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Old 05-07-2014, 12:31 AM   #61
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Re: Chevy 366 hop up

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Originally Posted by Kirbystud
I have a 366 in my bus and it will run all day long at 3200 to 3500 RPMs at 65 mph. When going up a hill it will drop 5 mph or so....I have installed new daul exhaust 2 1/2 to the back tires. New carb I went with a Q Jet.... I would make sure all is work on your engine before changing out stuff......

If I can get my 366 up to where you are, I'd be a happy camper. I just bought my bus. Its been pretty dormant for the last 7 years. Gonna do a tune-up fix the leaks and hope for the best.
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Old 05-07-2014, 10:21 AM   #62
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Re: Chevy 366 hop up

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Originally Posted by opus
2 engines I was fond of, the 366 and the Ford 377. You like the 454 better than the 366?

Yup it has more power the power to weight ratio is much better than the bus was, I regret not keeping the 366 engine and the allison trans but I had no use for it at the time so let it go to the crusher, I could have kept the engine trans for 500 bux, would have been great for a 1 ton pickup truck hauler project. My current RV weighs about 3-5k less than the bus did.
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Old 05-07-2014, 10:34 AM   #63
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Re: Chevy 366 hop up

I was traffic manager at Ryder Truck Rental in the early 80's. I ended driving quite a few and boy did we drive them. They held up well and scooted right along. Then again, we're talking an empty 24' moving truck. First thing we'd do is unplug the gov. and go!
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Old 07-14-2014, 11:08 PM   #64
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Re: Chevy 366 hop up

I read most of the posts on here conserning trying to get performance out of the 366. I have one in the bus I have now and the only thing I can add is this. Its a great engine for what it was designed for to be a work horse but it ain't no race horse and if you try and make it a race horse your beating a dead horse. It will run all day long or as long as you drive it, its like a ox slow but reliable. I'm leaning toward a diesel perhaps a Cummings or a 2 stroke D-roit. And thats because I've spent a little time with those two brands.But if your trying to pass every thing on the interstate you ain't gonna do sitting behind a 366. Thats all I gotta say about it.
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Old 07-17-2014, 12:38 PM   #65
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Re: Chevy 366 hop up

I don't think anyone is going to build a race horse out of it…. as you said it won't happen.

For me I wam just wanting it to breathe a little I think a header and duals on it would do the trick.

I am all about tried and true engines so Im ok with it.

I will have a diesel in my next bus for sure.
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Old 07-17-2014, 01:04 PM   #66
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Re: Chevy 366 hop up

Headers are hardly worth anything shy of full throttle racing applications. Run a good diameter dual and I bet you'll find you do better.
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Old 07-17-2014, 01:43 PM   #67
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Re: Chevy 366 hop up

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Originally Posted by opus
Headers are hardly worth anything shy of full throttle racing applications. Run a good diameter dual and I bet you'll find you do better.

My 1987 366 came with GM factory headers installed.

I would NEVER install headers on ANY engine they are just not worth the gains.
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Old 07-18-2014, 12:31 AM   #68
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Re: Chevy 366 hop up

Hoser…..

Explain. All the years I hot rodded and built motors…. I would have to disagree.
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Old 07-18-2014, 07:58 AM   #69
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Re: Chevy 366 hop up

headers are great if they are of good quality, fit and are tuned correctly. most exhaust systems are not! i would think some good gains to be had with correct size/length headers and an x pipe for that midrange motor (366).
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Old 07-18-2014, 10:11 AM   #70
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Re: Chevy 366 hop up

Its real simple I had a 76 Blazer had about 80k miles of documented use and MPG records buddy called and said he had a FREE set of aluminum coated headers for me a guy had bought them for his Blazer and never installed them at the time I needed a new exhaust so since the price was right took the FREE headers, installed they didnt fit for **** hit the starter had to remove the starter heat up all the tubes with a torch then put a 4x4 between the block and header bend it out to clear the header, install heat shields to prevent it from cooking the starter, then took it to custom muffler shop to have duals in stalled, the next 80k miles the MPG didnt change, no gains, just more noise and problems trying to keep spark plug wires from burning up dumbest thing I ever did was remove the factory single exhaust and manifolds and install FREE headers!

I have seen dozens of other owners with the same thing.

Psychologically their is a LOT OF GAINS problem is they are NEVER backed up by anything scientific unless your the MFG supplying the dyno results for the magazine your now advertising in thats writing a favorable review for you since your now paying him for the favorable review.

Do headers work YES in specific applications they can help go they work on every application NO they dont.

Save all your BS unless you want to come back with some technical documents like some SAE documents then I would be willing to listen and or read those documents, telling me all your lame BS engine building 150 years of drag racing crapola bla bla bla you can save I have heard it all before not one of you have ever drag races with factory manifolds so have no data to back up your seat of the pants psychological gains you brag about.

Would I see more power if I was going to install headers on my engine then run it 2000 RPM more than I normally do YES probably but this is not real world gains when I go back to the normal RPMs I gained nothing, so YES your right 'headers create more power' but are meaningless in the real world.

Same goes with motorcycles and ATVs the jedi mind tricks work on them also, cant count the thousands of dollars I have seen people spend on those exhaust that in real life give no measurable gains, those fools actually think the factory engineers left some undiscovered performance gains behind for some guy to discover then sell to you haha.

Anxiously waiting on SAE documents or equivalent to read.... Spare me all the articles written by people who also sell advertisements and call the internal combustion engine a "motor" haha = hacks and quacks call them a motor too stupid to realize the correct terminology ...
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