Question--Roller Lifters
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Team Owner
Joined: Aug 2005
Posts: 34,988
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From: Riverside County Southern California
Co-winner 2020 C4 of the Year - Modified
2018 Corvette of Year Finalist
2017 C4 of Year
2016 C7 of Year Finalist
St. Jude Donor '09 thru '20
Question--Roller Lifters
On the roller lifters in my LT4, there is a pin hole on one side of them. There were facing front and rear and before I re-install them,
Which way the pin hole should face?
Rear, front or the same way they came out?
Which way the pin hole should face?
Rear, front or the same way they came out?
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
It really does not matter as long as you have oil pressure, but...
If possible I always face oil supply hole on roller lifters to the rear of the block, as oil comes up to the cam/lifters via the main oil galley (which is in the rear of the block), intersects the cam and lifter galleys and then once in the lifter galleys travels from rear to front in a SBC.
Installed this way you put the lifters oil supply hole in the direct path of oil pressure.
Will
If possible I always face oil supply hole on roller lifters to the rear of the block, as oil comes up to the cam/lifters via the main oil galley (which is in the rear of the block), intersects the cam and lifter galleys and then once in the lifter galleys travels from rear to front in a SBC.
Installed this way you put the lifters oil supply hole in the direct path of oil pressure.
Will
Thread Starter
Team Owner
Joined: Aug 2005
Posts: 34,988
Likes: 515
From: Riverside County Southern California
Co-winner 2020 C4 of the Year - Modified
2018 Corvette of Year Finalist
2017 C4 of Year
2016 C7 of Year Finalist
St. Jude Donor '09 thru '20
It really does not matter as long as you have oil pressure, but...
If possible I always face oil supply hole on roller lifters to the rear of the block, as oil comes up to the cam/lifters via the main oil galley (which is in the rear of the block), intersects the cam and lifter galleys and then once in the lifter galleys travels from rear to front in a SBC.
Installed this way you put the lifters oil supply hole in the direct path of oil pressure.
Will
If possible I always face oil supply hole on roller lifters to the rear of the block, as oil comes up to the cam/lifters via the main oil galley (which is in the rear of the block), intersects the cam and lifter galleys and then once in the lifter galleys travels from rear to front in a SBC.
Installed this way you put the lifters oil supply hole in the direct path of oil pressure.
Will
