Billet cams and lifter supply

[John Duzac]

Originally Posted by nolongerracing

I don't know what the answer is, but it's not a roller cam!!!

Looking at the photograph of damage to the cam lobe makes me ask one question. What brand/type of oil was used in this engine?

The reason why I ask is my new 350 engine had about 30 runs on it and began to run slower and slower. I checked the leak down and one hole had 40%. I sent the engine back to my engine builder. It was discovered that all 8 pistons were ruined, along with the tool steel lifters. I always used Joe Gibbs oil and never had any problems. Gibbs oil was sold and manufactured under the name of DRIVEN oil. Samples of the used oil were sent in for testing. The results have not been received yet. Has anyone had issues using DRIVEN oil?

[nolongerracing]

Originally Posted by John Duzac

Looking at the photograph of damage to the cam lobe makes me ask one question. What brand/type of oil was used in this engine?

The reason why I ask is my new 350 engine had about 30 runs on it and began to run slower and slower. I checked the leak down and one hole had 40%. I sent the engine back to my engine builder. It was discovered that all 8 pistons were ruined, along with the tool steel lifters. I always used Joe Gibbs oil and never had any problems. Gibbs oil was sold and manufactured under the name of DRIVEN oil. Samples of the used oil were sent in for testing. The results have not been received yet. Has anyone had issues using DRIVEN oil?

This is a "steel" stocker cam that had Shubeck lifters. 240/500 spring pressure. VR1 oil most of the time. Gibbs or Driven when needed. May have 200 runs on it. 15 of the 16 lobes are like this. Notice it's in the same place on the lobe. Joe Shubeck told me this is from a poor core or poor heat treat. He said to treat the cam lobe as a new "highway". As soon as the first little imperfection is found and tires keep rolling over the same area you create a "chuck hole". Thats what we have here.

[Mike Taylor 3601]

Originally Posted by John Duzac

Looking at the photograph of damage to the cam lobe makes me ask one question. What brand/type of oil was used in this engine?

The reason why I ask is my new 350 engine had about 30 runs on it and began to run slower and slower. I checked the leak down and one hole had 40%. I sent the engine back to my engine builder. It was discovered that all 8 pistons were ruined, along with the tool steel lifters. I always used Joe Gibbs oil and never had any problems. Gibbs oil was sold and manufactured under the name of DRIVEN oil. Samples of the used oil were sent in for testing. The results have not been received yet. Has anyone had issues using DRIVEN oil?

I started to use Gibbs break- in oil once... warehouse gave me a case to try..I was assembling my own engine,grabbed a quart....oiled up mains and installed crank(had already checked bearing clearance) crank wouldn't turn... pulled it back out... the oil did'nt have any slickness at all... cleaned off bearings and crank... lubed it up with Brad-penn or lucas break-in oil... set crank back in and torqued down... spun just like it should... I dumped that quart I opened and the other eleven in the used oil barrel...
looking back,I should have sent back to be checked...

[GUMP]

Lets hear about your engine spec's and what you use for a rear and trany. How about the suspension.

Both the LT motors that I am campaigning run a stock rocker, beehive valve spring, and a full travel hydraulic lifter. The pistons, rods, and cranks are what Chevrolet put in them.

All of the transmissions and some of the converters are from my LT1 F-Body days.

The rear end is the one that came in the cars. A twelve bolt would be faster. I would prefer a torque arm. I actually proposed that to GM in 2010. The accepted replacement for the independent rear in all new cars seems to be the four link. I really don't see it as being any better than anything else in stock.