8k rpm ...

-
yellow rose said:
Post up your tire size and gear ratio. Then we will know how accurate your tach is. I say it's junk.
Click to expand...
Please
My buddy Mark H campaigned a stock bodied Duster with a destroked 340, that I’ll admit wasn’t all that quick, would routinely have the mechanical telltale tach stuck on 11,500-12,000 rpm. He claimed 13,000 but I saw the tach after a pass many times.
 
12swinger said:
I’ve buried a 9,000 rpm tach more times then I can count for over a decade in a 340
Dual purpose street strip car. Nothing exotic or expensive.
Only issues were an occasional broken valve spring, which meant I carried a spare, and got pretty good at changing at the strip.
Ported J heads with the .557 sold cam and a 160 pounds of valve seat pressure.
4.56 gears, and 4500 stall 3200 lb Dart in my profile
Click to expand...
I don't believe you, but it really doesn't matter if I do. lol but I have to wonder what was the oil pressure at 9000rpm
 
fishmens67 said:
I don't believe you, but it really doesn't matter if I do. lol but I have to wonder what was the oil pressure at 9000rpm
Click to expand...
I don’t lie.
Hamburger oil pan, that held 8 quarts. Hv Melling pump, Ed told me to Swiss cheese the windage tray.
It ran a decade with only a few times coming out to inspect and file fit new rings, and fresh bearings. Same rods, and crank, forged junk speed pro pistons.
Always had 63-70 pounds of oil pressure above a couple thousand rpm. fully grooved bearings with .003 clearance.
Do I recommend spinning a 340 that high?No. But don’t act like it’s not achievable, cause that’s not true.
When using the nitrous I shifted around 6,500 cause when it my brain to hand time was around 7,500
But on the motor I spun it a little harder, as it always ran better, closer to 8,000
This engine is a little bigger and will be shifted at 7,800
 
4127B6B9-EA22-4AAB-9F65-C4796805E3FF.jpeg
This one
 
12swinger said:
Please
My buddy Mark H campaigned a stock bodied Duster with a destroked 340, that I’ll admit wasn’t all that quick, would routinely have the mechanical telltale tach stuck on 11,500-12,000 rpm. He claimed 13,000 but I saw the tach after a pass many times.
Click to expand...


Those tachs were notorious for two things. Inherent inaccuracy and cable whip.

The longer the cable, and the more bends in it, the less accurate it was and the more the cable would whip the needle.

Had a buddy running a mag with a tach like that. I think it was a Moroso but I'm not 100% sure on my recollection on that.

He ran a magneto so he didn't want to swap tachs. And he said he always shifted at 8800 and the tell tale would show that. The issue was nothing added up. His MPH, gear ratio, tire size...it was all wonky numbers.

He finally bought a new Auto Meter tach for a mag that had an inductive pick up and had it checked to make sure it was accurate.

Next thing you know...he is actually shifting at about 7800 and crossing on a good day at 8000.

Which, not coincidentally matched his gear ratio, RPM and MPH.

Many tachs are junk.
 
yellow rose said:
BTW I have a swinging pickup for that pan if you are interested. You can't buy that stuff any more.
Click to expand...
I have the Milodon pan that the center link runs through it, for a 340 and a 360.
I was never blessed to have the swinging pickup though.
I went to these pans, as the Hamburger pan was center sump.
 
yellow rose said:
Those tachs were notorious for two things. Inherent inaccuracy and cable whip.

The longer the cable, and the more bends in it, the less accurate it was and the more the cable would whip the needle.

Had a buddy running a mag with a tach like that. I think it was a Moroso but I'm not 100% sure on my recollection on that.

He ran a magneto so he didn't want to swap tachs. And he said he always shifted at 8800 and the tell tale would show that. The issue was nothing added up. His MPH, gear ratio, tire size...it was all wonky numbers.

He finally bought a new Auto Meter tach for a mag that had an inductive pick up and had it checked to make sure it was accurate.

Next thing you know...he is actually shifting at about 7800 and crossing on a good day at 8000.

Which, not coincidentally matched his gear ratio, RPM and MPH.

Many tachs are junk.
Click to expand...
You should have heard it though.
He had a couple come apart pretty dramatically.
He went Hemi and then big block with Zeeker heads a couple years later.
Set a 60 foot at Memphis msp that held for years 1.02
 
12swinger said:
You should have heard it though.
He had a couple come apart pretty dramatically.
He went Hemi and then big block with Zeeker heads a couple years later.
Set a 60 foot at Memphis msp that held for years 1.02
Click to expand...


Zeeker. Haven't heard that name in awhile. Before I converted my car to a 4 link from the ladder bars that were in it when I bought it, I called every single chassis shop in the country who would talk to me. Every single one of them said to leave the ladder bar in it. This was a stick car and 7000 on launch was about as low as I let it get. I knew the ladder bars were hurting it.

I almost gave up but I called Zeeker. Guy answers the phone and I tell him what I have and he says why the ladder bar? That makes no sense. It's bad enough at the launch but it will be equally as bad I the gear changes. Get rid of those and use a 4 link. Only guy in the country to tell me what I already knew. I only live about 2.5 hours south of Art Morrison. I had spent an entire Saturday up there talking with them. Went there to buy a 4 link, but they talked my dad and my buddy out of it. The sorry assed dude also spent his time trying to convince me to out a power glide in the car. I said I'd cut my balls off with a rusty butter knife long before that happened. What a pussy that guy was. I forget his name or I'd drop it here just to piss off the spectators.

Anyway, the guy on the phone was none other that Dave Morgan, the guy who wrote the Doorslammers chassis book. The only guy in the country who agreed with the 4 link (how is that for a mane drop??).

Eventually I went to Seattle and met him and went through his chassis class. Super nice guy and he wasn't afraid to tell a guy when he was off his rocker or his stuff was junk.

Well that's my Zeeker story and I'm sticking to it.
 
yellow rose said:
Zeeker. Haven't heard that name in awhile. Before I converted my car to a 4 link from the ladder bars that were in it when I bought it, I called every single chassis shop in the country who would talk to me. Every single one of them said to leave the ladder bar in it. This was a stick car and 7000 on launch was about as low as I let it get. I knew the ladder bars were hurting it.

I almost gave up but I called Zeeker. Guy answers the phone and I tell him what I have and he says why the ladder bar? That makes no sense. It's bad enough at the launch but it will be equally as bad I the gear changes. Get rid of those and use a 4 link. Only guy in the country to tell me what I already knew. I only live about 2.5 hours south of Art Morrison. I had spent an entire Saturday up there talking with them. Went there to buy a 4 link, but they talked my dad and my buddy out of it. The sorry assed dude also spent his time trying to convince me to out a power glide in the car. I said I'd cut my balls off with a rusty butter knife long before that happened. What a pussy that guy was. I forget his name or I'd drop it here just to piss off the spectators.

Anyway, the guy on the phone was none other that Dave Morgan, the guy who wrote the Doorslammers chassis book. The only guy in the country who agreed with the 4 link (how is that for a mane drop??).

Eventually I went to Seattle and met him and went through his chassis class. Super nice guy and he wasn't afraid to tell a guy when he was off his rocker or his stuff was junk.

Well that's my Zeeker story and I'm sticking to it.
Click to expand...
Loren Zeedyk was Marks mentor.
I knew Loren, but his health was going down when I met him.
His knowledge of chassis and brakes, to intakes and heads was enormous.
I have several Zeeker stories myself, as he visited Hogan race engines numerous times while I was there. I was called 12
 
12swinger said:
11.70s In the quarter 7.40s in the eighth on the motor.
6.80s-6.90 with a 150 shot. thousands of passes with nitrous which I only used on 1/8 mile tracks spinning hard.
Click to expand...



If I had to shift my stuff at 9000 rpm to run 11.70’s I would buy a camera and put and LS engine in it. Sorry but there is not excuse for doing that.
 
Hemirunner said:
Stock 273 block 8 sleeves and 3.75 bore for 292 cubic inches
Stock crank
5.4 H-beam Ford rods with EDM pin oiling
Diamond custom pistons with crappy 1/16 ring package
Wet sump oil pan and HV pump with oil crossover
Iron magnum style engine quest heads w/roller rockers, jomar girdles and pushrod oiling
Comp solid roller cam and lifters
Lots better parts today to make way more power

View attachment 1715429420 View attachment 1715429421
Click to expand...

This is all too familiar. There is a picture of a 292ci 273 engine with 8 sleeves taken in 2010. It has Indy/RHS-X heads, Jomar girdle, stock crank, Ford rods, roller rockers, push rod oiling, Comp solid roller cam and lifters, wet sump oil pan, HV pump, oil crossover (hidden by the paper towels). I had to drive from Morton, IL to Melling to pick up the sleeves and bring them back to be installed. It had to be re-sleeved because the first set of sleeves were offset and the valves hit the cylinder walls.

The cylinder head had to be repaired because the #7 exhaust port cracked and was leaking water during the dyno runs. I had three of these heads that had the #2 or #7 exhaust port with very thin casting in spots.

See post 109 in this thread.....I believe this may be 273 engine from those dyno sheets.

Is 426ci 360 a small block?
 
Last edited:
pittsburghracer said:
If I had to shift my stuff at 9000 rpm to run 11.70’s I would buy a camera and put and LS engine in it. Sorry but there is not excuse for doing that.
Click to expand...

Happily, just wanting to do it may be a good enough excuse. I remember Dad racing his 273 4-spd '65 Dart and saying, "Dammit Jimmy, I missed a shift out there and the tach said 9,300 rpm and it was on it's way DOWN!"
 
Last edited:
IQ52 said:
This is all too familiar. There is a picture of a 292ci 273 engine with 8 sleeves taken in 2010. It has Indy/RHS-X heads, Jomar girdle, stock crank, Ford rods, roller rockers, push rod oiling, Comp solid roller cam and lifters, wet sump oil pan, HV pump, oil crossover (hidden by the paper towels). I had to drive from Morton, IL to Melling to pick up the sleeves and bring them back to be installed. It had to be re-sleeved because the first set of sleeves were offset and the valves hit the cylinder walls.

The cylinder head had to be repaired because the #7 exhaust port cracked and was leaking water during the dyno runs. I had three of these heads that had the #2 or #7 exhaust port with very thin casting in spots.

See post 109 in this thread.....I believe this may be 273 engine from those dyno sheets.

Is 426ci 360 a small block?
Click to expand...
That’s it. I always wondered what became of those heads!
 
Hemirunner said:
Similar power per cube. That valvetrain was interesting to say the least.
View attachment 1715429766
Click to expand...
It takes a rebel to take a shaft rocker mount cylinder head and turn it into a stud rocker mount cylinder head.

You know, if we had run that engine with the head leaking water, it still would have won the dyno contest. Just fire it up and make the three qualifying pulls without shutting it off and then made the three scored pulls without shutting it off, and we had a winner.
 
Last edited:
IQ52 said:
It takes a rebel to take a shaft rocker mount cylinder head and turn it into a stud rocker mount cylinder head.

You know, if we had run that engine with the head leaking water, it still would have won the dyno contest. Just fire it up and make the three qualifying pulls without shutting it off and then made the three scored pulls without shutting it off, and we had a winner.
Click to expand...
Agreed on both statements! Hindsight is 20/20!
 
pittsburghracer said:
If I had to shift my stuff at 9000 rpm to run 11.70’s I would buy a camera and put and LS engine in it. Sorry but there is not excuse for doing that.
Click to expand...
I didn’t intentionally buzz it to 9,000 rpm
I drank back then and drove it on country back roads. Also at George Rays dragstrip I occasionally celebrated.
When you’re in your twenties, you’re invincible.
Ls engine lol
 
65-440 said:
Don't have a number in mind honestly, just want it to hold together !
This all stems from a guy near me with a 327/4spd 55 Chevy. He drives the **** out of his car, shifts at 8k everytime he drives it. Sounds amazing!
Click to expand...
Did u ever stop to think that his tach is wacko? Lots more than u think are wacko. Kim
 
You must log in or register to reply here.
-

Back
Top