Look what the mail man dropped at the door today

-
Anytime Aaron. Thanks for your trouble.
 
OK guys the average number I could come up with was
468 exhaust
463 intake
I could see how if the dail indicator isn't in the correct location one's numbers would be Alittle off I tried it in different locations on the valve spring retainer and at different angles the cam was supposed to be ground at 489 exhaust and 489intake
So it's possible I could of been off Alittle bit with my setup I don't no
Aaron
 
Here's the question. Was that .489 supposed to be calcultaed with 1.5 or 1.6 ratio? I am guessing that would be the 1.5 figures. What's the lash figures on it? The lash could be the difference. However, if those rockers are supposed to be 1.6 ratio, it ain't lookin too good for that. what I would do at this point, is go back and measure lobe lift, like you were gonna do the first time. That way, you'll see real quick what the rocker ratio actually is.
 
I set the valve lash cold I haven't fired it up yet with the rockers on exh 022 int 012 the cam was a regrind from Oregon cam shaft ground at 1.5 ratio

I'll check it at the pushrod end tomorrow
 
What are the rockers supposed to be? 1.5 or 1.6? If they are 1.5, then they and the came are soundin REAL close.
 
There supposed to be 1.6 rocker I have the original bill of sale from clifford there is a definite deference between the stock rockers when I mic them up so I'm almost tempted to put the stock arms back on the and take some readings
 
Are you sure from a Buick straight 8? The Mopar 340 TA engine of the early 70's had adjustable rockers, similar to a 273 (forged), but offset to allow bigger intake ports. Don't know if the rocker shaft diameter was the same as a slant. The little hole in the top might be a give-away. Does that squirt oil or such?
 
srixon4406 said:
There supposed to be 1.6 rocker I have the original bill of sale from clifford there is a definite deference between the stock rockers when I mic them up so I'm almost tempted to put the stock arms back on the and take some readings
Click to expand...

With the numbers so far, I think you're going to see that they are closer to 1.5. At any rate, they are surely a damn site better than the stock ones.

Yes Bill, I am SURE those are straight eight Buick rockers.
 
BillGrissom said:
The little hole in the top might be a give-away. Does that squirt oil or such?
Click to expand...

Bill ill no more in the morning I had to put the motor back together this morning and its ready to fire back up so when I get out of work in the morning I'm going to fire it back up and ill try and post a short video for you guys to see them in action
 
Aaron, thanks very much for all the trouble. It is much appreciated.
 
Cool! A valve cover, some rocker arms and a severed foot. I see you are on the mailing list of the Canadian gay **** star that the cops are looking for. LOL
 
srixon4406 said:
I just got some parts from a member over on. Org today they look great and I can't wait to see them on the motor
IMG_20120529_171402.jpg
Click to expand...


did he bring you the foot in the mail as well? apparently that happened in toronto:angry7:
 
I'm surprised it took somebody this long before they commented on my ugly dog in the bottom of the pic:butthead:
 
You gotta bad case of monkey toes. Just sayin.
 
Lol yah my toes are jacked up its a joke around my house they come in handy when I need a extra hand in the garage:D
 
Here's a short clip with the motor running
[ame]http://static.photobucket.com/player.swf?file=http://vid1109.photobucket.com/albums/h431/srixon4406/VID_20120605_092049.mp4[/ame]
 
Those look like they are doin the job. Sounds good.
 
Did anyboby definatively determine if these are 1.5 or 1.6 ratio? If it's 1.5, would there be any benefit to switch?
 
kittypancake said:
Did anyboby definatively determine if these are 1.5 or 1.6 ratio? If it's 1.5, would there be any benefit to switch?
Click to expand...

I checked the lift four times on 1 intake and exhaust and twice on 2 each time I did it I got different numbers the final numbers I posted were a average of the six readings which I'd say the rockers are realistically ture 1.5 ratio not the advertised 1.6 but this was the first time I've checked lift so it's possible I was doing something wrong! Don't no? But I did take some measurements of the stock rockers compared to the clifford/Buick arms and the stock arms are about..850 longer then then the other ones and me and Bill Dedman determined with our modified stock rockers arm that we need to take off..100 off the push rod end of the arms
Mostly what I'm after is to take advantage of the custom turbo grind cam that's installed so from all the data I've compiled it would be safecto say the stock arms aren't 1.5 ratio there probably only 1.4 and that data is pretty much right on with what some of the slant guru's say
And for two bills I'm very pleased with the results in if there only 1.5 ratio:burnout:
I hope this helps
Aaron
 
Aaron, let me ask you this. How did you check the lift? It should have been done with ZERO lash....assuming of course it's a solid.
 
Rob I did it after I had did a cold lash on the rockers after I installed them but also since I've been running the motor on and off for the last week I've had to re lash a couple valves and I'm planning on doing them after I run the motor for about ten or fifteen minutes no a big deal but that tells me my first readings were very easily could be under calculated but not a big deal I no for a fact I'm close to my desired cam specs
 
I did do it with lash on the rockers
1 I TIRED TO GET THE VALVE COMPLETELY OPEN
2 I SET UP THE DAIL INDUCTOR UNDER STRESS AND ZEROED IT OUT
3 I ROLLED THE MOTOR TIL THE VALVE WAS RELIEVED
4 RECORD MY FINDS
5 DID IT A COUPLE MORE TIMES IN THE SAME FASHION
6 AVERAGED MY NUMBERS
AARON
 
Well long as you're happy...that's what counts. And I think it's a safe bet that you're a LOT better off than the stock rockers. Your numbers show that already I think. Thank you again for taking the time to measure everything. You're alright in my book.
 
You must log in or register to reply here.
-

Back
Top