240 to 300
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From: richmond chesterfield
240 to 300
what does it take to convert a 240 l6 into a 300 please email me at miester@comcast.net if u know
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From: Keweenaw Bay, MI
240 to 300
Same block, different stroke. All you need to do is put the pistons, rods and crankshaft from a 300 in the 240 block and you got it. You will actually have a hotter version because the 240 head has a smaller combustion chamber than the 300. This will bring your compression ratio up a bit.
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From: richmond chesterfield
240 to 300
y would u need to replace the pistons i mean correct me if im wrong but isnt it the bore not the stroke and how much higher compression if its to high it will ping like crazy
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From: Dryden, ON, Canada
240 to 300
You have to use the 300 pistons, the pin height is different(useless fact of the day: 240's use 302 pistons.) As for pushrods, unless you plane the head, stock is fine(last I checked, 240 and 300 of the same year were the same part #)
The block is the same, bore is the same(4" at standard size) stroke is different, 240 is 3.18", 300 is 3.98". The 240 head has around a 65 CC chamber, while most carby 300 heads have around a 75 cc chamber, early ones were 68 CC or so IIRC.
Evan
The block is the same, bore is the same(4" at standard size) stroke is different, 240 is 3.18", 300 is 3.98". The 240 head has around a 65 CC chamber, while most carby 300 heads have around a 75 cc chamber, early ones were 68 CC or so IIRC.
Evan
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From: Dryden, ON, Canada
240 to 300
It depends on what pistons you use, on your average 300, a 10 CC decrease in the combustion chamber will bring you up to around 9:1, maybe a little more, maybe less, depending on the engine itself, Personally, I've run as high as 9.5:1 on my 300 with 87 octane gas and no pinging....
Evan
Evan