seat pressure on an Isky 77-b cam
 

Hi All, what is the seat pressure on a 77-b cam. Thanks Bill

Re: seat pressure on an Isky 77-b cam
 

60 is plenty.

Re: seat pressure on an Isky 77-b cam
 

seem as if I remember Ol' Ron saying that a 77B is a waste of money because it is so near a stock cam. I also THINK I remember that rumble seat used a 77B in his '34 roadster engine and everyone commented on how strong his engine was. Of course, I think it was about 286 ci.

What are the strengths of 77B?

Re: seat pressure on an Isky 77-b cam
 

Thanks Pete, I have ridden in Rumbleseat's roadster and yes it really did get up and go. This engine I am building is a 276.

Re: seat pressure on an Isky 77-b cam
 

I have a 77B in my car and sure wish it was in the car of a stranger. I installed LZ springs at 50 lbs. The only positive comment I can make is that it doesn't grind up the lobes or the lifters like the 400 jr.

In fairness to Isky, I will mention that my cam is a fake and that might explain why the timing is all over the chart. Some of the closing points are 15 degrees different than others.

Re: seat pressure on an Isky 77-b cam
 

I don't run any more than 50 lbs on the street cams like the L-100, Max #1, 1007B. and a few others I can't remember. The 77b is a decent cam and produces allot of low end torque. However so does the stock EAB cam and you don't have to spend 240 dollars for it. I put over 2000 miles in Pauls roadster and it was one of the finest running engines I ever road in. Colorado has a few hill in it and I think we went up all of them with out a problem. Yes it was a 286 ci.

Re: seat pressure on an Isky 77-b cam
 

The cam I have is a new ISKY that I got for $150 at an estate sale.

Re: seat pressure on an Isky 77-b cam
 

I ran the 77B in my '40 for several months, and I was disappointed. It's essentially a stock cam. Perhaps with more cubes, it would have been better, but I had it in a '40 block at std 239". It didn't run any better than the 53 Merc cam I had in my '49. It idled very well and ran OK, but I wouldn't pay for one again.

Re: seat pressure on an Isky 77-b cam
 

I have a 77-B in the 49 with 260 cu. The cam works real good with good idle lots of torque and decent on gas. Jack.

Re: seat pressure on an Isky 77-b cam
 

Oh, and as to spring pressure, no more than a stock cam.

Re: seat pressure on an Isky 77-b cam
 

Um, a standard bore '40 Ford block is 221 cubes...

Re: seat pressure on an Isky 77-b cam
 

Not when you pull the sleeves and bore for 239 std pistons.

Your right, it would have been 221. When was the last time you saw a '40 block at std? Too expensive to do all sleeves.

Re: seat pressure on an Isky 77-b cam
 

Your post said a standard '40 block. If you pulled the sleeves, it is no longer a standard '40 block.
Just sayin'...

Re: seat pressure on an Isky 77-b cam
 

Whatever, my point was it's not oversize from 239.

Re: seat pressure on an Isky 77-b cam
 

I figured guys should know (accurately) as there seems to be some difference in performance of this cam based on cubic inches. there is obviously a big difference in 221 vs. 239. Sorry I got your undies in a bundle...

Re: seat pressure on an Isky 77-b cam
 

Well, if ya picking nits...

He didn't say "standard '40 block"

He did say "'40 block at Standard 239", which I took as 239, not 239 +.030.

So, see, we all interpret things differently, and I'm sure Russ knows what he has and what he meant;)

Re: seat pressure on an Isky 77-b cam
 

I see how that could be read that way. However, I thought it important that the original poster understood this particular engine was no longer stock / 'standard". It does seem to make a difference in performance with this camshaft.
And, anytime you enlarge a bore, the block is no longer "standard". I don't care if that's .030" or .187". Enlarging the bore, regardless of method, and the block is "over bored".

Re: seat pressure on an Isky 77-b cam
 

I have a 40 block, standard bore, 239 cu, with sleeves, mercury.

Re: seat pressure on an Isky 77-b cam
 

Mercury blocks were 239, Ford, 221.

Re: seat pressure on an Isky 77-b cam
 

Russ, Five right off the top of my head. Probably more if I gave it more thought. Two were NOS, the other three, when rebuilt, were sleeved.
I have many sets of NOS sleeves and the means and knowledge to replace them. That makes sleeving a much better alternative (financially) than boring.
Prior to retirement, I would bore as I had access to the requisite machines.