2013 indy ''backyardigan''

Larry Hill · 09-20-2013, 08:09 AM

YES! The cam is here. A quick incoming Q.C. shows the base circle is .020 larger. Lobe lift is +/- .001 of the old cam, it might be ok checked at the valve. We install #1 and #2 piston and rods to check tdc. and degree cam. After degree wheel is removed I install timing cover and damper to see if I cam duplicate the numbers from the degree wheel, just in case I want to change cam centerline at the track.

Now is "proof of the pudding" time, does it check at the valve. Most valve lift is good I have five that check too big the worst one is out by +.003". I have two different sets of pushrods and an adjustable push rod to help solve the problem of too much lift. Chris at Comp Cams to the rescue the next day I have a new set of pushrods that I think I need.

Now its time to play Rubik's pushrods and rockers to get the engine to check, just in case we are chosen for the barn at Indy.

09-20-2013, 08:09 AM	#14
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,677 Likes: 1,992 Liked 10,968 Times in 2,261 Posts	Re: 2013 indy ''backyardigan'' YES! The cam is here. A quick incoming Q.C. shows the base circle is .020 larger. Lobe lift is +/- .001 of the old cam, it might be ok checked at the valve. We install #1 and #2 piston and rods to check tdc. and degree cam. After degree wheel is removed I install timing cover and damper to see if I cam duplicate the numbers from the degree wheel, just in case I want to change cam centerline at the track. Now is "proof of the pudding" time, does it check at the valve. Most valve lift is good I have five that check too big the worst one is out by +.003". I have two different sets of pushrods and an adjustable push rod to help solve the problem of too much lift. Chris at Comp Cams to the rescue the next day I have a new set of pushrods that I think I need. Now its time to play Rubik's pushrods and rockers to get the engine to check, just in case we are chosen for the barn at Indy. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817