Your are correct! Not with OEM production parts are you going to see 10K, well maybe once, for a few seconds....

Do a little math and calculate the piston speed up and down, not to mention stopping and restarting at TDC and BDC...The forces are off the charts!
Too bak KG's not here, he would run the calculation on a napkin.....

I worked on the LS7. A 505 HP naturally aspirated 427 ci small block for the corvette.

It had a 4140 Chrome moly forged crank, titanium rods, titanium valves, special aircraft grade 8 rod and main bolts, special forged pistons, full floated with oil squirters underneath, dry sump system pulling a vacuum on the entire engine to evacuate all the excess oil out, and the list goes on and on. It was also super balanced, much tighter than normal factory specs. That motor was good for 7.5K until fuel cutoff hit.

Weak link in that motor was the valve springs. Even with the finest materials known to man the valves will float at about 8K. In all SB GM engines the piston actually leaves the block, yes, you heard me correctly, pistons pop out beyond the block deck face. Think about that for a spell.

Now, nascar and drag motors don't use valve springs. They have special air bags that retract the valve after full lift. But these bags do not have infinite life and must be reinflated or replaced often. These airbags keep the valves from floating. Another system uses finger followers, camshaft direct acting, on the valve to open and close. Google Ducati Motorcycles cam arraignment. Their arraignment allows 10K with ease. I owned a 2009, 696 Monster, Ducati for a spell. Didn't want to die so I sold it.....It could go from off idle to 10K in a blink of an eye. A real Bi*ch to work on as well....

 

Speaking of kg, I dont know what happened, but I miss his input and knowledge......even if most of it was far over my head.

 

Even with my sol's engine built with wisco pistons and molinar rods I'm going to limit the rpms to 6500 even though I did a balance shaft delete. The head is brand new but otherwise stock, I did port match it to the intake manifold and I bought a new crankshaft. I've got way to much invested in the engine to try to run it above 6500 rpm plus valve float would be a issue. Yeah, 10,000 rpm from a old 283 is impossible.

 

You talk about MAX RPM but have you ever thought about how many actual revolutions A top fuel crank turns in a race ? About 570 light to light . Then its spent and gets a complete rebuild before the next run

 

Their running nitromethane which basically destroys the engine with each run and the sheer horsepower and torque their pushing makes the rotating assembly unusable more than once.

When those top fuel dragster engines blow up it's usually pretty spectacular, they have to strap the blower down or it'll go straight up about fifty feet

 

They run 4-Wide here in Charlotte once a year. It is crazy how the air pressure changes and you almost get lifted off the ground when all 4 Nitro's go off at once. I think my heart stopped also. I was standing with Force's crew a couple year's back and then went and stood at the start line when the Nitro dragsters went off. Crazy loud!

 

My Dad drag raced Novas in the early 1970’s and got 10,000 RPM’s out of his 283’s. It was a known thing back then that they could be built to do that.

All sorts of small block and racing forums have info on it.

 

I'd have to see it to believe it, even modern V8's have a hard time hitting 10,000 and that's with super strong and lightweight rods and Pistons which weren't even available back then. I'm not saying your wrong but maybe your dad embellished his stories a bit. Even if they hit ten grand they wouldn't last long

 

How about the jet dragsters! Unbelievable the speed and noise. They only run them 2 wide.

 

Formula 1 uses a 1.6 litre V6 that can hit 15,000 rpm but those engines cost millions of dollars and don't last very long plus their completely rebuilt after every race

Years ago at our local dragstrip a jet powered dragster lost control and plowed into the spectators killing two and injuring twelve others. I wasn't there to see it but the news coverage had picture from people that were there an it was a mess.

This is a high rpm motor that a tiny rotory. 30,000 rpm

A current F1 engine costs 10.5 million. Definitely a rich man's sport

 

I guess it's possible under those conditions for a two minute run time and a fresh engine each week.

It would have to been a 1969 or newer block. Chevy didn't have a small block 4 bolt main before then.

 

the LNF turbo motor stops making power with the stock turbo at about 6000rpm so even if the pistons could take it, there’s no more acceleration to be had.
I sat in and revved a new C8 the other day. Wow what a sound, very fast revs!

 

Our local GM dealership doesn't even have a C8 on the lot, the salesman said their sold before they hit the lot. I'd love to drive one.

 

RPM without breathing capability is just thrash. As was indicated above, th LNF engine peaks around 6,000.

I run an old British sports car I used to race to 7900, my Z4M to 8,000 and we had a Cosworth 998 cc engine in a sports racer that would breath to 10,000, but bear in mind that such engines are usually gutless low down - you have to keep them wound up and that can be tedious.

If you love RPM, see

 

I agree. An ICE is all about squish bang blow. What's the point of having high rpm if your engine is not ingesting the needed air and squirting enough gas across the rev range?
The above videos show highly modified cars.... well apart from the rotary RX8 that can kiss 9500 rpm in stock trim.

I do like a rev-happy engine. It adds to the sports car driving experience. But it has to be smooth and natural. Some engines are happy living in the 5000rpm range all day where most are about to puke its guts.