Retrofit roller lifters? (Oops...)
#177367
12/28/08 08:18 PM
12/28/08 08:18 PM
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Joined: Jan 2006
Posts: 234
SW FL
dodgedartgt
OP
enthusiast
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OP
enthusiast
Joined: Jan 2006
Posts: 234
SW FL
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When I originally posted, I typed roller rockers... What I meant and would like to learn about is roller lifters, SO...
Can someone tell me about retro fitting roller lifters into a '76 vintage LA block? Brands, prices, modifications necessary, anything else you can think of.
TIA, Mike
Last edited by dodgedartgt; 12/29/08 03:35 PM.
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Re: Retrofit roller rockers?
[Re: MoparforLife]
#177371
12/29/08 04:45 PM
12/29/08 04:45 PM
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Joined: Nov 2003
Posts: 3,577
Long Island, NY USA
BergmanAutoCraft
master
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master
Joined: Nov 2003
Posts: 3,577
Long Island, NY USA
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Quote:
WHy do you want roller rockers??? They will give you no HP advantage over a set of dictile iron. The only advantage that they will have over the stamped OEM rockers is truer ratio. Here by Dulcich.
Some of us like reving our engines over 5K, and besides, lightening the valvetrain is ALWAYS a good idea.
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Re: Retrofit roller rockers?
[Re: BergmanAutoCraft]
#177372
12/29/08 07:10 PM
12/29/08 07:10 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Quote:
WHy do you want roller rockers??? They will give you no HP advantage over a set of dictile iron. The only advantage that they will have over the stamped OEM rockers is truer ratio. Here by Dulcich.
Some of us like reving our engines over 5K, and besides, lightening the valvetrain is ALWAYS a good idea.
Rollers ain't the answer for that.  Better places to spend the money than that if that is the reason you are looking at. I don't like picking little needles out of the engine either.
Quote:
I made a typo when I posted this originally... What I meant was retrofit roller lifters... sorry and thanx.
Roller cam is a completely different story.
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Re: Retrofit roller rockers?
[Re: MoparforLife]
#177373
12/29/08 08:17 PM
12/29/08 08:17 PM
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Joined: Jan 2007
Posts: 693
Coronado, CA
go-fish
mopar
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mopar
Joined: Jan 2007
Posts: 693
Coronado, CA
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Not roller cam. You're thinking about roller cam bearings.
To retrofit for roller lifters you need to bush the lifter bores. The sleeves will still end up being .904. You will need to find a shop with a special cam tunnel fixture for LA. They need to use this fixture to bush the bores, it needs to be LA specific.
The closest shop I found was 100 + miles away. I was debating sending the block to Hughes before I found them.
70 'cuda: ProCharged 408, Tremec 5 speed, S60,triangulated 4 link, Hydroboost and Wilwoods
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Re: Retrofit roller rockers?
[Re: go-fish]
#177374
12/29/08 08:46 PM
12/29/08 08:46 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Not roller cam. You're thinking about roller cam bearings.
Wrong answer! Been in this game long enough to know that a hydraulic roller cam is the terminology used to describe a camshaft ground to use a hydraulic roller lifters.
Not referring to a camshaft using roller cam bearings
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Re: Retrofit roller rockers?
[Re: dezduster]
#177379
12/30/08 12:34 PM
12/30/08 12:34 PM
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Joined: Jan 2003
Posts: 13,596
md
mopars4ever
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,596
md
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Quote:
I did have to have a custom smaller base roller cam made up so the lifter oil grooves would not be exposed at max lift.
Is this a problem on all early pre roller blocks?
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Re: Retrofit roller rockers?
[Re: mopars4ever]
#177381
12/30/08 06:09 PM
12/30/08 06:09 PM
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Joined: Aug 2004
Posts: 3,333
MARYLAND
69Cuda340S
master
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master
Joined: Aug 2004
Posts: 3,333
MARYLAND
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Quote:
Quote:
I did have to have a custom smaller base roller cam made up so the lifter oil grooves would not be exposed at max lift.
Is this a problem on all early pre roller blocks?
Depends on the block and how high a lift the cam has. On my '71 340 block the top of the lifer bores had a chamfer machined into them and that caused the oil groove to be exposed. But the machining was not consistent. Some sealed really well and others did not. Brian at IMM (user ou812) had a cam ground for me that solved the problem. Was about the same price as an off the shelf retrofit roller cam.
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Re: Retrofit roller lifters?
[Re: dodgedartgt]
#177382
12/31/08 12:16 AM
12/31/08 12:16 AM
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Joined: Jan 2003
Posts: 2,511
Tampa , Fl
MoparJoe
super gas
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super gas
Joined: Jan 2003
Posts: 2,511
Tampa , Fl
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Quote:
Waht year did the 318/5.2 & 360/5.9 become roller lifter blocks?
Also... BUMP!
Thanks, Mike
They started showing up ready for a roller in late '84 even though many still used flat tappets until '87-88.
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Re: Retrofit roller lifters?
[Re: mike_vango]
#177385
01/01/09 05:24 PM
01/01/09 05:24 PM
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Joined: Aug 2004
Posts: 3,333
MARYLAND
69Cuda340S
master
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master
Joined: Aug 2004
Posts: 3,333
MARYLAND
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Quote:
Quote:
For the cost and trouble of converting to a roller cam, you would be nuts if you didn't just find a later stock roller cam block.
i agree!!
A lot cheaper that way too.
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