We agree on something..

 

We just made 1008hp on the engine dyno with stock rockers

 

I can't run stock rockers with the AllPro heads, I think it's something to do with the pedastals.

 

What about jesel? are they for only solid?

 

I ran my stock shortblock, stock lifters, 921's, and Harland Sharps to 6,800rpm.
LS2, Comp R lifters, 921 springs shimmed, and Harland Sharps to 7,600rpm.
New motor, Morel's, TEA gold duals, and Harland Sharps to 7,800rpm.

I love the Harland Sharp rockers. They have taken some serious abuse and haven't missed a beat. I tried the (Comp) T&D shaft mounts but the motor wouldn't pull past 6,200. Still need to contact them and get that $1,000 mistake taken care of.

PSJ, if the heads are coming off. I'd put in a set of Morels. Check spring pressure and shim if needed. Put on a set of Harland Sharps or Jesel's if you want to spend big money. Then take it out and run an 8.

 

i run stock rockers on all pros over 1100 engine hp, maybe stock lifters too?

i think you should re-check your pushrod length or try some beefier lifters to combat whatever hoss-dog springs you run.. or try for more oil pressure

 

thats what ive been telling everyone i know who asks me. i knew you guys have been using em for some time. thats why i have stockers on my motors

 

Currently it's 1.7 Y/T's, and OE style Comp lifters no R's I don't think. But I know that Andy (LASTLS1) is running stock lifters and rockers right.

Working up a plan of action with Speed Inc. as we speak, I want to get the car out again ASAP. Thanks everyone!

 

Why don't you ladies go take your drama somewhere else.

So Mike you ran a set of Harlan Sharps with AllPro heads right?

 

john, do not run harland sharps.

 

Mike Brown likes them Zach, how come you think he is steering me wrong? He's gone mid 8's with his.

 

Interesting that happened.....

When I built my current engine, I had a similar incident, but it was during the running in stage I noticed, so may have been in part my own fault ??

Car was off a cylinder, and it turned out a pushrod had broke ( 7.350 trickflow )
The pushrod had slipped out of the rocker, and ended up snapped. The rocker was damaged slightly, but the cup was fine, 1.7 YT's with stock lifters.
This engine had never seen beyond 3000rpm at this point I think, and no boost.. I dont recall revving any harder anyway.

I fitted a new set of 7.400" trickflows, and to date, its been fine. So I'm guessing I might not have had enough preload.
Highest Ive seen is about 7100rpm, and it seems to run fine at that.

 

No, our All Pro's have Jesel's and a solid roller.
I'm just letting you know what has worked for me without failure. There are a lot of people on this site and even those that build stuff for us that won't run the stuff we do. Or try some of the stuff we do. But who else is spinning a hydr. motor to 7800? Or running over 170mph? And this just isn't one time. We take it to the track and do it time and time again.
Hope you get it back to the track ASAP.

 

i dont think hes steering you wrong john, i just have installed 2 sets and i feel they are huge and very over weight for the job at hand. they are ridilcliously sized and you have nothing to benefit over a jessel set or stock ones for that matter (i realize you cant use stockers in an all pro)

a $400 set of lifters sold at summit do not sound like what i would put in my 8 second huge money setup. just saying.

and about him goin 8s with em, i bet you "some guy" has gone 8's with YT's. doesnt make it the norm or something you should try.

again just imo from all the info ive taken in over the years on this site. my vote is a shaft mount jessel OR figure out someone to make a mount and reuse the stockers. the amount of design and R&D that goes into OEM parts is ridiclious. id also get a new set of the lifters gm is producing, the caddy ctsv ones that have reved over 8500 rpm in the race caddy. Somethin stupid cheap like $150ish my cost.

 

Not trying to say he's steering you wrong John. But has anyone ran these lifters in a high boost, high seat pressure setup? Spinning it to 7,000+. Probably will work but you want to put something in there you don't know about?
You guys keep reading about what should or shouldn't work. And we'll keep testing it and actually know. Either way we'll be ahead of you.
Boy, who ever thought about using truck manifolds in a F-body for a turbo setup...

Good luck John.

 

Number one rule of going fast is find out what the other fast guys are using and use that lol. The valvetrains on these cars are extremely stable compared to a lot of engines and there is a lot of combinations that will work. Main thing is to isolate what happened and fix it so it doesnt happen again..

I for one am glad when Kurt, Mike Brown, MM, INTMD8 and others with good running cars post info here, even if its last years info. Real world experience beats all secondhand internet info

 

my motor builder always says the same thing to me " dont try to reinvent the wheel" meanning use what works!

 

do i need to take a picture of my stock rockers on all pros? I can , but it will cost you.

maybe mine were machined differently?

 

youre right about the "new" gm lifters, but I personally have run OEM lifters to 800 hp and 16 lbs of boost, dont see why the new and improved lifter from gm wouldnt be all that and then more.

btw right back at you

dont be a little girl and get all pissy, im not startin a fight here. i just dont like those fat pigs of a rocker.

btw
https://ls1tech.com/forums/showpost....40&postcount=2

 

yes, please do, so john can stop saying he thinks

i dont see how the heads can be different. if you can run yt/harlands on em, why cant you run oem ones?