upgrades?????

wlay1980 · 06-23-2008, 05:58 AM

So I am going to be rebuilding my supra in a few months and I want to know if it is possible to swap in the 7m crank into my 5m block. I want to stroke the engine and bore it over. I am looking at giving it some extra power without turbo. If the 7m will not work then is there anything I can do to give it more torque and increase the CID in addition to boreing and cam profileing.

Supra Goddess · 06-30-2008, 04:08 PM

What year 5M block do you have?

You can only install the 7M crankshaft into a later model 5M block (85/86) because of the #1 main (later blocks have a wider #1 main, early blocks are thinner and the 7M crank won't work)

You'll also need to use the 7MGE/GTE connecting rods and oil pump driveshaft.

That would effectively make it a 6MGE. If you use the domed style pistons, oversized .030" over with intake and exhaust, you'll be looking at around 170hp and 180ft/lbs to the wheels.

You can get the pistons here:
RabidChimp.com - Second Generation Supra Engine Repair and Mainenance

I would look into getting the .030" piston rings elsewhere, as RC only has the chrome ones available and they are a ridiculous price right now. Or you could just go .020" over, bc he has those style rings for $96.

Check supramania.com for a crank, rods & op driveshaft

06-30-2008, 04:08 PM	#2
Supra Goddess Intake Join Date: Feb 2005 Location: Lakewood, WA Posts: 38	What year 5M block do you have? You can only install the 7M crankshaft into a later model 5M block (85/86) because of the #1 main (later blocks have a wider #1 main, early blocks are thinner and the 7M crank won't work) You'll also need to use the 7MGE/GTE connecting rods and oil pump driveshaft. That would effectively make it a 6MGE. If you use the domed style pistons, oversized .030" over with intake and exhaust, you'll be looking at around 170hp and 180ft/lbs to the wheels. You can get the pistons here: RabidChimp.com - Second Generation Supra Engine Repair and Mainenance I would look into getting the .030" piston rings elsewhere, as RC only has the chrome ones available and they are a ridiculous price right now. Or you could just go .020" over, bc he has those style rings for $96. Check supramania.com for a crank, rods & op driveshaft __________________

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06-23-2008, 05:58 AM	#1
wlay1980 Stock Join Date: Jun 2008 Location: corvallis, oregon Posts: 3	upgrades????? So I am going to be rebuilding my supra in a few months and I want to know if it is possible to swap in the 7m crank into my 5m block. I want to stroke the engine and bore it over. I am looking at giving it some extra power without turbo. If the 7m will not work then is there anything I can do to give it more torque and increase the CID in addition to boreing and cam profileing.