Hercules

zzrodder said:

No, they are the Comp springs that came with the cam, I'll remove the inner dampers for the next attempt - a real PITA but if it works out, it'll be worth it.

Click to expand...

They mention it twice in this bulletin: https://www.compcams.com/pub/media/wysiwyg/CompCams/FlatTappetCamTechBulletin.pdf

zz, Oregon Cams in Washington state. Just a little south of you. They are very busy because of aftermarket shortages caused by Covid and because of aftermarket cam/lifter failures.

Also I've seen oil starvation failures of two almost new engines. The oil pick up screens were plugged. Looked like too much additive/break in moly. Both engines sat for several months after break in Appeared some additive fell out of suspension, laid in the bottom of the pan. When the engines were started the material was drawn into the oil pump pick up and plugged the screen.

I no longer use radical flat tappet cams and stiff springs in street driven engines.

bob w said:

zz, Oregon Cams in Washington state. Just a little south of you. They are very busy because of aftermarket shortages caused by Covid and because of aftermarket cam/lifter failures.

Also I've seen oil starvation failures of two almost new engines. The oil pick up screens were plugged. Looked like too much additive/break in moly. Both engines sat for several months after break in Appeared some additive fell out of suspension, laid in the bottom of the pan. When the engines were started the material was drawn into the oil pump pick up and plugged the screen.

I no longer use radical flat tappet cams and stiff springs in street driven engines.

Click to expand...

Just found their site, they specifically mention performance parts for 390/428 engines. https://www.oregoncamshaft.com/428-FE.html

05snopro440 said:

They mention it twice in this bulletin: https://www.compcams.com/pub/media/wysiwyg/CompCams/FlatTappetCamTechBulletin.pdf

Click to expand...

Yep, I may even put in the stock springs which are likely lighter still..

bob w said:

zz, Oregon Cams in Washington state. Just a little south of you. They are very busy because of aftermarket shortages caused by Covid and because of aftermarket cam/lifter failures.

Click to expand...

Thanks Bob

bob w said:

Also I've seen oil starvation failures of two almost new engines. The oil pick up screens were plugged. Looked like too much additive/break in moly. Both engines sat for several months after break in Appeared some additive fell out of suspension, laid in the bottom of the pan. When the engines were started the material was drawn into the oil pump pick up and plugged the screen.

I no longer use radical flat tappet cams and stiff springs in street driven engines.

Click to expand...

I guess I'm a sucker for punishment...
After this experience, I'm going to use a roller cam in the 496 BBC for the Packard Gasser, need to flog off the flat tappet Big Mutha Thumper cam I already bought for it...

05snopro440 said:

Just found their site, they specifically mention performance parts for 390/428 engines. https://www.oregoncamshaft.com/428-FE.html

Click to expand...

Thanks Colin

Tired of engine woes today, received the Johnny Joints to replace the heim joints on the trailing arms and rear track bar. Lotsa fun creeping around underneath installing them The heims are positive but noisy and harsh. The Johnny Joints are poly bushed, greaseable and rebuildable - pricey but should make for a better ride...

Interesting. Let us know how they work out.

They are higher priced than heim joints but noise transfer with heims is terrible on a street driven ride.

Old Iron said:

They are higher priced than heim joints but noise transfer with heims is terrible on a street driven ride.

Click to expand...

Turn the stereo up, lol!

Still waiting for engine parts, decided to redo the back wall upholstery, the car scene was cool but hidden behind the seats and color didn't match the rest of the interior. Also redid the carpet to replace the previous which was just thrown in to get rolling, short loop style, hand stitched the edge binding to give it a more uptown look...

You're a beast! (That's a compliment)

Do you ever sleep???????????

A happy day, got through the break in process on the new flat tappet cam and lifters. 'Cause it's an FE Ford nobody seems to have another Comp Thumper cam in stock, backordered or made to order, I found a Melling cam on fleabay, 506 lift, adv. 315 duration (224 @ 0.50) similar to the Thumper with a little wider lobe separation, used Comp lifters and installed the stock valve springs with the dampers removed. Slathered the cam, lifter faces, rockers, with moly disulfide grease, filled it with Lucas high ZDDP 10-40 oil. Also dropped the pan to get any debris from the failed cam and put in a new Hi volume Melling oil pump. Crossed my fingers and hit the key!
Actually last time the rear main was peeing out oil, I must have botched the install - redid it too, now no more drips....
Has that hot rod burble now...
Just have to pop the covers and rockers off and put the Comp valve springs back in, that will be fun compared to what just went on.