he probably forgot that the 351w has a different firing order than a 5.0 HO


i hope he didnt install the HO cam in there.... that would be all kinds of bad

 

yep, its up at the shop now

they called this morning, said first thing they found was intake valves hitting pistons.
oops, so much for my piston to valve clearance checking skills............

They're fly cutting the pistons and going to double check everything and re-asymble.

Still hoping to have race shop break in and dyno the engine on their engine dyno.
Havent found a carb intake to borrow for it yet though

Dropped off the empty car at the paint shop today to get hood fitted and painted too.


uh, no it doesnt, HO 5.0 has the same firing pattern as 351W, non HO 5.0 does not

 

beat me to it

 

I stand corrected... ty

There are three kinds of 302s made from 1982-2001.

* 5.0L HO This engine was used in 1983-1995 Mustangs, Mark VII Lincolns, and some T-birds and Cougars. All Explorer 5.0L engines are 5.0L HO engines as well. They use the 351W firing order, 1-3-7-2-6-5-4-8. Except for the 1983-84 Mustangs, all of these engines are roller cam equipped. They use a reverse rotation water pump and front cover. The 1994-5 Mustang and all Explorers use a unique front cover and water pump.
* 5.0L Full Size Car This engine was used in 1982-1990 Crown Victoria and Grand Marquis. They use the 289-302 firing order, 1-5-4-2-6-3-7-8. Most of these cars are not roller cam equipped, however sometime in the early 1990s they started using roller cams but retained the 302 firing order. They use a standard (clockwise) rotation water pump and front cover.
* 5.0L Truck (except Explorer) These engines are similar to the Full Size Car engines, except they use different intake manifolds and camshaft profiles. They also use the 289-302 firing order, 1-5-4-2-6-3-7-8. They also began using roller cams sometime in the early 1990s. They use a reverse rotation water pump and front cover.