stock cam specs

[thinman56]

okay, i looked through the first few pages of the post, and did some general internet research for the answer to this question, but the red sox are almost on, so would someone please humor me with the stock 66 200 cam specs (duration, separation, lift)? like to know how all these performance cams compare to the stock and the stock with 1.6 rockers.

thanks,
scott

 

[addo]

the red sox are almost on

Who?

stock 66 200 cam specs (duration, separation, lift)?

Too little, average, not enough.

I dialled 221 intake, 229 exhaust lift on an original Oz cam a couple of years ago. You'll note that the factory timing of the cam varies with degrees of emission control impediment.

 

[Anonymous]

at the lobes...

 

[addo]

My measurements were off the lobes. Off the top of the pushrod, actually.

 

[xctasy]

The Ford power train engineers used a stock 252 degree cam on everything from the 144-250's, and even on the first Windsor V8 221's. Cleveland 2V's got the same duration thing too, give or take a degree. Actually it was 256 IIRC. Sixes ran from 252 degrees to 256 in the later cam. Lift goes from .348" to .368" at the valve.

Thats at lash, not including the ramps. Chevy add the two 10 degree ramps, and end up with wilder cams than Fords, but Ford measure it to the SAE method.

The 50 thou figures are very mild, under 185 degrees. These are quite, ultra reliable cams for a long life power plant. You can go up to 270 degrees at lash, and 205 degrees at 50 thouwithout adding much stress to things. Lobe centres are about 110 degrees, and lift is 0.229 *1.6, minus a loss in lash. Thats about 360 thou lift at the valve. Ford Pintos ran more lift and duration than Falcon sixes did!

All stock Fords are mildly cammed. The Falcon engine was made in the Ontario plant, and used the same cam profile as the base model V8's.

So if anyone asked you waht the cam is, tell them Two Five Two, and you'll be right.

Now, second question for 10 points, where's the old post by Slade or MustangGeezer that had the cam figures.

 

[Anonymous]

Now, second question for 10 points, where's the old post by Slade or MustangGeezer that had the cam figures.

This was a question I asked awhile back...still would like to know.



-Chris

 

[CobraSix]

tisk tisk...we always forget about the excellent work Jack has already done for us (as much as I'd like to take his credit)

http://fordsix.com/camtech.htm

Crane Cams
256D: 256/264 - 194/202 - .398/.413 - 110* - 1000-4000
206D: 268/276 - 206/214 - .420/.435 - 112* - 1500-4500
276D: 276/284 - 214/222 - .435/.450 - 112* - 2000-5000
290D: 290/300 - 228/238 - .460/.480 - 112* - 2500-6000 (min 9.5 CR)
Clifford Perf.
264: 264/264 - 209/209 - .474 - 110* - (rpm not listed)
272: 272/272 - 214/214 - .478 - 110* - (rpm not listed)
Comp Cams
252: 252/252 - 206/206 - .425 - 110* - 500-4500
260: 260/260 - 212/212 - .440 - 110* - 1000-5000
Crow Cams
254D: 254/264 - 194/202 - .382/.408 - (not listed) - 1000-3800
270S: 270/270 - 208/208 - .420/.420 - (not listed) - 1400-4200
270D: 270/280 - 204/214 - .420/.442 - (not listed) - 1500-4500
280S: 280/280 - 214/214 - .442/.442 - (not listed) - 1800-4800
282S: 282/282 - 222/222 - .448/.448 - (not listed) - 2100-5500
Isky Cams
248: 248/248 - 194/194 - .415 - 109* - 1000-3800
256: 256/256 - 202/202 - .450 - 112* - 1500-4800
262: 262/262 - 208/208 - .445 - 109* - 2000-5000
280: 280/280 - 224/224 - .465 - 112* - 2500-6500 (min 9.5 CR)


Or do you mean the stock cam?

Slade

 

[thinman56]

yes, the stock cam for reference. and just so i'm clear, all these lifts are at the valve with 1.5 rocker? or at the lobe?

thanks...

 

[Anonymous]

so would someone please humor me with the stock 66 200 cam specs

Yes Slade, stock. :roll:



-Chris

 

[xctasy]

http://fordsix.com/forum/viewtopic.php?p=104885&highlight=#104885

If you check stang 200's old posts, he has had a great look at the Engine Analyser too.

The cam duration was only about 190 degrees at 50 thou, and it had only a 1.5:1 rocker ratio stock.

The rear wheel hp is about 67 net with an early 200, which is about 87 to 90 hp net at the flywheel.

80 Stang has dyno runs indicating about 114 flywheel hp net with a near stock engine.

We'll get some graphs lined up, and a suite of acceleration curves and hp curves for each modificatiion drawn up. There is heaps of info here. Don't be afraid to cam the engine up, and scout around for a losser torque converter if you go over 270 degrees.

 

[Anonymous]

Speaking of EA 3.0, does anyone still have this version of the program? I lost a hard drive and my mirror apparently never created a proper MBR. The only version that I can find is newer and it only specs out a 5.0L. If you want greater functionality you must buy. So much for a good free be.



-Chris

 

[thinman56]

thanks to all who replied. i finally got the ford six performance handbook, and whadya know it says right there the 66 200 used a 252/256 duration with .370 lift. comparing this to all those performance cams, looks like a little durtion goes a long way for horsepower, but you need to really boost the lift to get compensating torque. i know this is covered in great detail in other pages, so no need to beat it up. thanks again.

 

[Anonymous]

Hehehe, isn't the hand book awesome? Heheh, when i get bored of somethingi just pull out the hand book and start readin' ....