68 460 vs 78 460

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68 460 vs 78 460

Post  bigblockfox83 on March 26th 2013, 9:30 pm

hello everyone, i have a very mild low compression 460 in my 83 gt mustang. it has 8-1 stock compression, a 218/.495 lift cam, a performer intake, 600 double pump holley, custom headers and dual exhaust. this combo runs very well, has a ton of torque and is reliable but i recently purchased a 68 lincoln 460 which is 10.5-1 and totally stock. my question is, has anyone experienced these engines compared to each other in mild form? i guess im wondering how much of an increase in power i would get if i built the older motor similar to the low compression one... any info would be awesome, iv only experienced the smog 460s never the old high comression ones.

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Re: 68 460 vs 78 460

Post  schmitty on March 26th 2013, 9:37 pm

A couple points of compression will be a huge boost to the performance of that engine. I don't know that there were 460's made in 68, it's more than likely a 429, with small chamber C8VE heads. Those heads on a stock bottom end 460 will raise the compression. You will need to switch the whole valvetrain with it, or upgrade to an adjustable roller rocker setup with guideplates and Chrome Moly hardened pushrods.
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Re: 68 460 vs 78 460

Post  bigblockfox83 on March 26th 2013, 9:42 pm

ok. maybe its a 69 460. it was out of a 69 lincoln and even still has the lincoln continental air filter top. the numbers on the block and heads are c8ve. it has screw in studs and the old school rail rockers.

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Re: 68 460 vs 78 460

Post  IDT-572 on March 26th 2013, 11:18 pm

I just tore down an old engine today. c9 block with c9 heads factory original out of a Lincoln, it had a small dish piston with 460 cast on the side of them.

Looked like brand new except where a little water had gotten on top of a couple of pistons. Still had FOMOCO bearings in it.

It's going to be built and going in a 3/4 Jeep Pick up truck along with a N.P. 205 Tcase and a C6 transmission. Truck pulling in the farm stock class.................

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