Ford Truck Enthusiasts Forums

Ford Truck Enthusiasts Forums (https://www.ford-trucks.com/forums/index.php)
-   Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) (https://www.ford-trucks.com/forums/forum55/)
-   -   I gambled and maybe I (https://www.ford-trucks.com/forums/1503670-i-gambled-and-maybe-i.html)

baddad457 12-30-2018 09:38 AM


Originally Posted by schoo (Post 18388647)
Some body on here said I will need a different distributor drive gear if I change cams(comp cam#35-512-8)is this true and if so have you got a part#

Only if you go from a flat tappet to a roller cam (or vice-versa) The cam's materials are different (steel for the roller, cast iron for flat tappet)

schoo 12-30-2018 11:56 AM


Originally Posted by baddad457 (Post 18388744)
Only if you go from a flat tappet to a roller cam (or vice-versa) The cam's materials are different (steel for the roller, cast iron for flat tappet)

ok Iím going to roller cam. so steel are they all the same I believe I also will change the firing order

baddad457 12-30-2018 12:43 PM

As far as I know all roller cams are steel.

Scndsin 12-30-2018 06:19 PM

Itz been a while so I think this was covered, but your 89 block is "roller capable", it will need a "spider" & "dog bones" to go with a roller cam.

Most all hi-perf small block Ford cams usually have the notation in their specs "must use 351 firing order".

You will need a steel distributor gear. I'd also suggest you take the time to replace the PIP sensor in the distributor since you have to press off the gear.

Use a Motorcraft part.

Last chance 53 12-31-2018 10:54 AM

I am running a comp cam in my 331 and was told by comp that all the cam part numbers that end in -8 are iron based and a steel gear was not needed. Maybe want to double check before you change to steel

schoo 12-31-2018 01:25 PM


Originally Posted by Last chance 53 (Post 18390778)
I am running a comp cam in my 331 and was told by comp that all the cam part numbers that end in -8 are iron based and a steel gear was not needed. Maybe want to double check before you change to steel

thanks guys info keeps me hopping summits got a steel one for $29.99 and also sell comps plastic one for $💯 so I have a good range to choose

xlt4wd90 01-01-2019 01:01 PM

The -8 are rollers, so are they steel?

Last chance 53 01-01-2019 02:17 PM

The comp cams are a ductile lron core, not billet steel. They use a heat treatment on the lobes to control wear on them.

schoo 01-01-2019 04:07 PM


https://cimg8.ibsrv.net/gimg/www.for...81d8c84a15.jpg

Originally Posted by Last chance 53 (Post 18392936)
The comp cams are a ductile lron core, not billet steel. They use a heat treatment on the lobes to control wear on them.

ok what drive gear am I going to use? I sent an email to comp asking yesterday so donít expect to here from them soon

Last chance 53 01-01-2019 05:17 PM

The tech dept. at comp cams told me I could use the stock iron gear.

Scndsin 01-01-2019 05:42 PM

Use a steel gear.

This would be fine for your application if you can't a Motorcraft part.

https://www.summitracing.com/parts/sum-850460/overview/make/ford

https://www.summitracing.com/parts/sum-850461/overview/make/ford


Measure the shaft.

(Edit) larger shaft probably for 351/5.8, my bad.

schoo 01-01-2019 05:45 PM


Originally Posted by Last chance 53 (Post 18393167)
The tech dept. at comp cams told me I could use the stock iron gear.

I just found a video by comp cams on summit tech support (Iím old so canít link it)but it gives a chart and a video shows how to see the difference in cam material and a chart shows drive gear chooses Iím going to use steel

schoo 01-01-2019 10:15 PM


Originally Posted by Scndsin (Post 18393201)
Use a steel gear.

This would be fine for your application if you can't a Motorcraft part.

https://www.summitracing.com/parts/sum-850460/overview/make/ford

https://www.summitracing.com/parts/sum-850461/overview/make/ford


Measure the shaft.

(Edit) larger shaft probably for 351/5.8, my bad.

yes I checked it I have the small shaft
Calling ford tomorrow

schoo 01-02-2019 11:27 AM

Mission creep
 
Hope this isnít a bad sign the drive gear for the distributor that I have looks to be a steel/plastic stock drive gear I need to change out I donít want to change the hole distributor just the gear it has a roll pin and I believe itís a press on gear. The machine shop I use doesnít do this so looking around. The ford dealer says it an obsolete part and canít even get me a part number. A new year project road block?

Scndsin 01-02-2019 01:04 PM

Wow. That's pretty lame. It's not hard to drive out the roll pin. The physical effort to press off the gear is minimal.

This is the first hit I got on Google. I'm sure there's more:



All times are GMT -5. The time now is 08:37 PM.


© 2019 MH Sub I, LLC dba Internet Brands