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Who has had success with a roller cam big block?

Started by Kern Dog, September 09, 2024, 01:29:08 AM

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Kern Dog

The Pre Val is around ten bucks too. CHEAP and simple.

Kern Dog

Sometimes the prices of stuff sure jumps since the last time you bought it.
A 10 oz tube of "The Right Stuff" is forty bucks now? A Wix 51515 oil filter is fifteen?
I got two filters since I figure I should change the oil before and after the swap. Hydraulic lifters mean I set the preload and close it up. I tried to but Valvoline VR 1 in a 10 w 30 but couldn't find it at three stores I tried, only 20 w 50 and it is not advised to use oil that thick with these lifters. Amazon lists the 10 w 30 but won't ship it to California. I'll have to go to Summit Racing in Sparks Nevada.

Kern Dog

Finally I got off my ass and got to it. I don't know what the heck was holding me from it except.... me.
Here it is with the current setup, a Lunati solid flat tappet cam with .016 lash intake, .018 exhaust.

https://www.youtube.com/watch?v=EWqinx3e8eM

It runs strong and makes great power but isn't great for speeds much below 2000 rpms. It doesn't run bad, it just isn't that snappy from idle. Vacuum at idle is around 7-8" in neutral around 1000 rpms. I did a cranking compression test:

1) 172...2) 175
3) 175...4) 172
5) 178...6) 178
7) 180...7) 172

I was pleased to see the numbers so close. The plugs looked good.
There may be 3000-3500 miles on the plugs, much of it has been just putting around locally.
I tell you, spark plug access with 2" headers is not great. The battery is in the way, the brake booster makes for a crappy obstacle too. The left side...Numbers 2 and 4 have to be reached from underneath while laying on the floor. There was no misfiring going on so I'll clean and reuse these.