8psi+snappy 1-2 = broke output shaft

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Jan 24, 2010 | 10:17 PM

#21

joeyc125

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From: Cedar, MN

Quote:

Originally Posted by L82gofast

update. Some info you guys might want to know...

When I pulled the 1900 off I found that the bottom part of each port on the spacers that go between the heads and the blower were blown out.

All eight of them. Not sure how fast this thing revved to but I did have my foot in it and the output shaft let go right at the shift about 6000rpms, so far more than that in a instant for sure.

Wonder how much boost it hit to cause the plastic spacers to burst

Cam, springs, pistons, lifter bore's all look good. Put in LS7 lifters and got the heads back on. Gotta wait and call magnacharger for a new set of spacers on Monday.

Are you talking about the intake gaskets? Can't picture any other "spacers" from when I put mine together?

Jan 27, 2010 | 10:26 PM

#22

zippy

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From: Las Vegas, NV

The NNBS engines have a different valley cover which makes them use the spacers. The valley cover is because of the D.O.D. system.

Jan 28, 2010 | 05:10 AM

#23

L82gofast

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From: Oatmeal, TX

Quote:

Originally Posted by zippy

The NNBS engines have a different valley cover which makes them use the spacers. The valley cover is because of the D.O.D. system.

Yep. Thats why. I am installing LS7 lifters and getting a LS2 valley cover to remove the DOD stuff. It may fit without the spacers...

Jan 28, 2010 | 09:24 AM

#24

joeyc125

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From: Cedar, MN

Ahh, I see. Was wondering if I missed something when I put mine on!

Jan 30, 2010 | 06:04 PM

#25

zippy

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Quote:

Originally Posted by L82gofast

Yep. Thats why. I am installing LS7 lifters and getting a LS2 valley cover to remove the DOD stuff. It may fit without the spacers...

Correct, shouldn't be a problem then. You'll just want to use the LS2 Magnacharger billet cover. The D.O.D. swap should go smooth and if you plan to rev it much past 6k it's a good idea.

Jan 30, 2010 | 06:11 PM

#26

L82gofast

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From: Oatmeal, TX

Thanks Zippy.

I already had the spacers coming and decided to use them as it looked like the LS2 cover and bolts would still be too high. You are right, the billet cover with the pan head bolts would be the way to go.

Back together. Has all 4 gears and all 8 cylinders. Pulled on a hemi magnum on the shakedown run today