SBC Oil Restrictors

[Robert Simpson]

For a SBC stocker build, using a SHP block and Trend solids. Was told to either restrict the lifters (pushrod cups) or install the oil restrictors in the block. The block restrictors have a .090" hole? Does this sound correct or does this block restrictor need to be bigger etc? I would like to here what racers are doing/using when it comes to restricting oil.

Thank You

Robert

[Mike Taylor 3601]

my experience with trend lifters was block restrictors didn't work, so I made my own and when I got enough restriction the rear rockers were good and by time got front wasn't oiling and had no oil coming out around lifters.... I had to fix that night.. so I made restrictors and put in lifter.... I believe trend has restricted pushrods that will do the job..
PPPC lifters.. they don't have that issue, all trend needs to do is move the hole in the lifter about a 1/4''and problem solved.
if need to know how I did the lifters you can call me 606-678-3039 I can tell you a lot faster than I can type it

[Robert Simpson]

Mike thank you for the reply. So that I understand you correctly the oil restrictors for the SHP block did not restrict the oil enough? When I prime mine now (with no restrictors) the front rockers oil almost immediately then proceed to oil the back rockers very quickly.

Is anyone using oil restrictors in a SHP block using solid lifters? or is it better to flood the oil passages and then restrict at the lifters?

[FED 387]

Robert---look at Dartheads.com they have a 5 page instructional list regarding those blocks what to do what not to do and how to do it along with a recommendation for the subject of oil restrictors---FED 387

[Alan Nyhus]

With the Trend lifters, restricting top end oil using Trend lifter cups with a .014 push rod oil hole worked best. -Al

[Mike Taylor 3601]

Originally Posted by Robert Simpson

Mike thank you for the reply. So that I understand you correctly the oil restrictors for the SHP block did not restrict the oil enough? When I prime mine now (with no restrictors) the front rockers oil almost immediately then proceed to oil the back rockers very quickly.

Is anyone using oil restrictors in a SHP block using solid lifters? or is it better to flood the oil passages and then restrict at the lifters?

BBC I was working on without restrictors put so much through oil was aerated, and pump sucking air in no time.. once I got lifters restricted it gained about 20-25 LBS oil pressure..

[Alan Nyhus]

Originally Posted by Mike Taylor 3601

BBC I was working on without restrictors put so much through oil was aerated, and pump sucking air in no time.. once I got lifters restricted it gained about 20-25 LBS oil pressure..

Yeah....they'll fill the valve covers in no time flat, won't they?

[Mike Taylor 3601]

Originally Posted by Alan Nyhus

Yeah....they'll fill the valve covers in no time flat, won't they?

I never got to putting valve covers on... I always check rocker oiling, while priming on stand, before intake goes on...so I made a mess...LOL

[nickh]

I have sold over 40 pair of these restrictors and never had a complaint, and all stated that it solved their problem with the SHP block.

[Robert Simpson]

Thank You everyone, I got the restrictors from Dart to try. I will see how they work out.

Thank You