Re: H-I-J '76 Nova re-fit.
 

Gonna have a few days of slow rolling here (other stuff to do) so not much will be done. Today, got pretty much everything buttoned up, balancer, bolted the vc spacers on, filled it with oil and pre-lubed it, threw the valve covers on plus the distributor and wires at it. Gonna try to be back on it Saturday.
https://i.imgur.com/oxXfe3vh.jpg
https://i.imgur.com/sfAWFFTl.jpg
https://i.imgur.com/2gmsI5fh.jpg

Re: H-I-J '76 Nova re-fit.
 

Todd,
You might find that if you have the operator set the "inertia factor" to about 0.6 to 0.7 it might be easier to compare numbers to those that have other dynos such as SuperFlow models. Might be interesting for you to ask what they normally use.;)



The dyno owners have that option even if they have SF electronics installed (but it doesn't look like it in the photos).


Always fun to see your work tested on a dyno. Makes it more fun when you put the engine in the car for runs down the track.


Good Luck to you and Autumn.:D


Regards,
HB2:)
Dissident

Re: H-I-J '76 Nova re-fit.
 

Pretty excited to get to tuning, I have some experience as a dyno operator (I used to own a chassis dyno) and I try not to get to caught up in the numbers game, I just want to see gains and losses via tuning and hopefully the cars performance will reflect.

Re: H-I-J '76 Nova re-fit.
 

Got in a little work today, heat cycling piston coating, breaking in cam, re-checking everything under the valve covers etc. Back at it for a few hours tomorrow.
https://i.imgur.com/RirMiJSh.jpg
https://www.youtube.com/watch?v=A8MThE33kno

Re: H-I-J '76 Nova re-fit.
 

Todd,
Seeing the type of dyno equipment you are testing on makes a suggestion possible.............Dyno tach will be accurate SO,

You can take the tachometer off the car and test it against the dyno instrumentation. That will give you some data that is worthwhile on the track. Even the best electronic tachometers are +/- 5% full scale devices. Do the math on whatever the full scale value is.....can make quite a difference on the track.:cool:
Not many folks know that little fact and they assume the high dollar tach they bought is spot on....don't guess, test.:rolleyes:



Have a great time testing!:D


Regards,
HB2:)
Dissident

Re: H-I-J '76 Nova re-fit.
 

A data acquisition system would be your best asset.

Re: H-I-J '76 Nova re-fit.
 

A Tach can easily be tested in the car. Use an MSD tester that allows you to fire the ignition without the engine running. I’ve had tachs that I knew were off and the MSD tester confirmed it. One was off 200 rpm at lower rpms and 400 or more at higher rpms. That was not the first one I’ve had that was off. The tester can test anything rpm related and the ignition itself. I keep it in my trailer toolbox....I don’t recall the part number. Easy to find though. I also have a grid controller in my car and it records all runs for time and rpm ....another good item but not as good as a data recorder ...

Re: H-I-J '76 Nova re-fit.
 

Great advice.

Re: H-I-J '76 Nova re-fit.
 

Absolutely Glenn, got one, I just need to get it all installed.

Re: H-I-J '76 Nova re-fit.
 

Is this it Rich?
https://www.holley.com/products/tool...ers/parts/8998