402w stroker

[blykins]

With those heads and that intake, it will probably peak at around 6000-6200. For that kind of rpm with a SBF hydraulic roller, I like to run around 150 lbs seat and 400 lbs open pressure. Titanium retainers and/or lightened lifters will help out too.

It will be a little lighter on the torque, but the midrange and upper end horsepower will be very fun.

[madmaxx]

Well said, not that I have anywhere the knowlegde of blykins on engines. With stock lifters and standard valve train components, 150 /400 would be minium but once again I have limited knowledge only my own experience, I would think 170 /450, but hey every engine is different. I do like the idea of keeping it below 5500 rpm, just use a rev limiter. With heavier spring pressures I would use the redline break-in additive, you have some serious forces on your rocker arms, pushrods etc. Set your lash about 1/4 turn that way if they float no damage.

I am sure I will get flamed but some of the best lifters on the market are standard ford racing. About $140 for set of 8.

Originally Posted by blykins

With those heads and that intake, it will probably peak at around 6000-6200. For that kind of rpm with a SBF hydraulic roller, I like to run around 150 lbs seat and 400 lbs open pressure. Titanium retainers and/or lightened lifters will help out too.

It will be a little lighter on the torque, but the midrange and upper end horsepower will be very fun.

[blykins]

Originally Posted by madmaxx

I am sure I will get flamed but some of the best lifters on the market are standard ford racing. About $140 for set of 8.

I would agree with that for SBF's....unless you're going old school without a spider and need link bars.

As for spring pressures, if you're just going to 5500, 170 lbs of seat is not necessary. Sure you can run 170/450, but for something that peaks at 5500 rpm, there's no use in adding more wear factor.

For most SBF's, even with the heavier valvetrain, 150-155 lbs of seat will get you 6 grand and then some.