366 tall deck motor questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1Ton · 03-26-2007, 11:34 PM

I dont know anything about the tall deck motors. I know a guy with one for sale and am looking for a motor for my K30. What are the pros and cons to these motors?

Pyrotechnic · 03-27-2007, 02:48 AM

This engine original came in dump trucks, school busses and other medium duty applications. There are built for durability and low end torque and are unwilling to rev much past 4000RPM. The pistons are taller to accommodate an extra ring, thus the tall deck height. They are very tough motors and will last a long time and have lots of stump pulling power, but thats about it. The heads on these motors are not great for making upper RPM power either.

For an engine swap, I would not pursue it just because you could probably do better with a well built 350, 383, 400 small block or even just a standard 396, 454, etc. big block.

Bishops Trucks · 03-27-2007, 03:27 AM

I have a 427 Talldeck. This company sells kits for talldeck motors http://www.speedomotive.com/ps-78-7-...roker-kit.aspx . I am planning to do the 472 or 525 stroker for my Yenko Project Truck. You can get alot of power out of these motors when assembled right.

1Ton · 03-27-2007, 08:23 AM

Thanks for the help guys.

03-26-2007, 11:34 PM	#1
1Ton Registered User Join Date: Nov 2004 Location: Jamestown NY Posts: 731	366 tall deck motor questions I dont know anything about the tall deck motors. I know a guy with one for sale and am looking for a motor for my K30. What are the pros and cons to these motors? __________________ Support your local search and rescue team.... GET LOST! Originally Posted by DURRTY if some is good more is better too much ought to be enough........

03-27-2007, 02:48 AM	#2
Pyrotechnic Registered User Join Date: Feb 2007 Location: Austin, TX Posts: 3,930	Re: 366 tall deck motor questions This engine original came in dump trucks, school busses and other medium duty applications. There are built for durability and low end torque and are unwilling to rev much past 4000RPM. The pistons are taller to accommodate an extra ring, thus the tall deck height. They are very tough motors and will last a long time and have lots of stump pulling power, but thats about it. The heads on these motors are not great for making upper RPM power either. For an engine swap, I would not pursue it just because you could probably do better with a well built 350, 383, 400 small block or even just a standard 396, 454, etc. big block.

03-27-2007, 03:27 AM	#3
Bishops Trucks KEEP ON TRUCKIN' Join Date: Jun 2005 Location: Sterling, Va. Posts: 5,730	Re: 366 tall deck motor questions I have a 427 Talldeck. This company sells kits for talldeck motors http://www.speedomotive.com/ps-78-7-...roker-kit.aspx . I am planning to do the 472 or 525 stroker for my Yenko Project Truck. You can get alot of power out of these motors when assembled right. __________________ JIM '97 GMC Sierra K1500 '95 Chevy Silverado C1500 '71 Cheyenne Z71 / LT1 & 4-Speed SWB K/10 Father/Son Project http://www.youtube.com/watch?v=4l689JKXPnA http://67-72chevytrucks.com/vboard/payments.php "LIVIN' FREE FOREVER"

03-27-2007, 08:23 AM	#4
1Ton Registered User Join Date: Nov 2004 Location: Jamestown NY Posts: 731	Re: 366 tall deck motor questions Thanks for the help guys. __________________ Support your local search and rescue team.... GET LOST! Originally Posted by DURRTY if some is good more is better too much ought to be enough........



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