Blew up the truck, deciding on a cam and trans upgrades

[54blackhornet]

I appreciate the fact you that you seem to genuinely love your long-bed and 350/350. I was beginning to think I am weird for liking my unloved long bed GMC....

[Warship2k15]

Run break in oil with lots of zinc in it for brake in.Then run oil with zinc or use a zinc additive.

Some people will disagree but flat tappet cams like zinc.If your oil doesn’t have zinc they will sometimes destroy lobes.
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[Myself]

I've been daily driving a 305 with flat tappet cam for the last 16 years. My 95 Grand Cherokee is also flat tappet. No issues. Last few sbc I built also no issues. My method has been Valvoline VR1 conventional for break in along with a small bottle of break in additive. Then continue with VR1 for the first 10000 miles. Then I switch to Rotella T6 synthetin. I run that T6 in everything from my pushmower to a 300hp supercharged jet ski.

[Warship2k15]

Originally Posted by Myself

I've been daily driving a 305 with flat tappet cam for the last 16 years. My 95 Grand Cherokee is also flat tappet. No issues. Last few sbc I built also no issues. My method has been Valvoline VR1 conventional for break in along with a small bottle of break in additive. Then continue with VR1 for the first 10000 miles. Then I switch to Rotella T6 synthetin. I run that T6 in everything from my pushmower to a 300hp supercharged jet ski.

As I said not everyone would agree.By the way Rotella changed the amount of zinc in t6 so what working before may not work as well now.heres some reading.
ikewise with motorcycles, though marketed as an engine oil for diesel trucks, Rotella T6 5w-40 synthetic oil has also found popularity with drivers and tuners of gasoline powered vehicles that utilize turbocharging or other forms of forced induction. Several owners of high performance model cars have adopted its use due to its high heat tolerance and its resistance to shearing. Rotella T6 is a Non Energy Conserving Oil, and does not meet GF-5 Oil specifications. When Rotella T6 was revised for the API specification(for use in spark ignition engines), its Zinc levels were effectively reduced. Higher(content) Zinc Additives(ZDDP) are required for flat tappet engines and cartridge bearings, which In previous formulations Rotella T6 had desirable levels of Zinc(ZDDP).
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[demian5]

Originally Posted by Warship2k15

Run break in oil with lots of zinc in it for brake in.Then run oil with zinc or use a zinc additive.

Some people will disagree but flat tappet cams like zinc.If your oil doesn’t have zinc they will sometimes destroy lobes.
Posted via Mobile Device

I made sure to buy the recommenced additive from the cam manufacturer for the break in.

[demian5]

Made some progress. Got the heads on the short block.

[demian5]

More progress.

[demian5]

Made some progress. Got the old motor and trans out. Cant tell if the crank broke at the 1/2 journal then grenaded #1 piston, but the piston and rod are done (oh and the crank). Couldn't rotate the crank so the converter had to come out with the motor.

While out, I had the trans rebuilt at Transmission Masters in Santa Ana, CA. My son and I installed the motor and trans this weekend.

[toolboxchev]

Take what someone else will throw away and make something out of it, The American Way!

Good to see that its coming back together for you.