Engine Idenification

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May 11, 2001 | 06:19 PM

projectf100

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Engine Idenification

I just bought a '76 F100 and the guy I bought if from said it was a 390. The vin said it should be a 360. I checked the block number and that is c6me-a which comes up as a 428-4v, Police Interceptor

Any ideas on how to tell for sure!

Thanks

May 11, 2001 | 09:34 PM

FE427TP

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From: yes

Engine Idenification

take a small wooden dowel, pull a spark plug, run the dowel as straight down the bore as you can until you hit the piston, with a big wrench or rachet turn the engine over manually and mark the dowel at the highest and lowest point, this will give you the stroke, 3 1/2" is a 352/360 3 3/4" is a 390 and 4" is a 410/428

May 12, 2001 | 03:21 PM

projectf100

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Engine Idenification

It appears it is a 390. The stroke was 3.75, thanks for your help.

May 16, 2001 | 02:24 PM

fordification

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From: Calgary

Engine Idenification

That's a great idea! Wish I thought of that when I went to look at this motor a week ago. Never did find out what it was for sure. Only you have to make sure you don't move the dowel or rod on top of the piston, because you get an incorrect measurement. Also you have to make sure that whatever you use doesn't connect with the top of the cylinder head at TDC.

May 20, 2001 | 01:40 AM

onebad40willys

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Engine Idenification

the best way to identify the 428/410 or any fe using their crank is the external wieght on the crank behind the balencer.

May 23, 2001 | 08:55 AM

fordification

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From: Calgary

Engine Idenification

>the best way to identify the
>428/410 or any fe using
>their crank is the external
>wieght on the crank behind
>the balencer.

I heard that the only crankshaft weight was applied to the flywheel on the 410/428's, and only the 428SCJ had the counterweight like weight on the front behind the balancer.

~'71 F-100 Sport Custom Reg.Cab
-390FE w/Edelbrock Performer RPM intake, 780cfm Holley, ported & polished cylinder heads,
Crane Cam (0.548"I,0.580"E), 10.5:1 CR, Black Jack headers, true double roller timing chain, and high volume oil pump
-C6 transmision w/B&M 2600rpm stall
-9" Ford Rearend w/4.10 Richmond Gears & 31 spline axles
-215/65/r15 Yokohama's for the front & 28"x13.5"x15" Mickey Thompson ET Street slicks for the back
Best 1/4 mile time @ 3375ft altitude 14.69secs @ 92mph