Don Terrill’s Speed-Talk

1980RS wrote: ↑Sat Feb 04, 2023 2:38 pm
Is your cheater cam a flat tappet or a roller cam?

The ones we make for the 602 Crate engines are hydraulic flat tappet.
The ones we make for the 604 Crate engines are hydraulic rollers.

EDC wrote: ↑Sat Feb 04, 2023 9:10 am A quick note....

Maybe the PAC Racing 1201???

/awaiting the wrath of the elders.

That's too much spring for the mechanical flat tappet race cams we make, that turn 7,600rpm.

Hi, Mike, I trust your recommendations, so trying to learn something here. I've been going to beehives whenever possible and have usually found about another 300-500 RPM over same seat pressure cylindrical. Why would we choose the old school cylindrical over the beehive? The GM cam he's running is ...

This is all you need with that cam.

https://www.racingsprings.com/index.php ... 11373.html

rumpity_z28 wrote: ↑Thu Feb 02, 2023 12:37 pm

CamKing wrote: ↑Mon Jan 09, 2023 10:18 am I would not go over an intake duration of 228@.050"

Hey Mike do you make a cam that you would recommend?

We can make you something, but I need more info.
When you have time, fill this out, and submit it.
http://jonescams.com/street-performance/

Like said above, the 6-71 will come in right away, and hold the boost, so you want to run a bigger cam, to make the engine more efficient at the higher RPM's The larger duration will make it less efficient at low RPM's, but because it gets up on boost so quick, you won't notice.

smokie wrote: ↑Wed Feb 01, 2023 9:07 pm
But would they be ok with your cam you recommended?

I wouldn't run them with the cam I recommended.

EDC wrote: ↑Thu Feb 02, 2023 6:58 am

CamKing wrote: ↑Wed Feb 01, 2023 5:38 pm

EDC wrote: ↑Wed Feb 01, 2023 3:29 pm

Roxboro, North Carolina is now in Mexico?

Did they move production out of Mexico, or just assembly ?
When ?

From start to finish... about ten years ago...

Thanks for the info.
I stand corrected.

My lifters are Lunati, I think they are the street hydraulic roller lifters. Those are the Morel Street Performance lifters, and are made in Mexico. They're fine with a mild hydr roller profile with moderate spring pressures. I would not run them in any aggressive lobe profiles, or with heavy sprin...

You're welcome. I went out of town for the extended weekend, and when I got in to work yesterday, I was surprised to see Speed-Talk had turned into an "adults Only" site. :lol: In 4 days, the spammers had created about 300+ user accounts on Speed-Talk. Most were left inactive, for them to use later....

Curious Mike. Other than Johnson, who carries a US made roller lifter? Something that would take an aggressive profile and/or provide reasonable service life. Nothing spicy. 7k max. Maybe something along the lines of your EHR .360" lobes. There's a few companies making private label HR lifters in t...

How long have they been made in Mexico? This set is about 7-8 years old, I just never used them until now. Are they suited for the cam I have or do I need to go with something else? Their Street Series has always been made in Mexico. That's why they're half the price of the normal Morel HR lifters....

My lifters are Lunati, I think they are the street hydraulic roller lifters. Those are the Morel Street Performance lifters, and are made in Mexico. They're fine with a mild hydr roller profile with moderate spring pressures. I would not run them in any aggressive lobe profiles, or with heavy sprin...

Since no one has any real data on these, I'm going to lock this thread, until someone actually runs them.
It's not a "Game changer" until they're proven to work.
Right now, they're just a sales pitch.

Do not comment on a spammers post, just report it.
When you comment on it, the thread remains after I erase the spammer.