Main bearings small block chevy,rocket block
#11
Senior Member
EXPERT BUILDER
Join Date: Jul 2005
Location: Wylie,Texas
Posts: 276
Hey Mike, mine was a dry sump also, if you are trying to keep the excess oil out of the engine i dont think the drian holes in the lifter valley would be the problem. I think part of my problem was it had 16-1 compression and a 4.250 stoke. When my engine builder built it he had never built a SBC with a 4.250 stroke and wasnt sure it wouldnt try to throw the the rods right out of the block. The only problem i ever had was main bearings and im not sure it wasnt the rocket block. I had a freind with a 454 with a 4.125 stroke in a dart block with no problems and he is still running it after 5 years.
#12
Senior Member
MASTER BUILDER
Join Date: Dec 2005
Location: Rutherfordton North Carolina
Posts: 192
Originally Posted by topdragster5051
My block is a dry sump
#14
Senior Member
MASTER BUILDER
Join Date: Dec 2005
Location: Rutherfordton North Carolina
Posts: 192
We use .003/.0032 with .0025 / .0028 on the rods.most drag racers don't get the oil temp up high enough before making a run and cold oil doesn't flow very well,this problem is worse in a dry sump engine where the oil isn't in the engine very long. you need light weight oil and a heater on your dry sump tank to get the oil above 160 deg before making a run,we use Gibbs XP3 which is a full synthetic 10/30 weight in normally aspirated engines and XP6 in the blown, turbo and heavy N20 engines. its 15/50 Bill