427 SBF

Can you pull the cam forward and measure with a depth mic. or the end of calipers the thickness of the retainer and then measure the cam sprocket. The marks seem normal, but not if tight. And it sounds like the cam has room to go back and the rear cam plug is not your problem.
PS, I know nothing about V engines.
 
drag-200stang said:
Can you pull the cam forward and measure with a depth mic. or the end of calipers the thickness of the retainer and then measure the cam sprocket. The marks seem normal, but not if tight. And it sounds like the cam has room to go back and the rear cam plug is not your problem.
PS, I know nothing about V engines.
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Both measurements are identical with these cheap ass calipers.

0.254"

But the retainer plate measures .247

That should mean I have clearance..
 
I took everything apart, cleaned it. Retorqued. Still zero endplay.

We'll see what the new timing set will do. Also bought a pickup tube so I can get the bottom side buttoned up
 
89 Fox 427 said:
Bought this. Fuck it. 2nd day air I'll have it Friday

www.summitracing.com

Rollmaster Performance Products NA-CS10025 Rollmaster Gold Series Timing Sets | Summit Racing

Free Shipping - Rollmaster Gold Series Timing Sets with qualifying orders of $109. Shop Timing Chain and Gear Sets at Summit Racing.
www.summitracing.com www.summitracing.com
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I would call Rollmaster and make sure that's the model you need.
From their site:

* Ford Windsor HO , SVO and Ford Racing Blocks. Fits: Dart Aftermarket Blocks also has thicker crank sprocket
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The CS10025 doesn't have the asterisk.
It's not perfectly clear what that means.

Loading…

www.romacusa.com
 
I tried to measure runout on the face of the cam and came up with .002"

The face of the sprocket was .003"

No idea what's normal or not here.
 
Steve439 said:
I would call Rollmaster and make sure that's the model you need.
From their site:



The CS10025 doesn't have the asterisk.
It's not perfectly clear what that means.

Loading…

www.romacusa.com
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I called dart and they didn't have an answer. The 10030 wasn't in stock. Wouldn't have it for over a week
 
89 Fox 427 said:
Luckily I did not lock tite!

@Steve439 yes of course, however this cam has enough room to damn near be pushed out of the journals if you keep pushing rearward.

I've discovered the cam gear is rubbing the retainer plate ever so slightly. Made some marks on the retainer, torqued the sprocket, spun it by hand, and there's about 90 degrees where it feels much tighter. Found this


View attachment 29270
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Plate is warped. Hard flat surface, crocus cloth, elbow grease.
 
What is the difference between EFI and pre-EFI blocks?
Something to do with no fuel pump provision with EFI?
 
I have had good luck with Rollmaster stuff on my SBC's.

Now you are saying there is no end play with the cam installed with the retainer plate? What stop the cam from moving backwards in the block except for the distributor and rear galley plug?

I am NO engine builder and I have never taken a Ford engine apart that far. Have only done heads/intake/headers, never changed a cam.
 
BOSS#1540 said:
I was wondering that, thought I saw both types for windsor. My torrington (for 351c 🤮) uses the factory plate but comes with tapered flush mount bolts.
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I was thinking that also, but in rereading it, sounds like things are out of whack, maybe face of block, cam face, sprocket faces, retainer plate. Maybe, they stack up the wrong way.
 
89 Fox 427 said:
I called dart and they didn't have an answer. The 10030 wasn't in stock. Wouldn't have it for over a week
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Dam, you move fast, lol. Was the one you had nice and snug, no slop in chain? This would've been the time to get a tighter one if needed.
I sure hope your issues aren't block machining related 🤞
 
BOSS#1540 said:
Dam, you move fast, lol. Was the one you had nice and snug, no slop in chain? This would've been the time to get a tighter one if needed.
I sure hope your issues aren't block machining related 🤞
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3/8" chain deflection when one side is tight. Overhaul manual says 1/2" is maximum.

The only machining issue I could think of would be the spot for the retainer isn't machined perpendicular to line bore of the cam?
 
89 Fox 427 said:
3/8" chain deflection when one side is tight. Overhaul manual says 1/2" is maximum.

The only machining issue I could think of would be the spot for the retainer isn't machined perpendicular to line bore of the cam?
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Ya, I hope that isn't it. If so you could try to have the plate tapered to match. Which may not be possible with the encased torrington, idk. If the cam was bent it should scrub all the way around. Did you check the plate flatness like baddaddy suggested? Even if you're not using the plate it may help you sleep knowing.
 
BOSS#1540 said:
Ya, I hope that isn't it. If so you could try to have the plate tapered to match. Which may not be possible with the encased torrington, idk. If the cam was bent it should scrub all the way around. Did you check the plate flatness like baddaddy suggested? Even if you're not using the plate it may help you sleep knowing.
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I set the plate on a granite counter and it had no movement. Not really sure if there's another way to test that
 
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