Re: Question on bushing the lifter bores
[Re: dakotahotrodder]
#3256037
09/05/24 07:13 PM
09/05/24 07:13 PM
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Joined: Aug 2005
Posts: 773
Southington Ct.
turbobitt
super stock
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super stock
Joined: Aug 2005
Posts: 773
Southington Ct.
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When bushing the lifter bores on a big block, is there a preferred (or standardized) location and diameter of oiling hole to add to the bushings? This is a race only deal with Indy heads so the upper end gets it's oil from the external lines. Thanks for the help! When I did mine, I used a chevy body style lifter in a Mopar .904 size. This resulted in a lifter that had an oil band that was easier to align with a metered hole size in the bushing. I took careful measurements to put the hole so it was always in the oil band during high and low lift. I did all this because I use Crower lifters with the HIPPO oiling option. I went a little large on the hole size at .0625" but I think .03125" would be plenty. IIRC - The regular BB mopar bodies lifters typically have some sort of edge oiling strategy that keeps the oil hole away from the large intersecting drilling that is bored from one end of the block to another. With a bushing in the bore it probably wouldn't get ant significant amount of oil. AG.
1970 Challenger w/572 Hemi street car and my pride and joy.
1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno.
1976 Cee Bee Avenger Jet Boat - 460 Ford powered.
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Re: Question on bushing the lifter bores
[Re: turbobitt]
#3256041
09/05/24 07:24 PM
09/05/24 07:24 PM
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Joined: Dec 2005
Posts: 12,278
Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 12,278
Fulton County, PA
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Hydraulic lifters? If not, no holes. Keep that oil on the crank.
If the results don't match the theory, change the theory.
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Re: Question on bushing the lifter bores
[Re: AndyF]
#3256052
09/05/24 08:29 PM
09/05/24 08:29 PM
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Joined: Jan 2003
Posts: 645
South Dakota
dakotahotrodder
OP
mopar
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OP
mopar
Joined: Jan 2003
Posts: 645
South Dakota
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Andy, I have Comp and BAM lifters in the 2 engines that I am planning on doing. I will see if the oil bands are in the same area, so hopefully the holes wouldn't be "lifter specific". Thanks for the reply!
Turbo, thanks for the reply. I had .050 in my head from somewhere, it's good info you have.
CMcAllister, solid roller, no hydraulic. I did not mention that in the post.
Last edited by dakotahotrodder; 09/05/24 08:32 PM.
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Re: Question on bushing the lifter bores
[Re: CMcAllister]
#3256056
09/05/24 08:43 PM
09/05/24 08:43 PM
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Joined: Mar 2006
Posts: 9,972
MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,972
MI, usa
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You will need a hole if you are going to oil thru the pushrod. Also depending on the lifter brand, The lifters oil feed hole to the axle may be lower than the bottom of the factory lifter bore. We extended my bushings down .100" below the factory cam bore to keep tha hole covered.
Doug
Last edited by dvw; 09/05/24 08:48 PM.
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Re: Question on bushing the lifter bores
[Re: dvw]
#3256139
09/06/24 10:38 AM
09/06/24 10:38 AM
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Joined: Jan 2003
Posts: 645
South Dakota
dakotahotrodder
OP
mopar
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OP
mopar
Joined: Jan 2003
Posts: 645
South Dakota
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Dvw, great info thanks!
63, I would be interested in seeing what this fixture is. I will pm you, thanks!
Last edited by dakotahotrodder; 09/06/24 10:46 AM.
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Re: Question on bushing the lifter bores
[Re: fbs63]
#3256142
09/06/24 11:01 AM
09/06/24 11:01 AM
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Joined: Dec 2003
Posts: 23,260
Here
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 23,260
Here
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I have a lifter shaped drill guide I made. I can ship it to you if you need to use it. Wasn't there a Mopar fixture offered at one time for this very task?
" All sorts of things can happen when you are open to new Ideas" Inventor of Kevlar
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Re: Question on bushing the lifter bores
[Re: turbobitt]
#3257091
09/10/24 11:49 PM
09/10/24 11:49 PM
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Joined: Mar 2008
Posts: 293
NY
challenger451ci
enthusiast
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enthusiast
Joined: Mar 2008
Posts: 293
NY
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When bushing the lifter bores on a big block, is there a preferred (or standardized) location and diameter of oiling hole to add to the bushings? This is a race only deal with Indy heads so the upper end gets it's oil from the external lines. Thanks for the help! When I did mine, I used a chevy body style lifter in a Mopar .904 size. This resulted in a lifter that had an oil band that was easier to align with a metered hole size in the bushing. I took careful measurements to put the hole so it was always in the oil band during high and low lift. I did all this because I use Crower lifters with the HIPPO oiling option. I went a little large on the hole size at .0625" but I think .03125" would be plenty. IIRC - The regular BB mopar bodies lifters typically have some sort of edge oiling strategy that keeps the oil hole away from the large intersecting drilling that is bored from one end of the block to another. With a bushing in the bore it probably wouldn't get ant significant amount of oil. AG. I added a groove in the outside of the bushings to get oil flow to the ports in the Crower HIPPO lifters.My Indy block is setup for pushrod oiling and is fed from the center of the valley, so I had to make sure each feed port intersected with the lifter band. 
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Re: Question on bushing the lifter bores
[Re: CMcAllister]
#3257183
09/11/24 01:05 PM
09/11/24 01:05 PM
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Joined: Dec 2021
Posts: 1,305
Loudoun County, VA
Brad_Haak
pro stock
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pro stock
Joined: Dec 2021
Posts: 1,305
Loudoun County, VA
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Hydraulic lifters? If not, no holes. Keep that oil on the crank. What about solid rollers with pressure-fed roller bearings / bushings? They don't "work" with spash-only oiling AFAIK.
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: Question on bushing the lifter bores
[Re: jcc]
#3257185
09/11/24 01:08 PM
09/11/24 01:08 PM
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Joined: Dec 2021
Posts: 1,305
Loudoun County, VA
Brad_Haak
pro stock
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pro stock
Joined: Dec 2021
Posts: 1,305
Loudoun County, VA
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I have a lifter shaped drill guide I made. I can ship it to you if you need to use it. Wasn't there a Mopar fixture offered at one time for this very task? I don't recall a manufactured fixture from anyone. The one I used in the past was lent to me by the late Dan Costello (RIP) at Performance Only Racing and it appeared to be a tool he made himself.
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: Question on bushing the lifter bores
[Re: Brad_Haak]
#3257206
09/11/24 02:42 PM
09/11/24 02:42 PM
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Joined: Jan 2003
Posts: 2,783
541 slobovia
A990
master
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master
Joined: Jan 2003
Posts: 2,783
541 slobovia
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I have a lifter shaped drill guide I made. I can ship it to you if you need to use it. Wasn't there a Mopar fixture offered at one time for this very task? I don't recall a manufactured fixture from anyone. The one I used in the past was lent to me by the late Dan Costello (RIP) at Performance Only Racing and it appeared to be a tool he made himself. Give these guys a try https://wydendorfmachine.com/reamerkits.html
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