Thread: 410 merc

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need info on a 410 merc..thanks

like what?
http://www.fordfe.info/

it's just a 390 block, 428 crank, and 360 truck pistons. (I guess you could call them 410 pistons). I've found them when tearing down 70's era f-series.

how can you tell a 390 from a 410 by just looking

remove #1 and #4 sparkplug.
Roll engine over to TDC #1.
get stick.
put stick in #1 hole
mark it
Put stick in #4 hole
mark it

Get out calipers and measure between marks. That number is your stroke.

Best of luck,
Drew

410 and 428 are externally balanced, 390 and the rest aren't. If there's a big chunk of iron welded to the ring gear/flex plate, it's a 410 (0r 428). Or a 330/391 truck engine, they are weighted too, but there are other obvious differences in them.