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Roller Rockers?
Posted: Thu Feb 02, 2023 1:12 pm
by OldFarmTruck22
The 78 360 has 1.6 ratio rockers, right?
If I wanted to get rid of the bridges and stock rockers, what roller rockers would you guys suggest? I was looking at the Proform #67480
Are there any stud changes that need to be made to go with roller rockers or can I leave the factory studs in there?
Any benefit to going with the 1.7 ratio?
Thanks
Re: Roller Rockers?
Posted: Thu Feb 02, 2023 7:27 pm
by weeegoneeer
I tried the comp rollers for about 100 miles but was in a state of overbuilding and went for these:
https://harlandsharp.com/collections/st ... 8-3-8-stud
1.6:1 is correct. Personally I don't think it's worth going to 1.7. Might need new valve covers / etc. Are you running a race engine?
A few things about rollers:
- There really is a lot less friction on the engine. With plugs out and a ratchet on the crank you can feel it.
- They are louder. Be prepared for this. Less loud with the stock iron valve covers.
- You will need to get your heads drilled for studs.
- It took me a bit to get my valvetrain geometry correct.
I have a set of comp magnum rollers with 100 miles on them I could sell you for wicked cheap if you want. But unless you're in a full rebuild I don't think it's worth it.
Re: Roller Rockers?
Posted: Sat Feb 04, 2023 1:00 am
by dodgerammit
weeegoneeer wrote: ↑Thu Feb 02, 2023 7:27 pm
I tried the comp rollers for about 100 miles but was in a state of overbuilding and went for these:
https://harlandsharp.com/collections/st ... 8-3-8-stud
1.6:1 is correct. Personally I don't think it's worth going to 1.7. Might need new valve covers / etc. Are you running a race engine?
A few things about rollers:
- There really is a lot less friction on the engine. With plugs out and a ratchet on the crank you can feel it.
- They are louder. Be prepared for this. Less loud with the stock iron valve covers.
- You will need to get your heads drilled for studs.
- It took me a bit to get my valvetrain geometry correct.
I have a set of comp magnum rollers with 100 miles on them I could sell you for wicked cheap if you want. But unless you're in a full rebuild I don't think it's worth it.
After I had the 360 rebuilt, I noticed how noisy the Scorpion rollers were. I agree. Not worth it, IMO. Definitely not satisfied for what was spent doing the conversion to roller rockers. Unless you specifically NEED them, your $$$ is better spent elsewhere.
FWIW, even LS motors don't have roller rockers. The rockers have a trunnion bearing, but the tip is just a contact point with no roller. They do have roller lifters where more friction is happening as the cam rotates and the lifter is following.