197@.200 would be huge for a lobe that’s 267@.050.
It would still be quite big for a lobe that’s 273@.050.

Might be close to a HXL lobe. Lobe 2233 is 303 advertised, 274@050 and 197@200 with 454 lobe lift.

The Kaase lobe seems to be a little more aggressive than most of the lobes I could find in the Comp lobe family book. Maybe Kaase is taking advantage of the larger cam journal size that the big Fords have?

Let me quantify my previous statement………

It seems like a pretty quick lobe for a combo using large steel valves, 1.75 rockers, and springs that are only 600lbs open.

I’m not going to second guess Kaase, so the proof of concept will be told on the dyno.

That being said, I don’t feel like the cam(from what we can tell thus far) and the springs/RR are that well matched.

If after a couple of hundred trouble free 1/4 mile passes, and the springs still test good afterward……..then it can be said the combo is well sorted out.

Made a little more progress on the project. Got the oil pump installed as well as the pan. Had to order some step down studs in order to put the pan on. That was a new one for me. Studs are 5/16 in the block but the pan gasket only takes a 1/4 inch bolt. So the studs need to step down from 5/16 to 1/4.

The oil pan is a custom from Kevko. Big box pan with a tray and some baffles and a swinging door. I'm sure it is too big to fit in a car but it might fit in a boat or a truck. In any case, it should work find on the dyno. The oil pump is made by Kaase. Guess these engines had problems with busting the oil pump casting so he designed a beefy housing and had them cast. Kind of cool that he is out there solving problems by making parts.

The SB Chevy with the Moroso oil pan that is sitting behind my 521 was just run on the dyno. It made 783 hp at 7300 rpm which is the most power that we've ever seen from a SB Chevy engine. It had some windage problems so the owner is rounding up parts to hang a vacuum pump on it. Who knows, with the vacuum pump it might crack 800 hp. That is just a crazy amount of power for a small block.

Looking good. It is hard to believe what SBC's (and Mopar and Ford) are making recently. There are a handful of SBC builds that have crested 800hp even with 23 degree heads and cast single carb intakes. Some of the best 23 degree stuff is done by Chad Speier. Those flow over 350. When you step up to some of the more recent head designs and improved valve angles, the hp goes up rapidly from there. I love seeing what Guys like Brett, Chad, Bob Book, M@M, Uratchko, etc make for power. It's a whole different level.

I agree. A friend runs a gen3 392 hemi, dynos 775 hp with stock class rules heads, stock valvetrain parts,save for cam and springs i believe. Car runs the numbers to back that up.

Rocker arm ratio appears to be good. Getting about 0.790 lift with everything bolted up and ready to go. Lash is 0.018 on the exhaust.

You're probably right, the variation and listed values probably differ because of various lifter wheel diameters. The HXL lobes have a good reputation with a few people I know.

Not that it'd matter to anyone but I am consistent with this opinion/well said.

Thanks for sharing this build here Andy, it's valuable to see the other makes products for any number of reasons. I've always been a closet BBF admirer too.

So that’s .790 net lift after lash?

Or, .790 lift at zero lash?

If it’s after lash, the RR is higher than 1.75

You must be getting close to making some noise.

Lift numbers are net after lash so the ratio is just slightly more than advertised.

Engine is close to being ready. Need to fill with oil, prime it, then install spark plugs and distributor. I have to use the Edelbrock Victor intake for now since the good Trick Flow intake is still on back order. The ports in the Edelbrock intake are small so they will kill some power but it was the only intake I could buy.

Not sure when we'll put it on the dyno. Depends on the schedule. Lots of engines going together now for race season.

Any updates?

Sitting on the stand waiting to run on the dyno. I had to fabricate some parts for the vacuum pump system so that took some time. But now it is ready to go, just waiting for a hole in the schedule.