For those of you that are unfamiliar about blown alky dragsters in the early 90's: Most every car I saw shifted at 9500. Most were short deck hemi's that were anywhere from 426 to 450 ci. After the titanium valve springs came out, they would last 6 runs before changing. I ran vasco jets and had to replace them after 2 or 3 runs. These were 3.75 or 3.85 stroke engines with a 780 gram piston.
there was a local running an early camaro with a 267" sbc in F/G that pulled the frt wheels when he shifted 5th turning 10,000+ running 7.17 gears and broke more than 1 dana 60
Three things that make a high rpm engine, big bore/short stroke,big cam/strong springs, big bank account/ inherantance
i had a 301 made lots of runs at 10500 it had 650 gears and a 4 speed they run like sewing machines if built right , the good ol days
I LOVE these cars, they are just the baddest racecars ever built, Ryan won't let anybody post pics of them because they aren't traditional. I say they should be allowed here because of the technology. Sweet, Thanks for posting. btw, i crewed for Irish Jack Murphy on the very first rear engined super.
427 aluminum rods, 50 pass's @ 8700 shift point, then the rings got weak. Back in the day puttered with a '68 stock short block big journal 327 that was a ligit 350 hp piece. It was in a Chevelle, build sheet showed the engine, cleaned up the heads and added a Engle cam, it pulled great up to 8000, broke the main shaft collar off a hemi 4 sp with it. Dudes around here used to use junk yard 327's for the dirt mods back in the 60's, add the Hilborn and spin 'er up to the sky, phords never were able to do that shit. I always felt the 327 was the greatest engine ever devised that poor boys could afford. Rat motors right after that, and I like Phords a lot.
I had a bone stock 1966 289 Ford with 100HP shot of Nitrous go 13,700 RPM........... I know it's fact because it had a brand spanking new Chinese made tach
9.2 deck Ford Motorsports G351 block, Bryant 3.550 crank, 6.2 Carrillo rods, custom Wiseco 4.040 pistons, roller cam w/ Isky Red Zone roller lifters, Jessel shaft rockers, 7/16 CV Products push rods, titanium valves and retainers in Ernie Elliot "Yates" style heads and with Motorsports intake, dry sump, spring oiler valve covers......nothing spared. Turned it 8600-8800 RPM at the end of every straight for 25 to 40 laps every night it raced. Never a problem. Circle track dirt late model. Way harder on motors than simple drag racing is. It gets hooked to the track more than you would think possible. Put a full season on it with new valve springs every 12 nights. ran the motor 30 nights without a problem. It was turned over 9200 a few times when we missed the gearing at a new track. Put a 9400 chip in the MSD box in case we broke a driveshaft. SPark
I don't how many rpm's this Willys was turning, but from the sound of things, it was way up there. Pretty cool video.
I love the blown alcohol funny cars and promods, they shift 8500 or so. That is about a 540" motor with biggest blower they can get (probably 35-40lbs boost)and sidestep at launch. One car i was involved with had 1/4" gap in the throttle blade for burnout and it would hit 9500rpm! I thought my comp motor was bad, you don't even get these guys attention until 8K or so with a piston big as a quart can. An then you got the truck pullers, they top out at 9K for about 20 seconds, that is about a 650" naturally asperated motor. I worked on an outlaw truck that had 601" ford with 2 stages nitrous and would regularly zing to 11K. That guy was a legand and would fill the stands just to watch him pull, he'd run headsup against blown alcohol tractors. I remember he once hit 8K just unloading it from the trailor! he'd bring the place to a standstill - the drag racers would come and watch and just shake thier heads. It was a high-maintenance motor for sure. Those were fun days.
My uncle runs a 565 big block chevy, well kinda. World block, dry sump, big chief heads yada yada yada and he spins it 9000. Hes got like 40k in the motor but it pulls 9000.
I've heard that for decades, so how come the old 750 Hondas ran aluminum rods for a hundred thousand miles and spun 10k at will? Been wondering that,,,,,,,,,,
when i was a teenager i had a 13.5 comp 289 that turned 10,000 + it was a real mofo to keep running . i was to young to know what to do with it now i wish i had it now
Never saw a 750 honda with aluminum rods....forged steel yes, aluminum , no.Is it possible of course, but is is a fact , that aluminum rods are higher mantence that steel, and they do have an expected amount of cycles before they fail, not IF they fail , but WHEN. Aluminum unlike steel age hardens, work hardens, and does have a limited useful life, just ask anyone who sevices airplanes, about "cycled out" parts, or in other words, parts that have been cycled, to the end of there safe life, much after that , failure can happen at any point.:eek Oh the BSA in my avitar pic Does have aluminum rods, but they dont spin 10000 rpm either , and the upgrade...you guessed it steel carrillo's....Shawn
Building a 301 out of a 283 was done all the time back in the '60s. You can still do it but you will need to check for a block that can take the .125 over. A good machine can do an ultrasonic check on the block to see if it can take the bore. My local machine shop here in San Diego area (Rick's Machine - Great Shop!!) has been in business for over 40 years and Rick is still there making sure things are done right. I was considering building a 301 out of my 283 and it could have taken the overbore, but I decided against it. I will be putting some real miles on my Nomad (100 miles per day) and I plan on at least one rebuild on the engine. But if you have a good shop and a good block, you can do it!
The Jalopy Journal
