Re: Higher value 69 Chevelle COPO 427 or L-78/L89?
 

Best run on the wide ovals has been 12.19@115 1.87 60 ft. ---11.68@116 1.58 60ft.with the et streets.

Re: Higher value 69 Chevelle COPO 427 or L-78/L89?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Postsedan</div><div class="ubbcode-body">Tim,

Tell us ALL how much SLOWER the LS6 is compared to the L89 Post Sedan Chevelle [img]<<GRAEMLIN_URL>>/3gears.gif[/img]

Dan </div></div>
My LS6 is no slouch .I certified the LS6 - factory GM cam ,advertised comp. 11.25, no porting AT ALL.
Cam and carb are actually to small for the LS6 (SAME cam 396-427-454). ALL done makin power by 6200. I pick up 1 1/2 mph going to a 850cfm and pulls to 6500.

396 takes advantage of the NEW Pure stock rules with 1.5 over stock compression (12.5)with 50 less Cubes the factory cam retarded 3* degrees and 780 pulls<span style="font-weight: bold"> hard </span>to 6800 rpm. Same cam-same carb. Better utilized.. Also ZERO porting .The post car is 500lbs lighter with L89 heads and Deleted options. Only down 20 hp on dyno but allows to launch harder without blowing the tires! Less mass, lots power- goes vrrooomm.. [img]<<GRAEMLIN_URL>>/burnout.gif[/img]
Take Erics 396 dyno Build, add 1.5 compression,retard cam,I went threw 60 rocker arms to find the Most lift,and tune to a razors edge. [img]<<GRAEMLIN_URL>>/naughty.gif[/img]

Re: Higher value 69 Chevelle COPO 427 or L-78/L89?
 

Just as I suspected..... thanks Tim

Dan

Re: Higher value 69 Chevelle COPO 427 or L-78/L89?
 

I can not wait till PSMCDR, I am on the list at the Comfortable Inn this year.

Your L89-Post will be too fast 11.5, will you be doing something to keep it from breaking out?

Ryan

I suck at staying on topic (can this topic be 1969 Chevelles?)

Re: Higher value 69 Chevelle COPO 427 or L-78/L89?
 

I missed an LOL after the 11.5, your Post Sedan will be a huge hit this year.

PS: Are you related to other Clary's in the Musclcar world?

Ryan

Re: Higher value 69 Chevelle COPO 427 or L-78/L89?
 

Won't be. 11.50's ,My guess is 11.90's-.85... It's ok to dream- just not that big.

Re: Higher value 69 Chevelle COPO 427 or L-78/L89?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Ryan1969Chevelle</div><div class="ubbcode-body">I missed an LOL after the 11.5, your Post Sedan will be a huge hit this year.

PS: Are you related to other Clary's in the Musclcar world?

Ryan </div></div>

The only relationship they share is SPEED!

Dan

Re: Higher value 69 Chevelle COPO 427 or L-78/L89?
 

Copy that, only &quot;Brothas from anutha mutha&quot;

11.90 is insane for a 69 Chevelle.

120 mph?

(Side note, off topic of course, Jimmy Johnstons Vette going 125 mph in the 1320 is reason enough to attend PSMCDR.)

Ryan

Re: Higher value 69 Chevelle COPO 427 or L-78/L89?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Ryan1969Chevelle</div><div class="ubbcode-body">Copy that, only &quot;Brothas from anutha mutha&quot;

11.90 is insane for a 69 Chevelle.

120 mph?

(Side note, off topic of course, Jimmy Johnstons Vette going 125 mph in the 1320 is reason enough to attend PSMCDR.)

Ryan </div></div>


Yah, but they all get beat by a <span style="font-weight: bold">GIRL</span>. [img]<<GRAEMLIN_URL>>/naughty.gif[/img]

Re: Higher value 69 Chevelle COPO 427 or L-78/L89?
 

&quot;Yah, but they all get beat by a GIRL.&quot;

Now that is a &quot;cup is half full&quot; statement if I ever heard one.

She kicks everyones A##.

Ryan

https://www.yenko.net/attachments/use...88_julie_1.jpg