Dyno Cost?
#2676899
07/12/19 07:42 PM
07/12/19 07:42 PM
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Joined: Jan 2003
Posts: 4,288 Danville, NH
Mopar_Mike
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OP
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Joined: Jan 2003
Posts: 4,288
Danville, NH
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Not sure if this is too general a question, but thought I'd ask. I have a 426 hemi already built and in my car. I was thinking of taking to a shop to put it on a dyno. I plan to have them change to a solid cam and change the bearings, so I'll benefit from break in time too, but my question is about what does it cost to run/tune an engine on a dyno? I would imagine all shops are different etc. but $500? $1000? more? Thanks.
RS23L7 4-Speed
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Re: Dyno Cost?
[Re: Leigh]
#2676922
07/12/19 09:16 PM
07/12/19 09:16 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,514
So. Burlington, Vt.
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In the northeast, you can expect to spend $500-1000 depending on how long it’s on there.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Dyno Cost?
[Re: Mopar_Mike]
#2676924
07/12/19 09:21 PM
07/12/19 09:21 PM
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Joined: Aug 2003
Posts: 43,308 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,308
Bend,OR USA
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Engine dyno time here in Oregon varies from $500.00 up to $750.00 per day. Their are several machine shops that have engine dyno that will only dyno engines they build and do all the machine work on I had my bracket car on a chassis dyno in Medford, OR last month for around a half day, we made 6 pulls on it and did some timing and jetting change on the engine. The dyno owner is a drag racer also and ended up charging me only $100.00 for that time and then came out to the local drag strip for the evening also to see my car run
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Dyno Cost?
[Re: Cab_Burge]
#2676929
07/12/19 09:46 PM
07/12/19 09:46 PM
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Joined: Jan 2003
Posts: 4,287 Morrow, OH
markz528
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master
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Morrow, OH
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I think I paid around $800 earlier this year at a top engine builder.
67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......
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Re: Dyno Cost?
[Re: AndyF]
#2676990
07/13/19 08:01 AM
07/13/19 08:01 AM
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Joined: Jan 2003
Posts: 6,392 nielsville, minn.
quickd100
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master
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nielsville, minn.
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Andy is spot on. Although mine is setup for my use I run individual EGT probes and an O2 sensor along with an airflow turbine and automated weather station. I like to run the headers that will be used on the car and I have welded in EGT bungs with permission. I have a collection of various carbs but like to dial in what's going to be used on the motor. Using their carb and headers gives a more accurate account of what you can expect once the motor is in the chassis. One Moparts member and dear friend brought his 512 street motor over to break in and tune. We fired it up to break in the cam, set the timing, and brought it up to 2200rpm. Right away it started leaking oil from the rear main and the A/R was Dead Lean. Shut it off and pulled the carb apart. It was a Demon Silver Claw, said he'd paid a premium to have to setup for his combo. Between the time he bought it and the time we dynod it the company had filed. Anyway once apart we found a broken drill bit still in the primary metering block. They left it in there and just drilled another hole next to it. The whole carb was pretty much junk. We threw my 850 Holley on it and it was spot on, the motor was using 780cfm so I recommended a 800 Edelbrock as it was a street cruiser. The rear main leak was caused by interference between the rear main ARP studs and the seal retainer. In conclusion, look around, ask questions, try and find one where you can use your own headers and carb.
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Re: Dyno Cost?
[Re: AndyF]
#2677285
07/14/19 10:19 AM
07/14/19 10:19 AM
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Joined: Jan 2003
Posts: 16,932 NC
440Jim
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I Live Here
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NC
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Good post by AndyF.
Do they have Mopar flywheel, bellhousing, starter, headers, etc. And will you do the tuning, or them? FWIW, I paid $500 basic dyno session and they did all the work (tuning, valve lash, carb & spacer swaps, etc.) In addition, I bought some carb studs and carb spacers to try from them. They asked me to drop it off the day before so they would mount it all up, and I showed up the next morning to begin the dyno runs. I took it home that same day. They had race gas, but I brought some 93 pump to use after initial pulls with their carb and race gas. Did back to back with my carb and both fuels.
I recommend starting with their proven carb, and swap yours after initial pulls and break-in are done.
Jim
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Re: Dyno Cost?
[Re: 440Jim]
#2677298
07/14/19 11:17 AM
07/14/19 11:17 AM
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Joined: Jan 2003
Posts: 31,078 Oregon
AndyF
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I Win
Joined: Jan 2003
Posts: 31,078
Oregon
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Flywheel is a good question and so it bellhousing and motor mounts. It just comes down to a question of if the shop has everything needed for a Hemi or not. Most shops are not going to have the ability to run any engine. The Hemi has unique front motor mounts so if they haven't run one before they might need to build some brackets. If your Hemi has an 8 bolt crank then you'll need to double check to see if they are set up for that. Most shops are going to have the Mopar 6 bolt setup but they might not have an 8 bolt adapter.
You'll also want to ask about the water pump. Are you going to use a belt driven water pump or do you have electric? They will want you to remove the thermostat if you have one. I had one shop that required an input shaft bushing in the crank so their driveshaft would fit properly.
Last edited by AndyF; 07/14/19 11:18 AM.
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Re: Dyno Cost?
[Re: AndyF]
#2677371
07/14/19 06:07 PM
07/14/19 06:07 PM
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Joined: Jan 2003
Posts: 4,288 Danville, NH
Mopar_Mike
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Posts: 4,288
Danville, NH
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Thanks again all. Sounds like the best thing to do is go down there and talk to someone. Tell them what I have and what I am looking to have done. See what they say and what they will need to do the job.
RS23L7 4-Speed
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Re: Dyno Cost?
[Re: AndyF]
#2677414
07/14/19 08:44 PM
07/14/19 08:44 PM
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Joined: May 2015
Posts: 1,134 Lost in Time
Iowan
super stock
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super stock
Joined: May 2015
Posts: 1,134
Lost in Time
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Something that I have noticed speaking of carbs is that the 440 for my Plymouth will run about 3 jets rich on the dyno from its fastest times. I figure it is from the sealed air scoop forcing air at the carb?
Have a great day Iowan
"obsolete is neat"
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Re: Dyno Cost?
[Re: Iowan]
#2677444
07/14/19 10:43 PM
07/14/19 10:43 PM
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Joined: Aug 2003
Posts: 43,308 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,308
Bend,OR USA
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Something that I have noticed speaking of carbs is that the 440 for my Plymouth will run about 3 jets rich on the dyno from its fastest times. I figure it is from the sealed air scoop forcing air at the carb? Your results are not uncommon As the professor Warren Johnson has said many times, we don't race dyno, do we I've learn to get the tune up close on the dyno and then finish tuning that motor in the car it will be raced in at the track it races on I use the spark plug and time slips to help get me the best results at the track, when we have the time needed to get it done
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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