WE SPECIALIZE IN ALL DOMESTIC CYLINDER HEADS, NO LIMITATIONS! ALL VFactor 23º SBC cylinder heads use a USA ProFiler core special made for SRH Induction (SRH176-X-02) "We DON'T sell flow numbers! We sell RESULTS!" - Chad Speier/owner "Your 23º stuff is the best I've ever had across my flow bench or dyno."- Super Stock engine builder "I can't do any better (23º SBC) so why not get them from the guy that has done all the R&D to make them produce power"- Darin Morgan "The burr/ported manifold made just over 10hp more at 6900 and an average of 7hp more from 6300 to 7600." - Circle track engine builder
I love your vids .I just retired from trucking at 62.Im about to tear apart my 355 bracket engine for fun,and build it with the latest parts,amazing machine work.Your work is second to none.Your port expertise is stunning.Thank you for sharing work Ive never seen before.So educational.
Is this to keep a rules based casting or something? Why wouldn't you start with a raised runner head with a shallower valve angle already? I guess, is what I'm wondering. Sleeper project?
Great information in this video if you understand it at all about math formulas and knowing them thanks for sharing your knowledge wish i had better math skills
YOUR A BEAST.. I like the fact you show your work not just show flow numbers.. If I can afford your knowledge to do my next set of heads I'll be calling you..
It would be very interesting to take a propane rosebud and put some heat into the exhaust port for a little bit and then measure to see how much it moves around.
So seems funny that many won't use a stone on seats because they think the abrasive embeds in the seat and ruins a valve job...but they're more than happy to use a stone hone in a valve guide....
Good Tech Chad. I always belived in grinding seats. Nice finish process for sure. The Sioux is the best, in my opinion. Thanks for sharing. Have a great day. 👍
Nice. In Stock and Super Stock (and other classes) you can tell by how far under the index you are, whether, or not, the engine makes power. If you are 1.00 under, that's good, if you are, .100 under, that's bad. LOL!
I use the Sioux stones and holders with water cooling, i get mirror finish on the seat and stones last longer. I worked as a teen in a factory that made engines, all their seats were finished with a grinding process.
Mannn I’ve been doing this for the past year at my shop, I’m glad to see someone else doing this honestly. I’m 22 & have been working at a machine shop for going on 4 years. I haven’t put a runout gauge on it like you did but I always noticed that it made the vacuum gauge reach max quicker. Sometimes my boss is like “wtf are you doing” haha but I do it whether I’m doing a valve job with stones or on the guide machine with a cutter. The way I look it especially when people say “oh well when the head is torqued or, when it gets heat in it” I think that’s all the more reason it should be done. It also saves a lot of money in stones because you’re only spinning it by hand and not putting much load rpm on it. I just use it to basically polish & true up the seat, it also gets rid of any chatter marks especially on nickle chrome seats or other harder seat alloys. I may not have dozens of years of experience doing this kind of stuff but I can see with my experience so far of machining/working on cylinder heads on almost every day in the past few years that there’s no reason not to do this.
