Why are stock 427t heads not meant to work?
Why are stock 427t heads not meant to work?
The 0.400″ taller decks put the heads higher on the block, so that headers may not fit the car/truck like they are supposed to. Speaking of heads, the stock 427T heads were meant to make power up to about 3500 rpm’s, so they will not work in a performance application.
How tall is a 366t / 427t industrial engine?
The factory pump for a tall deck industrial engine (366T/427T or 366 cubic inch tall deck/427 cubic inch tall deck) is approximately 6-3/8″ from block to pulley mount surface. Long nose is approximately 7-5/8″ from block to pulley mount surface. Short nose is 5-7/8″ from block to pulley mount surface.
What kind of cylinder heads do tall deck engines use?
The cylinder heads are not all actually specific to the tall deck engines. They mostly utilize the same factory castings as other big blocks, obviously with some variation over time. The valves ARE different though. The tall deck engines use sodium filled valve stems for better cooling.
What are the gaskets on a 1972 366t engine?
As can be seen below, this set of factory heads off of a 1972 366T engine is a standard oval port casting. Visual indication of standard head use: as can be seen below, the head gaskets on this factory 366 cubic inch engine used standard size gaskets.
What is the casting number on a GM 427?
The Casting Number on the block is 473478 I’m wondering what the Stock Horsepower and Torque ratings are for the these Tall Deck Truck engines. I can’t seem to find any information anywhere else.
Can a 427 tall deck be used in a race engine?
Not much use for the 427 crank ‘n’ rods in a “real” race engine, though. The tall deck blocks have 4 bolt mains. The cranks are steel and nitrided. The rods are standard length with 3/8″ bolts. Economical and easy way to make a .400 long rod engine.
What kind of truck is a GM 427?
I used to drive the 5 ton truck that the 427 was originally in . it was in a 1962 GMC 5 Ton CabOver. It had very little problem turning 6000 RPM between gears.. (the governor was seized up) LOL My intention for this finished truck is for truck pulling, snowplowing and playing with.
What kind of pistons do I need for a 427 tall deck Stroker?
You can use the same pistons that a normal stroker kit would use (6.135″ rod) if you use a 6.535″ rod, plus this give you a better rod to stroke ratio. Get your crank (4.25″ stroke), pistons and rings for your overbore and the longer rod – that is basically what the factory did with the 8.1 ltr to get the rod to stroke ratio to 1.52.
