Hope you’re right. I just lost two Comp cams flat tappets on the dyno. However I did another one a few months back, That one had Crane new old stock lifters and a generic 214/224@.059 cam. Still running fine. Same oil, same procedure etc, one good, one bad.

 

Ralph, it’s an E block original to the car. 441 cubes. It’s very limited by the tri carb intake and stock exhaust manifolds. I was able to run it last night, warmed it up, got under the hood and ran the engine to 2000 and lifter are quiet. Pretty much looks like it’s noise from the new headpipes. Sounds like closed headers.

 

Why do you think the Tri-carb is limiting you ? I would think you have more flow than many of the 4 barrel intakes.

 

Comp Cams stuff is like playing the lottery. Although, CANADIANOLDS may have something with certain Comp Cams lifters.
Have you had a roller raise a ridge on the cam lobes you can hook a finger nail on after a dyno run yet ?
.....Just my two cents worth.

 

I don’t have to hope…I do this all the time. Probably 20 hydro flat tappet builds a year for many years. I don’t run any special low tension break in springs either. Most are aggressive comp , bullet or Engle lobes…no baby Pooh lobes.

they are majority street driven and tracked a few times a year. got two more in the works now with really big hydro flats …255 and 265 at .050” with 560” and 575” lift . Super aggressive lobes off the seat. They’ll be fine , just like all the others.

I have my own procedure for making sure they don’t destroy themselves, it’s nothing spectacular. I even stopped getting the cores nitrided

 

It’s not the carbs limiting it’s the tiny ports in the intake. They are the same port size for both 4 bbl and 3-2s. Olds ports look big at the intake/head parting line because they are slash cut so it makes them look big. If you cut an intake open at 90 degrees you will see the ports are very small like 1-1/4” square. Stock exhaust and short headpipes didn’t help much either but I wanted to know what it would run like in the car so we didn’t use dyno headers. Olds tuned the intake for torque and it worked but you won’t get much air through them. By the way I want to comment on how much Mark Remmel (cutlassfi) helped on this build. He answered all my stupid questions patiently and helped with getting the heads done and sold me good parts reasonably. I am 1600 miles away and he still got stuff to me quickly. Can’t say enough good things about him, he treated me like a friend.

 

Could you share your method with us?

 

r

you got lots of help from someone on here but now it leaks oil real bad and has lifter noise?

hard to figure out if you’re going to pull it out because of the problems or you’re happy because you got help with it.

what’s your plan?

 

How did you get to that conclusion? I thought I was very clear. I pulled the engine because of the leaks and went through it.

 

Were was it leaking from?

 

Pan, rear main.

 

no, you have been anything but clear. You came here asking about .921” hyd rollers because yours has some bad valvetrain noise that you suspect could be a lifter going bad

then you said it’s got bad oil leaks too..now you say you had it apart.? Was that before or after the lifter noise or because of the lifter noise?

when you say “I pulled the engine and went through it” did you yourself go through it?

we are not mind readers..it’s your engine, tell us the story on it from when you got it. Don’t start in the middle and jump around.

 

I wish I had never started this thread. Why don’t you read the whole damn thread and then you will see. I don’t see anyone else having trouble figuring it out. I’m not going to waste any more time explaining it to one person. You bragged about having a method to break in cams with no problems, when I asked you to explain you wouldn’t respond. I’ve been putting cams in engines since1967 and have only had one go flat and it was from a bad batch of General Kinetics cams. Should I say I have a method to break in cams?

 

If you can’t tell the difference between manifold leaks and lifter noises…you need someone’s help. 🤣

 

Since were on the topic of lifters, whats the opinion on Comp 857-16 roller lifters, would you run them?

 

Not an exhaust leak eh? Yeah I need help just not yours 😀

 

What is your question ?

 

is English your second language?

i didn’t say it wasn’t an ex leak..I said if you can’t tell the difference, you need help.

 

I speak English, not Canadian sorry Vortec Pro.

 

Bernhard wrote:
Dale does speak a foreign language it's called HP/ TQ, the message can be misinterpret during translation. Dale is not Vortec Pro but is another that speaks the foreign HP/TQ language.

On a side note you have a very nice car /build and hope that any issues that you may be having are sorted out soon.
If you have concerns over a flat tappet cam going flat cut the filter open and inspect the filter media, fillers are cheap as is a cutter.
Thanks for posting
Good luck

 

Hey, the last thing I wanted to do was get into a pissing contest with anybody. The problem with forums is you sometimes are answering a question 3 posts above so it can get disjointed. All I was asking in the beginning is if there was any way to get a roller lifter other than bushing my nice E block to .842. I took the engine out because it seemed a little weak and it leaked a lot of oil. It was at this point that I found the mismatched pistons. It was completely rebuilt and it is in and running well. I did think there was a chance I had valve train noise at about 2000 but turned out to be noise from the new head pipes that sounded like closed header. It was not an exhaust leak. I know Canadian Olds is not Vortec Pro but he was kind of acting like him when he attacked me.The valve train was quiet when it was running on the dyno so this was something I had not heard before. Is everything OK now? Thanks everyone for the advice.

 

no, the min port cross section of a factory intake is not 1 1/4” square. Even the small black is bigger at 2.12” min , which is approximately 1” upstream of the manifold face at the min cross section

the big block is approx 1.325” x 1.775” = 2.35sq inches

these are taken perpendicular to the port centerline. You are spreading bs

 

There ya go…now it makes sense. The story from the beginning.

i never attacked you…believe me, if I do, you’ll know it . You have a lot to learn , like how to measure min cross section on an intake