Re: results of added compression to 511
[Re: Bad340fish]
#2780379
06/01/20 03:34 PM
06/01/20 03:34 PM
|
Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
|
I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
|
What I learned at Pettis Performance years ago was that going from say 9.5 to 11.5 comp. made way more power than going from 12.1 to 14.1 fwiw. On another note however, I have a customer w/a 3450 lb Chevelle on 93 pump gas w/a 572 at 11.7 comp. that went a best of 8.84 at 151 w/a 2-circuit cast 1250 Dommy..........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
|
|
|
Re: results of added compression to 511
[Re: mopar dave]
#2822567
09/19/20 12:06 PM
09/19/20 12:06 PM
|
Joined: May 2009
Posts: 511 Temperance, MI
68 HEMI GTS
mopar
|
mopar
Joined: May 2009
Posts: 511
Temperance, MI
|
I just ran my 10.5:1 512 out at milan Wednesday. Car didn’t hook with the 6 year old drag radials. I gotta think it’s 3450 with me in it. All steel 69 dart except for the hood and front bumper. First time out with this combo, I have some work to do. I did make some other better passes earlier in the evening but the timing system was down. I think it’s more about combo than anything.
Last edited by 68 HEMI GTS; 09/19/20 12:23 PM.
68 Dart GTS "HEMI" 10.30 @ 131 pump gas street car 3780# 69 Roadrunner 511 six pack 10.92 drive to track street car
|
|
|
Re: results of added compression to 511
[Re: 68 HEMI GTS]
#2822590
09/19/20 01:22 PM
09/19/20 01:22 PM
|
Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,514
So. Burlington, Vt.
|
Looks like there’s a “9” in it with some tires.
That’s Andy’s old cam, right?
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
|
|
|
Re: results of added compression to 511
[Re: fast68plymouth]
#2822599
09/19/20 01:38 PM
09/19/20 01:38 PM
|
Joined: May 2009
Posts: 511 Temperance, MI
68 HEMI GTS
mopar
|
mopar
Joined: May 2009
Posts: 511
Temperance, MI
|
Looks like there’s a “9” in it with some tires.
That’s Andy’s old cam, right? it is, runs super hard!! Is that one of your grinds?
Last edited by 68 HEMI GTS; 09/19/20 01:42 PM.
68 Dart GTS "HEMI" 10.30 @ 131 pump gas street car 3780# 69 Roadrunner 511 six pack 10.92 drive to track street car
|
|
|
Re: results of added compression to 511
[Re: 68 HEMI GTS]
#2822605
09/19/20 01:49 PM
09/19/20 01:49 PM
|
Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,514
So. Burlington, Vt.
|
If it’s the 264/268-108....... then yes, it is.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
|
|
|
Re: results of added compression to 511
[Re: fast68plymouth]
#2822612
09/19/20 02:00 PM
09/19/20 02:00 PM
|
Joined: May 2009
Posts: 511 Temperance, MI
68 HEMI GTS
mopar
|
mopar
Joined: May 2009
Posts: 511
Temperance, MI
|
If it’s the 264/268-108....... then yes, it is. I thought I might be, damn good running cam.
68 Dart GTS "HEMI" 10.30 @ 131 pump gas street car 3780# 69 Roadrunner 511 six pack 10.92 drive to track street car
|
|
|
Re: results of added compression to 511
[Re: Cab_Burge]
#2822644
09/19/20 03:20 PM
09/19/20 03:20 PM
|
Joined: May 2005
Posts: 1,030 ohio
67mprfan
super stock
|
super stock
Joined: May 2005
Posts: 1,030
ohio
|
Nice results definitely started making steam in 2nd half of the track
71 demon stock stroke 440/indy ez-1 running 10.10 @ 132.14 mph in the 1/4 and 6.36 @ 107.46 mph in the 1/8 not in the same weekend but It did it then I sold it. 67 Belvedere that worked it's way in the 10's
|
|
|
Re: results of added compression to 511
[Re: mopar dave]
#2822696
09/19/20 07:06 PM
09/19/20 07:06 PM
|
Joined: May 2009
Posts: 511 Temperance, MI
68 HEMI GTS
mopar
|
mopar
Joined: May 2009
Posts: 511
Temperance, MI
|
Nice and congrats. Runs great on pump gas. What's the duration at .200 and what's the lobe lift on that cam? Thanks Thanks! I also had a mismatched wood carb spacer on it just to keep heat off the carb. Need to find one that fits the cloverleaf.
Last edited by 68 HEMI GTS; 09/19/20 07:13 PM.
68 Dart GTS "HEMI" 10.30 @ 131 pump gas street car 3780# 69 Roadrunner 511 six pack 10.92 drive to track street car
|
|
|
Re: results of added compression to 511
[Re: mopar dave]
#2822830
09/20/20 09:35 AM
09/20/20 09:35 AM
|
Joined: Jan 2003
Posts: 4,296 Chicago, IL
TonyS451
master
|
master
Joined: Jan 2003
Posts: 4,296
Chicago, IL
|
Very nice improvement and congrats on the new bests! Did you change pistons for the compression increase?
2 kids and a dog
|
|
|
Re: results of added compression to 511
[Re: mopar dave]
#2823568
09/22/20 10:39 AM
09/22/20 10:39 AM
|
Joined: Dec 2006
Posts: 1,178 Indy
FlyFish
super stock
|
super stock
Joined: Dec 2006
Posts: 1,178
Indy
|
e85 is awesome. I've been running it for years on my small block street/race car. 13:1 compression Eddy head motor, runs 10.19 at 130. If I recall corretly, my car picked up a little over a tenth when I made the switch to e85 on my old 10.8:1 compression small block.
67 Barracuda street car, 408, e85, 1.38 60', 6.44 @105.9 in the 1/8 mile, 10.19 @130.5 in the 1/4...so far....
|
|
|
|
|