Why is my new motor smoking????

Ok this is my first time building a motor I'm a real newb. Its a dive block over 30 stock crank stock rods stock rebuild pistons and new rings. All new bearings new lunati 61603 cam and lifters d3 heads that were cleaned up new springs to match the cam stealth intake 750 hp holly. Now the problem is if it sits a day or 2 it smokes when I crank it for about 30 seconds. I'm thinking valve seals maybe I'm not sure if they were replaced or not il ask motor guy tomorrow. Could I have done something wrong what do yall think ?

Thanks for the help Micah

Intake gasket pulling oil from the lifter valley? Or valve seals as you said.

Just on start up sounds like seals to me. I know you said you had matching springs, but you need to check the retainer ti guide clearance to make sure they aren't hitting and killing your seals. It could be the problem if you shop didn't cut down the guide and put on p/c seals.

Thanks guys I hope it's just valve seals I just hate seeing a new motor smoking like a cheby lol

Big block fox 339 wrote:Thanks guys I hope it's just valve seals I just hate seeing a new motor smoking like a cheby lol

Watchit now.. LOL Good luck man. Maybe its just the seals..

Ha I just messin my dd is a gmc don't tell anybody lol

Big block fox 339 wrote:Ha I just messin my dd is a gmc don't tell anybody lol

a chebby here say it aint so

As Blake already said, IF the valve guide height WASN'T machined shorter it will just smash the new valve seals again. The lift of that camshaft won't fit without retainer to seal contact using D3VE heads unless the guide height is machined.[/quote]

I didn't know that sombody else ordered the cam back when I didn't know anything about it I'm trying to get my motor guy on the phone and see what he did to the heads il let yall know thanks

Big block fox 339 wrote:Ha I just messin my dd is a gmc don't tell anybody lol

I knew you was a good guy..

Wel talked to my motor guy he said he put new seals and did the guides to match the cam he said take the valve covers off and ckeck the seals to make sure he didn't forget something

Big block fox 339 wrote:Wel talked to my motor guy he said he put new seals and did the guides to match the cam he said take the valve covers off and ckeck the seals to make sure he didn't forget something

Who did the heads??

Moody engine and machine (David moody ) in Louisville ms.

Mine pulled oil into the heatriser crossover and burned it. I resealed the intake and it was fine afterwards