The only point I was making is about power band and the RPM that can be used. I would need a lot of teaching on how to most efficiently drive one of these courses. The principle of how much power you make with a certain displacement and the appropriate gear associated with a higher RPM range just makes sense for all out acceleration out of the corners and in the straights.It's pointless for yourself and myself to argue about a discipline neither has competed in. I'm going to trust the high level competitors whom regularly post in the road race/autocross threads on this site.
If you scale a power band between 2500 RPM to 6500 RPM, that equates to 3500 to 9100 RPM, even if you make enough torque at 3K to accelerate well out of a tight 180, that scales to a top end of 7800 RPM. I would suggest that is unreasonable for the average competitor, serious valvetrain componentry, and high maintenance. But I'm glad you got your opinion out there, not good to stifle one's very own self!
Great job on the championships. With the cam you’re talking about there is absolutely no doubt the dual plane will work best for you. I was just rambling off about the hypothetical advantages and disadvantages associated with an RPM range .Just to let you know I have won 3 SCCA season championships in SOLO 2 (Autocross) So I have a pretty good idea of what works and what does not.
This motor that I asked about is only a place holder as I accumulate the rest of the parts for my long term engine.
All of my experience has been with 302-306 ci engines, so I was just seeing if anyone had more experience than I do when it comes to a 351w mild combo.
My gut feeling is the Performer RPM, intake with the E303 cam, however if someone here has tried that combo and had feed back it would be great.
And yes, if a car is set up properly you will run most tracks in a single gear, depending on engine operating range and transmission it is normally between a 3.25 and 3.75 ratio.
If you ever get a chance get out and try it, regardless if your car is set up for it or not you will have a blast!If there is a tire rule and it’s being run in parking lots and airstrips it’s traction limited and now makes a whole lot more sense to me. I’m the guy who hit a home run ten feet over the fence but was mad I didn’t hit it fifty feet over. Why use a a screw driver when a hammer will work. Sounds like a whole lot of fun and a very disciplined skill. Never mind me. 👍
Exactly. Ultimate streetcar challenge type of stuff.👍I regularly watch the Optima street car challenge on TV, some of the best of the best compete in this series. These competitions always include an autocross, one of the most difficult competitions IMHO, and very entertaining.
Would it be worth the extra expense to have a custom cam (and probably springs as well) in this particular "place holder" engine? I'm sure you could do better than the alphabet cams as, no doubt, you must also be aware. I'm just not sure how much difference it would make, and how long this engine will be in the car. I realize no one knows how long before certain parts start to show up, it would be unfortunate to spend good money on this temporary engine and then yank it a couple events into the season. Some judgment, some guesswork.I'm totally open to buying a new cam but just really want whatever cam I go with to work with my steel distributor gear