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As stated in stock form the LT1/4 is internally balanced in the front and externally in the back via flywheel or flexplate. The "balancer"/pulley is a damper and has no heavy side.
What could go wrong with an unbalanced assembly? Too much stress on the crankshaft?
motor would shake like a dog shi*ting razor blades
a stock LT1 FW has a cast in weight ( and then is drilled in various places to whatever balance specs GM has for the internal balanced motor)
If your FW is neutral (zero) balanced I would think this would be a problem with a stock LT1 rotating assembly. LT1 are rear, externalal balanced motors. Front damper is neutral balanced
So did my first try with some wood, was able to find two thicknesses which were right on the dot
Once the aluminium plates are delivered i can redo it again.
Plate for the engine:
Plate for the gearbox:
Trial fit:
And peeking through the hole of the slave cylinder we can see it fits perfectly.
Once i've got the alu plates ready i can bolt them together, drill and tap the holes for fixing the gearboxplate to the engine plate and finally cut it down to size.
Did the first moves today to fit the V8 in the car. Removed the wings and cut a center section so i can just feed the engine in a straight line.
Without a modified gearbox tunnel the engine and gearbox were not going to fit due to hitting the steering column and steering arm. So i separated them, put the gearbox under the car and was going to hover the engine in the engine bay. This allowed me to take different measurements for later puzzling on the drawing board.
Think i'll have to research the interweb on how other did this engineswap, when i put a wooden slat between the gearbox and diff it's almost dead on - this means that the gearbox can't be positioned much higher. When in fact it really has to because the adapterplate is now the lowest point of the car AND the steering column is still in the way, like A LOT.
motor would shake like a dog shi*ting razor blades
a stock LT1 FW has a cast in weight ( and then is drilled in various places to whatever balance specs GM has for the internal balanced motor)
If your FW is neutral (zero) balanced I would think this would be a problem with a stock LT1 rotating assembly. LT1 are rear, externalal balanced motors. Front damper is neutral balanced
pic of stock LT1 FW
Nobody seemed to catch that he was keeping the stock flexplate (with counter weight) in addition to the zero balanced flywheel. He'll be fine.
I was able to find the topic on here of someone who already did this swap back in 2008, thankfully the pictures were still visible. There i could see exactly what the modifications were going to be:
- cut the front subframe to gain height
- lower the steering column
- make a custom oilpan to clear everything
08-20-2018, 02:42 PM
