2F Camshaft (2 Viewers)

[bryce112]

Does this camshaft that we took out of our recent rebuild look decent enough for a regrind (to keep as a spare)? Came out of a 1977 FJ40 2F engine. Thanx in advance.

 

[John Smith]

Definitely keep. Heck, I'd throw that in a 2F and run it as is. I've pulled much worse from running 2Fs.

 

[charliemeyer007]

Um there are lobes that look rough to me. Time to measure its actual spec's. Could be reground maybe, price a new cam.

New cam $300 plus shipping. Regrinding $200 +$50 per lobe that needs welding and shipping both ways

 

[jhsmith]

When my 2F was rebuilt, the engine shop "reconditioned" the camshaft by adding metal and regrinding. I'm not sure what process was used to add metal - perhaps welding or plasma spray. I know he sent the camshaft out for that but don't know where. Or maybe he was just pulling my leg...

 

[B y r o n]

As previously mentioned, the only one that would know if the cam can be saved is a shop that can do the work. Let them evaluate it and give you an estimate on cost, then you can determine if it is worth it to you.

 

[Mark Jennings]

Delta Cam, Tacoma Wa. They have several grinds that work well with the F/2F…..
Also, send them your lifters to be refaced and re-hardened.

 

[brian]

Um there are lobes that look rough to me. Time to measure its actual spec's. Could be reground maybe, price a new cam.

New cam $300 plus shipping. Regrinding $200 +$50 per lobe that needs welding and shipping both ways

whos making new 2f cams?

 

[charliemeyer007]

I didn't look google found it. I still have the stuff to swap in the 4 speed and chevy - I lost the 283 I had.

Google found the shop to do the regrind too - no clue if their price or work was good. Just checking for options. Man-a-fre has a RV cam kit for like $700

 

[Mark Jennings]

I’m pretty sure the Man-a-Fre RV cams are regrinds from Delta.

 

[Mark Jennings]

I’m pretty sure, my Delta Regrind 1/2 RV cam (that’s what Delta calls it) was less than $300….and that included refacing my lifters. I did buy the High Lift valve springs from Man-a-Fre….that and a 3 angle valve job gives you a smooth idle and a better pull at 1800 to 2000 RPM.

 

[Mark W]

Delta. End of conversation.
Been using them for years. My rigs and customers too. Great prices and great work. IIRC they have three grinds "above" stock to choose from. IMHO, the "260" is the way to go. If you have a lobe or several lobes that are too worn to grind, they weld it up and make it new.

Absolutely get the lifters done too. Never put used lifters on a new cam, or even swap the lifters to different lobes. Delta makes them new and does is for a great price!


Mark...

 

[EWheeler]

Delta. End of conversation.
Been using them for years. My rigs and customers too. Great prices and great work. IIRC they have three grinds "above" stock to choose from. IMHO, the "260" is the way to go. If you have a lobe or several lobes that are too worn to grind, they weld it up and make it new.

Absolutely get the lifters done too. Never put used lifters on a new cam, or even swap the lifters to different lobes. Delta makes them new and does is for a great price!


Mark...

Just curious, do you thing this ss this worth doing on an engine that seemingly runs "fine"? Good vacuum, good compression, properly tuned carb and functioning ignition system?

 

[Mark W]

Just curious, do you thing this ss this worth doing on an engine that seemingly runs "fine"? Good vacuum, good compression, properly tuned carb and functioning ignition system?

If I am understanding what you are asking... I would never replace a cam/lifters "just because". There is no benefit in replacing a stock cam that is within spec with another stock cam. If I am building an engine, I do lean toward upgrading the cam. Even in an otherwise stock build. The OEM camshaft is so very very mild, that even an otherwise stock rig will see noticeable power AND economy gains from a mild upgrade.

Mark...

 

[EWheeler]

If I am understanding what you are asking... I would never replace a cam/lifters "just because". There is no benefit in replacing a stock cam that is within spec with another stock cam. If I am building an engine, I do lean toward upgrading the cam. Even in an otherwise stock build. The OEM camshaft is so very very mild, that even an otherwise stock rig will see noticeable power AND economy gains from a mild upgrade.

Mark...

Yes, basically asking if its worth the trouble of an upgrade from a stock cam in an engine that runs well and seems healthy. You answered in your last sentence.

 

[miller]

Delta. End of conversation.
Been using them for years. My rigs and customers too. Great prices and great work. IIRC they have three grinds "above" stock to choose from. IMHO, the "260" is the way to go. If you have a lobe or several lobes that are too worn to grind, they weld it up and make it new.

Absolutely get the lifters done too. Never put used lifters on a new cam, or even swap the lifters to different lobes. Delta makes them new and does is for a great price!


Mark...

Re building a 77 2f. What is the 260 grind? What are the other 2?

 

[Mark W]

Re building a 77 2f. What is the 260 grind? What are the other 2?

260 degrees of total duration.

The others that they offered in the past were 250 and 270 degree grinds. So far as I know this has not changed. They can also do a totally custom grind. But this is beyond the needs and beyond the expertise of most (if not all) of the people building 2Fs.

Mark...

 

[miller]

260 degrees of total duration.

The others that they offered in the past were 250 and 270 degree grinds. So far as I know this has not changed. They can also do a totally custom grind. But this is beyond the needs and beyond the expertise of most (if not all) of the people building 2Fs.

Mark...

What does the 260 do over stock? Where is it noticeable?

 

[Mark Jennings]

I run a Delta 859-250S. It’s basically just a higher lift. Not much duration or overlap change from stock. I really like it…pulls from idle to 3000 rpm, and at 2000 rpm, where the F and 2F make max torque, it is very smooth.

Delta calls it a 1/2 RV cam, it gives you a little ‘lope’ in the idle….But opens up the torque curve.

Bottom line, go Delta or Go Home!

 

[Mark W]

What does the 260 do over stock? Where is it noticeable?

I run a Delta 859-250S. It’s basically just a higher lift. Not much duration or overlap change from stock. I really like it…pulls from idle to 3000 rpm, and at 2000 rpm, where the F and 2F make max torque, it is very smooth.

Delta calls it a 1/2 RV cam, it gives you a little ‘lope’ in the idle….bit opens up the torque curve.

Bottom line, go Delta or Go Home!

"AT 2000 rpm where F and 2F make max torque".

Ummm... this is determined by... the camshaft.

The 260 comes on right at 1000 or so all the way up to rod bending, block penetrating rpm. I was unable to feel any low end gain of the 250 over the 260 and a BIG difference everywhere else in the much expanded power band when using the 260. The 270 starts to lose a little bit down low.

Mark...

 

[Mark W]

What does the 260 do over stock? Where is it noticeable?

Probably worth a quick google of something like, "camshafts explained", "What does camshaft duration and lift mean", "How do camshafts affect engine performance".

Mark...