blown3qtr

Anyone able to run a rollmaster timing chain and a melling high volume oil pump, and get the front cover to fit? I don't see any way this **** is gonna fit. The cover behind the seal is hitting the front of the pump.
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I put yellow marking grease on the back of the cover at the lip behind the seal, and on the heads of the bolts for the pump cover. The grease behind the seal left a nice ring on the pump. the grease on the bolts left nothing on the back of the cover.

I'm building my 408. Should I use an ls2 timing chain or a different pump?

1slow01Z71

iTrader: (36)

I ground down the lip on the bolts holding the front cover on the oil pump and it fit fine with the gasket in place.

blown3qtr

Yeah I remember that in your thread. My bolts aren't hitting the cover. It's the lip behind the seal that's hitting the pump. Was your's the melling high volume pump?

I tested the stock pump, and it clears fine w/ the gasket in place.

1slow01Z71

iTrader: (36)

What do you mean its the "lip"? Mines the stocker that I ported myself.

blown3qtr

O.K., The front engine cover has a recessed lip behind the crank seal, where the back of the seal sits against. The back side of that lip on the front cover is hitting the the front cover of the pump.

The Melling pump is fatter than a stock pump.

thunder550

iTrader: (70)

I used a Melling stock replacement pump with the Rollmaster and had zero clearance problems. The high volume pump must be bigger.

blown3qtr

The stock pump seems to fit without any clearance problem. The melling high volume pump measures about .100 thicker than stock. I'm ordering a new pump today.

Thanks for the info.

Quik

iTrader: (7)

i have ap orted ls6 pump with rollmaster double chain and no issues on either of my motors

blacksheep

iTrader: (1)

I had to grind a little on the front cover to get my Melling hv to clear.

blown3qtr

Were you using a double roller too? I don't see any way min would work. I'd have to grind down alot right behind the seal. I'd like to use the melling, but I've got a new gmpp on the way.