302 with 351 firing order???? why?

[ButtaBean]

SO upon finding out my head bolts are 7/16" BUT I have 351 heads that use 1/2". I noticed that in order to run 351 heads there are step washers that are required. I did not have step washers on my set up. I don't know if this was done from the factory or not. what should I do now?

Arp, Summit, Jeg's, and Ford Racing sell the special reducing washers to keep the heads in line. Not sure who else does, but those ones for sure. You can buy them as a kit.

[BayStYAt]

SO upon finding out my head bolts are 7/16" BUT I have 351 heads that use 1/2". I noticed that in order to run 351 heads there are step washers that are required. I did not have step washers on my set up. I don't know if this was done from the factory or not. what should I do now?

Arp, Summit, Jeg's, and Ford Racing sell the special reducing washers to keep the heads in line. Not sure who else does, but those ones for sure. You can buy them as a kit.

thank you. Strange that my engine did not have them from the factory

[DuckRyder]

Are you certain that the holes are 1/2.

[Ranchero50]

Are you certain that the holes are 1/2.

The outside water passages have the extra bolt hole in the intake, something Ford only did on the early 351w's. Per the spacer / shoulder washer I'm not too concerned as long as the bolt head has enough clamping surface to the head casting. I made the last set I used. Took about an hour on the lathe and some 3/4" round stock. Honestly a single 7/16" or even 3/8" (if it fits over the bolt) grade 8 washer should suffice to spread the load. The indexing dowels keep the head from moving so the bolts are only holding the head to the block.

[DuckRyder]

My point is the casting number is only that so we are calling then 351 heads because that’s the use in passenger cars... The castings could have been machined differently for industrial/marine. He needs to check and not assume because they are “351 heads” they have all the attributes of 351 passenger car heads...

[Ranchero50]

Excellent point

[BayStYAt]

Excellent point

I measured the holes and they are 1/2" They also have the L shaped water jackets on each side. They also have the extra bolt hole on next to the L shaped water jacket

[DuckRyder]

https://www.summitracing.com/parts/arp- ... /make/ford

Just checking...

I like the grey, it has a Traco vibe to it.

[BayStYAt]

https://www.summitracing.com/parts/arp- ... /make/ford

Just checking...

I like the grey, it has a Traco vibe to it.

thanks, I wanted a different look. More hot rod. The stock bolt shoulder is 1" wide

[DuckRyder]

Heres the edelbrock bushings that should work too.

https://www.summitracing.com/parts/edl-9680

[BayStYAt]

Heres the edelbrock bushings that should work too.

https://www.summitracing.com/parts/edl-9680

thanks. wow That is very expensive for washers.

[BayStYAt]

ok, machine shop said 20 over pistons and standard bearings. Crank is polished and ready to go.

is there any other options on kits? Is Federal Mougal a good kit?

[BayStYAt]

I was able to build the kit with Clevite bearings, Melling HV pump, Speed Pro Forged pistons, Felpro Gasket kit, freeze plugs, Haven't decided on rings yet.

But its about $50 more for these parts than the Federal Mougal kit. Should I go with the parts I chose over the kit?

[DuckRyder]

Speed Pro is Federal Mogul and so is Fel Pro. Melling makes good pumps but make sure HV is what you want.

If you go to the kit contents tab at summit it will show you what is in their kit, then you can compare it to what you picked if you wish.

[BayStYAt]

Speed Pro is Federal Mogul and so is Fel Pro. Melling makes good pumps but make sure HV is what you want.

If you go to the kit contents tab at summit it will show you what is in their kit, then you can compare it to what you picked if you wish.

thanks, In an effort to clean up my engine bay, is there a benefit to running the PS cooler? Mine is attached to the pump itself and sticks up over the pump. This is not a daily driver. I would like t bypass it if possible