Roller Cam Thrust Button - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Captainfab** · 09-21-2009, 01:36 AM

We're running the NX288HR. I'm thinking it should run pretty good.

Rodms · 09-21-2009, 03:14 PM

OK 2 buttons listed in book,under those years,1 is .642 in and I think thats the diameter,length measures about 9/16 of a inch,the other is .925 round and length is the same I think.The .642 is the one I used with the cloyes timing chain,and the washers are about 1/8.Ok comps book says your button is.795 in length,is that with or without the washer?Mine is max maybe 11/16 all together.

KQQL IT · 09-21-2009, 09:35 PM

Quote:

Originally Posted by Captainfab

We're running the NX288HR. I'm thinking it should run pretty good.

My cam is xr288hr 12-433-8 in a 9.5:1 406 dart 200cc edelbrock air gap RPM hp950 holley so far its been 12.20s@4020lbs

**Captainfab** · 09-21-2009, 11:35 PM

Quote:

Originally Posted by Rodms

OK 2 buttons listed in book,under those years,1 is .642 in and I think thats the diameter,length measures about 9/16 of a inch,the other is .925 round and length is the same I think.The .642 is the one I used with the cloyes timing chain,and the washers are about 1/8.Ok comps book says your button is.795 in length,is that with or without the washer?Mine is max maybe 11/16 all together.

Thanks for having your wife look that up Rod. My son decided to go ahead and order the .642 one today and give that a try. As I understand it that is the length. I would think the diameter would be the same for all SBC's? Could you elaborate on the 'washer'. Does it go between the button and the cam, or against the timing cover?

Quote:

Originally Posted by KQQL IT

My cam is xr288hr 12-433-8 in a 9.5:1 406 dart 200cc edelbrock air gap RPM hp950 holley so far its been 12.20s@4020lbs

That sounds like a good combo. Is that on just fuel, or with a little juice? either way that's a respectable time for a truck.

I really want to build a 406 some day......been wanting to for about 25 years

For now I can get my fix helping my son with his

KQQL IT · 09-21-2009, 11:45 PM

Nope all motor drove it to the track 45 miles one way that combo is two years old with 100plus runs and a ton street time

Rodms · 09-23-2009, 01:29 PM

The washer goes on the cover,the button runs against washer OK.

**Captainfab** · 09-23-2009, 11:01 PM

That's what I thought, but I just wanted to make sure. Thanks.

Rodms · 09-24-2009, 12:52 AM

don't burn a hole in it,where the x cross on the stock cover thats where it goes,if it starts walking thats what a hammer is for.You should'nt have a problem.You do want the washer tight against the button if you tap it with whatever should not sound hollow!

09-21-2009, 01:36 AM	#1
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,254	Re: Roller Cam Thrust Button We're running the NX288HR. I'm thinking it should run pretty good. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

09-21-2009, 03:14 PM	#2
Rodms Registered User Join Date: Jul 2008 Location: Olive Branch,Mississippi Posts: 347	Re: Roller Cam Thrust Button OK 2 buttons listed in book,under those years,1 is .642 in and I think thats the diameter,length measures about 9/16 of a inch,the other is .925 round and length is the same I think.The .642 is the one I used with the cloyes timing chain,and the washers are about 1/8.Ok comps book says your button is.795 in length,is that with or without the washer?Mine is max maybe 11/16 all together. __________________ Built chevy tuff! Last edited by Rodms; 09-21-2009 at 03:28 PM. Reason: add

09-21-2009, 11:45 PM	#5
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,322	Re: Roller Cam Thrust Button Nope all motor drove it to the track 45 miles one way that combo is two years old with 100plus runs and a ton street time

09-23-2009, 01:29 PM	#6
Rodms Registered User Join Date: Jul 2008 Location: Olive Branch,Mississippi Posts: 347	Re: Roller Cam Thrust Button The washer goes on the cover,the button runs against washer OK. __________________ Built chevy tuff!

09-23-2009, 11:01 PM	#7
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,254	Re: Roller Cam Thrust Button That's what I thought, but I just wanted to make sure. Thanks. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

09-24-2009, 12:52 AM	#8
Rodms Registered User Join Date: Jul 2008 Location: Olive Branch,Mississippi Posts: 347	Re: Roller Cam Thrust Button don't burn a hole in it,where the x cross on the stock cover thats where it goes,if it starts walking thats what a hammer is for.You should'nt have a problem.You do want the washer tight against the button if you tap it with whatever should not sound hollow! __________________ Built chevy tuff!



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