1969 L-88 cam specs - CorvetteForum - Chevrolet Corvette Forum Discussion

Go Back   >
Log In 
Register FAQ Search Today's Posts Mark Forums Read Vendor Directory

C3 Tech/Performance
V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette

1969 L-88 cam specs

Reply
 
 
 
Thread Tools Search this Thread
Old 09-29-2003, 07:43 AM   #1
467-Ratman
CF Senior Member
Thread Starter
 
467-Ratman's Avatar
 
Member Since: Aug 2001
Location: Bay City MI.
Posts: 1,002
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1969 L-88 cam specs

I know the 69 L-88 cam was a solid style but anybody know what the specs where? Duration and lift and max rpm. Thanks!
467-Ratman is offline   Reply With Quote
Old 09-29-2003, 08:06 AM   #2
Corey_68
CF Senior Member
 
Corey_68's Avatar
 
Member Since: Feb 1999
Location: Dallas,Tx
Posts: 33,130
Thanked 4 Times in 4 Posts
Default Re: 1969 L-88 cam specs (467-Ratman)

Quote:
I know the 69 L-88 cam was a solid style but anybody know what the specs where? Duration and lift and max rpm. Thanks!
1967-1969 L88 specs:

I'm sure others will know exactly, but I know it's pretty radical. I want to say it's 278/278 @ .050 .560/.560 108LSA. Max rpms should be around 7,200rpms.

:cheers:


[Modified by Corey 68, 7:08 AM 9/29/2003]
Corey_68 is offline   Reply With Quote
Old 09-29-2003, 08:13 AM   #3
77-C3 & 89-C4
CF Member
 
Member Since: Sep 2003
Location: Apsley ON
Posts: 98
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: 1969 L-88 cam specs (Corey 68)

69-L88 cam is yesterdays news, Buy a modern cam with a 272 duration if Auto or a 286 duration if stick. Enjoy
77-C3 & 89-C4 is offline   Reply With Quote
Old 09-29-2003, 08:40 AM   #4
467-Ratman
CF Senior Member
Thread Starter
 
467-Ratman's Avatar
 
Member Since: Aug 2001
Location: Bay City MI.
Posts: 1,002
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: 1969 L-88 cam specs (77-C3 & 89-C4)

I just wanted to compare to my Crane 296-2 cam which is duration 236\246 at .050 and 553\571 for lift.......
467-Ratman is offline   Reply With Quote
Old 09-29-2003, 09:20 AM   #5
DJ Dep
CF Senior Member
St. Jude Donor '05-'07
 
DJ Dep's Avatar
 
Member Since: Oct 2002
Location: Silver City NM
Posts: 5,698
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: 1969 L-88 cam specs (467-Ratman)

L88 specs:
.540/.560 lift
334/364 duration.

ZL-1 specs:
.560/.600 lift
347/359 duration

HARDLY what I would call "old news".
They are TRUE performance cams and not a lot of fun to drive around with.
But if you can take the rough idle and want a big block to breathe, these WILL get the job done quite nicely.

Dep



[Modified by Dep, 8:23 AM 9/29/2003]
DJ Dep is offline   Reply With Quote
Old 09-29-2003, 09:51 AM   #6
Chuck Harmon
CF Senior Member
 
Chuck Harmon's Avatar
 
Member Since: Apr 2000
Location: San Jose California
Posts: 3,285
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: 1969 L-88 cam specs (467-Ratman)

69 L88 cam specs are:

332/333 degrees @ .024/.026" lash point
354/360 degrees @ 0.0" lash
264/270 @ .050"
.536/.554" @ .024/.026" lash
.560/.580" gross lift @ 0.0" lash

My stock spec L88 made 480rwhp with no tuning on the dyno. I just drove it there and they hooked it up. I honestly believe that I could have bettered that number with a bit of tweaking. Anyway, I think that even 40 year old technology proved itself to be pretty potent, even if "yesterday's news". The dyno operators were certainly very impressed. Only a few unjuiced/unblown engines have done better on this forum.

"Today's News", the new Crane solid roller is in, rocker geometry is now being adjusted. Hopefully engine/trans will be back in the car the next week.

Chuck
Chuck Harmon is offline   Reply With Quote
Old 09-29-2003, 10:03 AM   #7
gkull
CF Senior Member
 
gkull's Avatar
 
Member Since: Apr 1999
Location: Reno Nevada
Posts: 17,463
Thanked 48 Times in 39 Posts
Default Re: 1969 L-88 cam specs (Chuck Harmon)

Chuck with specs like those .050 you would think that it was a teriffically hot cam. But it's not when you graph out the slow ramp speed and minimal amount of time that it spends at max lift.

Spring technology has come along way.

Get that new motor going!!!!!!!!!!!!!!!!!!!!!!!!!! :thumbs:
gkull is offline   Reply With Quote
Old 09-29-2003, 10:42 AM   #8
Chuck Harmon
CF Senior Member
 
Chuck Harmon's Avatar
 
Member Since: Apr 2000
Location: San Jose California
Posts: 3,285
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: 1969 L-88 cam specs (gkull)

Quote:
...But it's not when you graph out the slow ramp speed and minimal amount of time that it spends at max lift.
Hence, the new Cam. Crane says it should be good for about 40hp more, plus give me better idle and mileage. For me, mileage is what it's all about! A real "green" machine!

Still, I have to take my hat off to the factory guys for designing something that makes that much power.

Chuck :cheers:
Chuck Harmon is offline   Reply With Quote
Old 09-29-2003, 11:07 AM   #9
467-Ratman
CF Senior Member
Thread Starter
 
467-Ratman's Avatar
 
Member Since: Aug 2001
Location: Bay City MI.
Posts: 1,002
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: 1969 L-88 cam specs (Chuck Harmon)

Thanks to all for the info, I really like my Crane powermax cam, but just like the L-88 its pretty weak down low then watch out! I do love the sound it makes and when you stand behind the car the exhaust hits you pretty hard. I am off to the dyno shop tommorrow to see what the beast really does. I will post the results.....
467-Ratman is offline   Reply With Quote
Old 09-29-2003, 12:14 PM   #10
joe73vette
CF Senior Member
 
joe73vette's Avatar
 
Member Since: Dec 2000
Location: Eastern Connecticut
Posts: 2,198
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: 1969 L-88 cam specs (467-Ratman)

That's what makes them old news, the modest lift for the duration. I had an LT1 cam in my street rod, and it needed 1.6 rockers. Then it was really fun, especially above 3000rpm. I imagine a similar rocker upgrade would help the big block cams. Joe
joe73vette is offline   Reply With Quote
Old 09-29-2003, 12:52 PM   #11
DJ Dep
CF Senior Member
St. Jude Donor '05-'07
 
DJ Dep's Avatar
 
Member Since: Oct 2002
Location: Silver City NM
Posts: 5,698
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: 1969 L-88 cam specs (Chuck Harmon)

Hey Chuck...if "mileage is what it's all about, I got a nice used Chevette for sale. You could still say it's a "Vette". :D

Dep
DJ Dep is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • 1969 L-88 cam specs
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    L88 question ptaleo C3 General 10 06-30-2016 11:43 AM
    '67 L88 cam # corvette67jim C1 & C2 Corvettes 31 06-18-2012 02:20 PM
    Anyone know the specs of a 77 L-48 cam? daanbc C3 Tech/Performance 11 03-17-2012 09:22 AM
    cam gurus what about the comp cam nostalgia zl1? elle88 C3 Tech/Performance 2 07-13-2009 11:51 PM
    NEED L98 1991 stock cam spec's 91vette6spd C4 Tech/Performance 2 08-31-2006 02:17 AM


    Tags
    050, 1969, 1989, 350, 69, cam, cams, camshaft, corvette, dyno, l88, lt1, specs, test, zl1

    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    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
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump


    All times are GMT -4. The time now is 01:57 PM.