Engine without a casting number identification

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Apr 14, 2004 | 05:07 PM

scotauto

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Engine without a casting number identification

I'VE RECENTLY AQUIRRED A RANCHERO FROM 1973 AND WAS WONDERING IF THERE ARE ANY WAYS TO IDENTIFY THE ENGINE WITHOUT CHECKING THE STROKE AND BORE ETC. i CANNOT FIND ANY CASTING NUMBER ON THE BLOCK (ABOVE THE STARTER) .cAN IT BE SEEN WITH THE STARTER AND EXHAUST MANIFOLDS IN PLACE? i HAVE NOTED THAT THERE IS AN INTAKE MANIFOLD FOR A 302(I THINK). dOES THIS FIT ON A 351 ALSO? i'VE ALSO MATCHED BOUGHT SOME SPARK PLUGS FOR THE ENGINE AND MY SUPPLIER ASSURED ME THAT IF IT HAD THE "LARGE SIZE" PLUGS IT WAS DEFINETELY NOT A 302, BUT PROBABLY A 351. hOWEVER THE SMALL TELL TALE SIGNS i CAN SEE LEAD ME TO BELIEVE IT IS A 302. i WOULD LIKE TO BE PROVED WRONG AND FIND IT IS SOMETHING BIGGER!!

Apr 14, 2004 | 10:42 PM

grclark351

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From: chicago burbs

you might have to drop the starter to see the numbers. i think all the W(windsor) style engines used the huge(18mm?) plugs, about the size of a thumb. this would include 289, 302 and 351w. do some investigating of the firing order, this may help single out which engine you have, and/or drop the starter.