#1  
Old 07-31-2022, 09:21 PM
BLANK1's Avatar
BLANK1 BLANK1 is offline
Chief Ponti-yacker
 
Join Date: May 2003
Location: Pandora, Ohio, U.S.A.
Posts: 723
Default Tried the Lunati 271/278 cam. Went faster.

I'm sure some of you have seen my posts on making changes on my car and going nowhere. Well I had a front timing cover leak and while I had it apart I figured I'd put the Lunati 271/278 @ .050 solid roller in. Installed it at 106 ICL. 108 LSA. Also put some 1.72 rockers on which gives me close to .700 lift. I doubt putting the 1.72's on the Jones cam would have made much difference. Went to Muncie Friday night for a test n tune but only got one pass. Was supposed to be from 6 to 10 but they quit it around 8 because of a gamblers race. That sucked. Anyway it ran faster but spun a little on the line. Pulled really hard on the top end. Need to get the 60 ft down. One image is from old timeslip with Jones cam and other with Lunati cam. Car just feels lighter with the Lunati cam.
Attached Thumbnails
Click image for larger version

Name:	20220729_200218.jpg
Views:	245
Size:	45.9 KB
ID:	595460   Click image for larger version

Name:	received_468003414758096.jpg
Views:	249
Size:	29.7 KB
ID:	595461  

  #2  
Old 07-31-2022, 10:36 PM
PAUL K's Avatar
PAUL K PAUL K is online now
Ultimate Warrior
 
Join Date: Feb 2004
Location: Sugar Grove IL USA
Posts: 6,331
Default

Nearly 3 mph is a nice gain

__________________
Go fast, see Elvis!
www.facebook.com/PaulKnippensMuscleMotors
The Following User Says Thank You to PAUL K For This Useful Post:
  #3  
Old 08-01-2022, 08:36 AM
Half-Inch Stud's Avatar
Half-Inch Stud Half-Inch Stud is offline
Ultimate Warrior
 
Join Date: Jul 2000
Location: BlueBell, PA or AL U.S.A.
Posts: 18,473
Default

Time for 60-foot tuning.

  #4  
Old 08-02-2022, 06:21 AM
J.C.you's Avatar
J.C.you J.C.you is offline
Ultimate Warrior
 
Join Date: Jan 2001
Location: moccasin bayou, Louisiana
Posts: 4,808
Default

I have one ran in several combos, ported iron heads and eheads. Always performed well. In a conversation with Butler many years ago he called it the “old stand by cam” .

__________________


1963 Cat SD Clone (old school) streeter
1964 GTO post coupe, tripower, 4speed (build)
1965 GTO 389 tripower, 4 speed, driver
1966 GTO dragcar
1966 GTO Ragtop
1969 Tempest ET clone street/strip
1969 GTO Judge RA lll, auto
1969 GTO limelight Conv. 4speed go and show (sold)
1970 GP SSJ
1970 GTO barn find..TLB…390 horse?….yeh, 390
1972 GTO 455 HO, 4 speed, (build)
1973 Grand Safari wagon, 700hp stoplight sleeper
525ci DCI & 609ci LM V head builds
  #5  
Old 08-02-2022, 08:31 AM
Half-Inch Stud's Avatar
Half-Inch Stud Half-Inch Stud is offline
Ultimate Warrior
 
Join Date: Jul 2000
Location: BlueBell, PA or AL U.S.A.
Posts: 18,473
Talking

Quote:
Originally Posted by J.C.you View Post
I have one ran in several combos, ported iron heads and eheads. Always performed well. In a conversation with Butler many years ago he called it the “old stand by cam” .

Would have figured Jim to say " Boy, that's a big cam."

  #6  
Old 08-02-2022, 12:20 PM
Tom Vaught's Avatar
Tom Vaught Tom Vaught is offline
Boost Engineer
 
Join Date: Dec 2001
Location: The United States of America
Posts: 31,301
Default

Quote:
Originally Posted by Half-Inch Stud View Post
Would have figured Jim to say " Boy, that's a big cam."
The Keens ran a 276/282 @ .050 / .740 lift camshaft with their Supercharger engine in 1998 in a 347 cid engine and loved it.
Best MPH at the time with the car.

So the only difference, in the different engines, was they ran their engine a higher rpm and with boost vs NA and a much larger engine
for JC's engine. Cam is just letting the engine breathe properly. If designed correctly.

Tom V.

__________________
"Engineers do stuff for reasons" Tom Vaught

Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
The Following User Says Thank You to Tom Vaught For This Useful Post:
  #7  
Old 08-02-2022, 09:56 PM
Scott Stoneburg's Avatar
Scott Stoneburg Scott Stoneburg is offline
Ultimate Warrior
 
Join Date: Sep 2007
Posts: 2,197
Default

What were the specs on the jones cam?

  #8  
Old 08-02-2022, 10:11 PM
BLANK1's Avatar
BLANK1 BLANK1 is offline
Chief Ponti-yacker
 
Join Date: May 2003
Location: Pandora, Ohio, U.S.A.
Posts: 723
Default

Jones cam card
Don't know why it keeps flipping the photo.
Attached Thumbnails
Click image for larger version

Name:	20201211_173035.jpg
Views:	129
Size:	73.4 KB
ID:	595662  

  #9  
Old 08-03-2022, 09:45 AM
Scott Stoneburg's Avatar
Scott Stoneburg Scott Stoneburg is offline
Ultimate Warrior
 
Join Date: Sep 2007
Posts: 2,197
Default

Nice increase from a cam swap. Did you change the valve springs at the same time? I have very good luck with an old Lunatic grind as well.

  #10  
Old 08-03-2022, 11:45 AM
Ken MacNicol's Avatar
Ken MacNicol Ken MacNicol is offline
Chief Ponti-yacker
 
Join Date: Feb 2001
Location: Hendersonville, Tenn. ,USA
Posts: 527
Default

Quote:
Originally Posted by BLANK1 View Post
I'm sure some of you have seen my posts on making changes on my car and going nowhere. Well I had a front timing cover leak and while I had it apart I figured I'd put the Lunati 271/278 @ .050 solid roller in. Installed it at 106 ICL. 108 LSA. Also put some 1.72 rockers on which gives me close to .700 lift. I doubt putting the 1.72's on the Jones cam would have made much difference. Went to Muncie Friday night for a test n tune but only got one pass. Was supposed to be from 6 to 10 but they quit it around 8 because of a gamblers race. That sucked. Anyway it ran faster but spun a little on the line. Pulled really hard on the top end. Need to get the 60 ft down. One image is from old timeslip with Jones cam and other with Lunati cam. Car just feels lighter with the Lunati cam.
Now it is time for a good converter

  #11  
Old 08-03-2022, 08:16 PM
BLANK1's Avatar
BLANK1 BLANK1 is offline
Chief Ponti-yacker
 
Join Date: May 2003
Location: Pandora, Ohio, U.S.A.
Posts: 723
Default

Scott,
Using same valve springs.
Ken,
This is a new converter. 4800 stall from Perfect Converter Co.

  #12  
Old 08-03-2022, 08:43 PM
Scott Stoneburg's Avatar
Scott Stoneburg Scott Stoneburg is offline
Ultimate Warrior
 
Join Date: Sep 2007
Posts: 2,197
Default

Did you change converter and cam at the same time?

  #13  
Old 08-03-2022, 10:25 PM
BLANK1's Avatar
BLANK1 BLANK1 is offline
Chief Ponti-yacker
 
Join Date: May 2003
Location: Pandora, Ohio, U.S.A.
Posts: 723
Default

Scott,
No. Same converter. Only thing I changed was the cam and rockers. Kept everything else the same. Didnt even touch the carb.

The Following User Says Thank You to BLANK1 For This Useful Post:
  #14  
Old 08-04-2022, 11:37 AM
Ken MacNicol's Avatar
Ken MacNicol Ken MacNicol is offline
Chief Ponti-yacker
 
Join Date: Feb 2001
Location: Hendersonville, Tenn. ,USA
Posts: 527
Default

That car should 60 foot in in the 1.4's and with that MPH it should run around 10.5's

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:35 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017