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Thu Sep 24, 2020 12:12 pm

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Can anyone ID this cam? 4063 on one side of the notch and a "P" on the other,
K2 and C1 on the shaft. Somebody, at some time, scratched "7K" on the gear.
Thanks in advance. I used the block but didn't use this cam in my DD build.

Thu Sep 24, 2020 12:24 pm

Bugpack 4063

Brian

Thu Sep 24, 2020 12:37 pm

Thanks Brian. From that description I'm adding what little I know about cams and now I'm glad I've got a 110 in my 1835. That's a lot of lift and duration for a daily driver isn't it?

Thu Sep 24, 2020 12:42 pm

It all depends on the rest of your engine combo. If you have stock valves and low compression, than it might be too much. Nice heads, IDF's, and 9.0+ and the 4036 might be better than the w110.

The 4036 is somewhat similar to a w120. The duration on the card is advertised, and the lift is at the valve with a 1.1:1 rocker.

Brian

Thu Sep 24, 2020 12:50 pm

Yeah, I've got 40x35 valves w/ stock ports and only about 8-1 compression. I've got the 44s. Maybe one day I'll stroke it and port the valves and buy an 5 row oil cooler. But we all want bigger don't we!

Thu Sep 24, 2020 1:41 pm

Bugpack cams have reasonably mild ramps and are reasonably mild in general, so they do not quite yield the same power as an Engle or Eagle equivallent. I have built some engines around the 4063 cam and the verdict is that they generally make the engine very driveable, but as menthioned do not peak quite as high as the numbers suggest. And yes, it wants/needs some CR to work well. At least 9-1.
In say a 2110 that cam with 1,25 rockers works very well, In an 1835 I would not use 1,25´s unless I was after rpm power.

Thu Sep 24, 2020 4:47 pm

too bad the edges were not deburred before it was run. I have one of those on the shelf.

Thu Sep 24, 2020 5:17 pm

mark tucker wrote: too bad the edges were not deburred before it was run. I have one of those on the shelf.

What problems might this cause?

Thu Sep 24, 2020 5:49 pm

I think he is referring to the debris it shead. See the photo how rough the edges got.

Fri Sep 25, 2020 3:11 am

All those tiny steel particles were not helpful in the previous build obviously. This cam was in a late fuel injected case I got from a Craigslist add. When I pulled the heads off I found what appeared to be tiny indentures on top of #3 piston resembling a valve keeper. Lifter bores seem somehow unmarked. P.O. said he ran this motor only long enough to know it didn't make the power he wanted so he bought a new case and built a stroker. He also said his builder was an old school genious!
I took his parts out and put in mine and my only problems are with keeping idle jets clean.

Fri Sep 25, 2020 3:20 am

Would this cam continue to shed particles if reinstalled? If so, it goes to the recycle bin!