Che70velle

iTrader: (6)

I would never doubt the engineers at Dart, but even the best high flowing dry-sump pumps with trick pulley setups don’t flow anywhere near 18 gallons per minute. Your typical run-of-the milll OEM GM LS oil pump will push about 6 gallons per minute. My HV HP 10296 Melling pump pushes about 8 gallons per minute.

Jimbo1367

Forgive me if this has been talked about. Has anybody used the newer Comp CM cartridge roller lifter?

grinder11

iTrader: (1)

Interesting stuff. I got the info from a magazine article, can't remember what mag, but probably GM Hi Tech Performance, that had that info in a quote from the Dart owner/engineer/President. I do remember the 18 gallon figure was at redline, though I dont remember the redline RPM, maybe 6,000? Just reinforces the fact, sadly, you can't believe everything you read.

140K_GXP

Definitely could be that I just have bad luck. But I swapped out the Morel's for some Johnson 2110R's and the sound is gone.

140K_GXP

At the time of my post, I had not tore into my engine.

I replaced the lifters with some Johnson 2110R's. That was about a month ago.

Surprisingly, the cam was fine. I was expecting some damage but nothing. Also, no damage that I could see on the lifter wheel either.

Only thing I can think of is the lifter was only making noise when under load and I caught it early.

With the Johnson's installed and everything back together, there is no squeaking noise anymore and car is running fine. Actually, I think that the engine is running better than before.

Sm0kie

Any fresh data? It seems most the major trusted suppliers don't stock morel anymore. So cadi lifters that seem to get a hit or miss or the 800 johnsons. Lots of people say gatermen too, but I'm skeptical however 800$ for peace of mind is a lot !

wannafbody

iTrader: (2)

BTR sources US made LS7 style lifters

Sm0kie

Too many people say the ls7 lifters fail ! I am a dumb *** and like spinning high RPM I’m hoping to build power till 7k and have a 7k redline all I need is lifters and trunnions snd a timing set and I’m done

G Atsma

Summit sells Summit-branded Morels for $225 a set

Summitracing

@Sm0kie,

As @G Atsma stated we have the Morel 7717 drop-ins if that's what you're after. Those are part number SUM-HT217-16 or SUM-HTLSKIT3 if you wanted them with new trays.

We also have a variety of brands and options for the trunnion upgrade and a timing set. You can filter each by various options to narrow results to your particular application and taste.

Cstraub

iTrader: (1)

I have no idea what you talking about. Morel LS hyd roller lifters are setting a record this year for sales. 7717 are readily available.

Cstraub

iTrader: (1)

All GM LS lifters will be laser etched with a number on the body. This will designate them from the copies.

LS1Formulation

iTrader: (13)

I have bought LS7s from BTR and they match with an old set of LS7s I bought back in early '09. Laser etched numbers, as Cstraub indicated.

wannafbody

iTrader: (2)

I wasn't aware of the part number etching. Brian confirmed on Facebook that they are manufactured in the USA.

Cstraub

iTrader: (1)

Grand Rapids, MI to be exact in the USA.

MuhThugga

Too bad that BTR doesn't sell the SLR lifters anymore. I bought a set ten years ago and they've been great.

Cstraub

iTrader: (1)

All after market lifter are a slow leak down rate compared to OEM leak down rates. Morel 7717 have a much slower leak down rate then the OEM lifter.

Metalchipper

Hello,
About 3000 miles and 9 months ago......
I put new Morels 7717 in my truck received from WS6 store [great service!]. Quietest lifters I have ever used.
Did not take them apart to clean, just oiled them up good and dropped them in. Did not have any first start up clanking noise. I stuck an exhaust valve in 50 miles which is another story I will add to an older post. Redid the valve job and started it up, the Morels, still quite as a mouse.
Running with Castrol Edge 10W-30 if you want to know.

old motorhead

iTrader: (10)

Whatever happened to the OP?

Che70velle

iTrader: (6)

Bortous is in Australia. Long story short, he built a max effort cathedral port engine that didn’t perform quite like he hoped. Then life happened and he sold the car and got out of it all. I heard maybe a year ago or so that he was interested in getting back into the LS game. We shall see how serious he is about it…