Head/piston question

I am in the process of building a 460 EFI engine for my 1986 F350. I am using the D9TE block, appropriate crank, a mild torque cam, F3TE heads, stock late (F4TZ) exhaust manifolds and retaining my stock non-catalyst exhaust system. My question is relating to pistons. Can I use the early 460 pistons, i.e. pre 1972 pistons with this without a problem?

The truck is a crew cab dually with a 3.55:1 gear. I will be running a modified WAY1 ECM which is an MAF, SEFI system and can control the E4OD transmission I am installing. I did leave the wiring for the knock sensor in the harness so I can use one if I need to.

yes they can be used.

Ok, that's what I thought. Thanks. Now all I have to do is find someone who still sells the old pistons. Everybody I checked with tries to push the 72-86 pistons, the .240" dish which gives 8.0:1 cr.

KB has hypers in different configurations and Speed Pro / FM Sells a Hyper FT and various dishes too. They work fine for mild Street builds

85lebaront2 wrote: Now all I have to do is find someone who still sells the old pistons. Everybody I checked with tries to push the 72-86 pistons, the .240" dish which gives 8.0:1 cr.

Which old pistons do you want? The old 460 FI pistons? Those are readily available, both in the 88-92 (smaller) dish and the 93-96 (smaller yet) dish. How much compression ratio are you shooting for?

Paul

I am looking to get between 9-9.5:1. I built on a number of years ago using the 68-71 pistons and D3VE heads and had previously built one using D0VE heads on a 74 short block which was supossedly around 9.7:1.

85lebaront2 wrote:I am looking to get between 9-9.5:1.

If you use the 1988-1991 applicable 460 FI pistons, deck the block to 10.300, and reinstall your F3TE heads, you will be in that very ballpark.

Paul