427 SBF

89 Fox 427 said:
Alignment is wrong. Stacked tolerances are fun. Dowel fits into the gear. Gear fits over the cam.

center of dowel to center of cam is off
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Hopefully they'll send you another and pay return shipping. Looking forward to installing mine 🤦‍♂️
Deburring and opening up a bolt hole is one thing. Dowel hole off by that much is just sad 🥵.
It appears that your bearing is part of the sprocket. I believe patriot is saying there's one available where the plate is the bearing. Not sure which would be better in your case.
 
BOSS#1540 said:
Hopefully they'll send you another and pay return shipping. Looking forward to installing mine 🤦‍♂️
Deburring and opening up a bolt hole is one thing. Dowel hole off by that much is just sad 🥵.
It appears that your bearing is part of the sprocket. I believe patriot is saying there's one available where the plate is the bearing. Not sure which would be better in your case.
Click to expand...

This has double bearing. The plate has a bearing and so does the gear.

Ballin
 
The end of the dowl looks like it has been filed down at an angle.
 
KwiknFast said:
The end of the dowl looks like it has been filed down at an angle.
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Go back about 10 pages in between the bickering you'll see I had to finger fuck it myself because I'm a dumb ass
 
Summit is shipping another one but I won't get it until Wednesday.

This shit is exhausting.

Reminder, buy a finished, dyno proven engine on your builds. This is fuckin absurd
 
I used the cam bolt to push it on like a balancer install tool. Didn't take much effort. Except the same problem exists.

Zero cam endplay. Except this time the cam doesn't spin at all and it wasn't even torqued down

Either the block is machined wrong

The cam is machined wrong

The timing set is the wrong set

What else could it be?
 
I took it apart.

I ate lunch.

I came back.

I checked deck clearance for fun. When you rock the piston, one side will actually come out of the hole 0.004". Rock it the other way and its 0.013" in the hole.

.017" total movement, divide by 2, and you get 0.0085" in the hole. About 10.45:1 compression based on that.

I installed cam gear and checked again. Magically I have 0.004 camshaft end play. God help me.
 
Dot to dot. 0.020 past max lift 136 degrees. 0.020 before max lift 86 degrees. Add and divide by 2

Intake centerline installed at 111 degrees
 
Don't celebrate yet. The chain is rubbing the block.

@drag-200stang I checked all the measurements I could think of between my two cams.

Ordering part number cs10030 as I think this one is incorrect for my block anyway
 
89 Fox 427 said:
Don't celebrate yet. The chain is rubbing the block.

@drag-200stang I checked all the measurements I could think of between my two cams.

Ordering part number cs10030 as I think this one is incorrect for my block anyway
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Lol. I was just looking at my directions and getting ready to see if mine fits and noticed it says to check for block/oil galley boss interference. Came on here to ask you about it and ....
 
Just checked mine, it fits nice and snug, feels like a 0 interference fit though, lots of finesse and wiggling.
Cam is NOT in the block, no idea on block interference
 
BOSS#1540 said:
Just checked mine, it fits nice and snug, feels like a 0 interference fit though, lots of finesse and wiggling.
Cam is NOT in the block, no idea on block interference
Click to expand...

It is my understanding that the balancer will push the crank sprocket all the way back. My cloyes timing set has a gear thickness of .880 and the chain had block clearance, but no camshaft endplay. The 10025 rollmaster set is .835 thick, causing the sprockets to be out of alignment and rubbing the block when pushed all the way in.

I'm learning.

I'm hating.
 
89 Fox 427 said:
It is my understanding that the balancer will push the crank sprocket all the way back. My cloyes timing set has a gear thickness of .880 and the chain had block clearance, but no camshaft endplay. The 10025 rollmaster set is .835 thick, causing the sprockets to be out of alignment and rubbing the block when pushed all the way in.

I'm learning.

I'm hating.
Click to expand...
Does patriot have the same block as you?
 
BOSS#1540 said:
Does patriot have the same block as you?
Click to expand...
No.

I think the older version he has was called the sportsman and now they are shp

Not sure what the differences are, but the dart blocks have a thicker bulkhead than oem causing the chain issue
 
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