Harmon

I inherited a 455 engine from a friend who got it from another guy that told him it was a 68/69 Olds 455 out of a Hurst Olds.

Is there any way to determine this?

442Harv

What heads are on it? If Ds then probably was. Could be C if it was AC car

Harmon

They are C heads

Jamesbo

All 69 H/O's w/ or w/o AC have D heads

Harmon

He told me the heads are off a 400 Olds....did c heads come on that?
There is no way to tell from the block?

Jamesbo

Yes,

C heads came on 69 442 w/ 400 cubic inch motor. The D heads came on the 442 400 cubic inch W-30 cars and the 69 H/O with 455 cubic inch motor.

Cameo White

C heads did come on the 68 H/O with AC. I think they were on the big cars in 68 and 69 as well.

allyolds68

I would imagine if you had the numbers off the vin pad on the block someone could check them against the 68 or 69 H/O registry. I'm thinking it would be a long shot though. You might make someone pretty happy if you had their matching numbers engine though

Harmon

So I need the number on the block which is several numbers and then check it with a registry of hurst olds cars vim numbers? Is it possible to look up the hurst olds registry numbers?

hurst68olds

Post the partial VIN number stamped below the driver's side head, behind where the power steering pump would mount.

38M614186 = 3-Olds 8-1968 M-Lansing 6-Toronado 14,186-unit# (late Feb. '68 production)

Harmon

38M144104 is the number

hurst68olds

38M144104

3-Oldsmobile 8-1968 M-Lansing 1-passenger car (non-Toronado) 44104-unit#

Too early for a '68 H/O.

blueRAYwhale

look for a series of numbers(about 3/8" high), stamped on the oil fill tube, towards the top. the first #(i think there is eight altogether), indicates engine build year. it should read 8 or 9 XXXX and so on. may or may not help you if the tubes been replaced. sometimes you have to clean-off the tube and the #'s may be facing towards the intake mainifold.