especially if you got it dyno-tuned.

 

I have a 351M as well and I put a crane cam with a 524 lift but i also changed the valve springs and timing chain, I have always been told to change the lifters and the timing chain when doing a cam swap

I am also running a eldebrock aluminum intake and holley carb (670) as well as a MSD ignition and billet distributor and it runs quite well.

 

 

>I have a stock 351M reman that has about 3,000 miles on it.
>It runs fine, but I'd like a little more pep. It is used
>for daily driving to work and occasionally (ie, once a year
>or so) towing about 5,000 lbs. The heads are stock so
>there's no need to put in a cam bigger than what the heads
>can flow because they will not be worked on. I would also
>like to put on a aluminum intake and 4-v carb and some
>headers.
>
>Stupid question, but do you always put in new lifters with a
>new cam? I only ask because the rebuild only has 3000
>miles.
>
>I'm looking for cam recommendations for cam and intake.
>I've heard comp HE 268 is good. I don't understand the
>performance differences between single plane and dual plane
>beyond the dual plane seems to be more desirable, and more
>expensive. However, since the heads are stock would dual
>plane be a wasted money over single plane. Edelbrock seems
>to be the only manufacturer I've seen selling intakes for
>351M.
>
>TIA
>Sam

O.K here goes.

If you have to pass smog checks, or want to keep the resale value high keep the smog equipment functional on your engine.
The Edelbrock performer with EGR is a very good choice for your engine. The Dual plane manifolds are exactly what you need. Edelbrock's cam,lifter, and timing chain set is a good piece for what you may want. It idles smoothly and will get just as good or better mileage than the stock cam, with a lot more power.

As for the lifters. When a cam and lifters are ran together they set up a wear pattern with each other. After they are run even for as little as twenty minutes, they become a pair. Each lifter needs to go back on the exact same spot on the cam or they will tear each other up.

The 268 comp cam is a little big unless you have headers and the 4bbl intake. It will not have very good power till about 3,000 rpm in a 351 engine. Then it will pull hard till about 4500. In a mostly stock engine it will be peaky and inefficient. So unless you want to do a lot of changes with the compression and exhaust I would stick to the 260 comp cam, the edelbrock cam, or something similar.

With the Edelbrock performer combination, headers and a good tune I would expect 250 horsepower and 330-350 lb/ft of torque. Along with good driveability and easy emissions passing.

 

Thanks for the info. Which Edelbrock cam are you refering to? I am not conversationally familiar with their products. Is the performer a specific type of cam, all you do is specify the engine?

Anybody have a header recommendation for 4x4 with C-6?

 

>Thanks for the info. Which Edelbrock cam are you refering
>to? I am not conversationally familiar with their products.
> Is the performer a specific type of cam, all you do is
>specify the engine?
>
>Anybody have a header recommendation for 4x4 with C-6?

Go to the edelbrock website or one of the larger speed shops like Summit. Edelbrock only make one cam for the 351M/400 It's very similar to the crane HMV 260.

The performer relates to a brand name type that they use for their different combinations. They are a matched type setup in that they are designed to work together to make power.

As far as headers. Go with 1 5/8 or 1 3/4 primaries. Summit or just about anyone can help you with them. Even JC Whitney has those headers.

Good luck and happy hunting.