bad vibration

[Irish_Alley]

Lot of reading there,,simple question here, whats overall best and safest for these older type engines, regular or super?

the way i understand it you base your fuel type off your compression ratio.
rule of thumb we use for this old cast heads are
87 is good for 9.1:1
91 is good for 10.5:1
93 is good for 11.5:1

but theres no real rule of thumb cause it depends on a few aspects and intake temps play another role and you will get multiple answers for this. but if you put 91 in something that doesnt need 91 you wont get more power just a bigger fuel bill. if you put 87 into something that needs 91 you will cause pinging and the engine to overheat. if you put 87 into a newer car with automatic timing and 91 is required the ecm will retard the timing for you to protect your engine but at the same time robbing you of power cause the more timing you can add the more power you can put out (in most cases)

[Captain Swampy]

Some pictures at your earliest convenience please. I can't be the only one dying to see this masterpiece.

[Captain Swampy]

By the way, how do you guys put the full size pictures in? I'd like to be able to do that in my thread so you don't have to click on the picture. I have a video of Brooke playing in the snow I'd love to share also.

[Captain Swampy]

Thread hi-jacked! 

[bd]

The topic, Alcohol enriched fuels and E85, has been moved to its own thread.

[Greybeard]

Awesome! 

[philo_beddoe]

I'll get more pics and a video later of the brand new crate 350. That dang snorkel is in the way.  Oh, and i didnt accidently paint the upper rad hose, there was a stupid sticker there that wouldnt peel off.

[roundhouse]

Nice.    Flip the lid on the air filter so you can hear the four barrel...


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[philo_beddoe]

Lol, a friend told me the same thing, but then it wont have the factory stock look.

[philo_beddoe]

[zieg85]

Nice.    Flip the lid on the air filter so you can hear the four barrel...


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I use to use 3/8" fuel line cut to length and electrical taped the circumference of the air filter and used that as a gasket of sorts.  That way it was barely noticeable and had the same effect.  You got the roar but kept the stock appearance.     

[LTZ C20]

Nice.    Flip the lid on the air filter so you can hear the four barrel...


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This was cool from the age of 16 to 21. It serves no purpose other than to make a cool sound and look ridiculous. Please don't do this, your truck is to nice to do something so silly.

[philo_beddoe]

Nice.    Flip the lid on the air filter so you can hear the four barrel...


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This was cool from the age of 16 to 21. It serves no purpose other than to make a cool sound and look ridiculous. Please don't do this, your truck is to nice to do something so silly.

Well stated!!

[Greybeard]

But there is no harm at all in dumping the stock intake tract completely and putting an air system on there that will up your MPG AND allow the sound out. I guess I am not purist when it comes to performance. I much prefer the look of the reusable 6" tall filters between quality chrome plates. My personal preference is K&N but there are many others that do just as good and possibly better. And filter air better to boot. Of course there are the concerns of under hood heat which is a valid concern, however, that might be putting to fine a point on a low-po stock configuration engine. However, sound is of secondary importance anyway. If the carb is set up and sized right (and I am certain it is) there would be very few occasions to get the secondaries to open under normal driving. YMMV

[LTZ C20]

A washable k&n type filter between to chrome pie plates would do more harm than good on his vehicle specifically and it would not appear factory either like he wants. I did the pie plates with washable filter and then I put the stock housing back on and put a Delco paper filter in it and the air quality going to the engine is much better. Washable filters don't filter as good as the paper units do. This is entirely a topic for a separate post but the type of air induction is not suited for what he wants or requires. And remember, the pie plates help with sound but not mpg's. The factory unit draws cooler air from the front, cooler air helps with better mpg's and power and efficiency. Drawing air from all around the engine where it's over 200° is actually counter productive. I had issues with cold drive ability and choke operation, all caused by pie plate air intakes. GM didn't spend millions on R & D to be outsmarted by an over priced 30 dollar washable air filter and 2 pie plates from grandma's kitchen. Philo, your current setup is proper, functional and reliable. Enjoy your truck.