Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
OPEN 1" SPACER VS. 4-HOLE 1" SPACER #1066116
08/30/11 09:53 PM
08/30/11 09:53 PM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
L
Labratt Offline OP
Good Ol Randy B!
Labratt  Offline OP
Good Ol Randy B!
L

Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
Just found a 4-hole phenolic spacer in one of my drawers...and replaced it for my 1" open spacer. My 440 uses a M-1 single plane with a 950 Holley HP. Will this spacer give a noticable improvement in low-end torque? I always heard they work better than an open design...on a HEAVY(3500 lb.) street car! Can I get your opinions and experiences on this? Thanks in advance! Randy B. BTW...the cam is a 262/266 @ .050...620 lift,solid flat tappet...converter is a 9.5" Dynamic that flashes to 4500rpm

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Labratt] #1066117
08/30/11 10:07 PM
08/30/11 10:07 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline
Too Many Posts
383man  Offline
Too Many Posts
3

Joined: Jan 2003
Posts: 27,421
Balt. Md
Thats what they say Randy. I ran a 1" 4 hole spacer on my old 440 that had the single plane Holley Street Dominator intake. It seemed to work good as I had a best 60 of 1.57 and best et of 11.49. I never compared it to an open spacer though. I am using a 1" open spacer now with my dual plane Indy intake and it feels strong. Ron

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Labratt] #1066118
08/30/11 10:09 PM
08/30/11 10:09 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline
master
VernMotor  Offline
master

Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
Well you now have yours set up like mine
seems to work good for me.

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Labratt] #1066119
08/30/11 10:12 PM
08/30/11 10:12 PM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
master
Crizila  Offline
master

Joined: Oct 2003
Posts: 7,506
Az
I run them both. 1" 4 hole tapered Wilson in to a 1" open. They sit on a Victor 340. I know a 4 hole will improve the signal to the carb - could be better for street driveability. This is just my opinion, but the larger you can make the plenum and the farther you get the carb from the port runners ( within reason on a single plane manifold ) the more even the fuel distribution will be.

6802904-eddie340.jpg (566 downloads)

Fastest 300
Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Crizila] #1066120
08/30/11 10:19 PM
08/30/11 10:19 PM
Joined: Jun 2003
Posts: 9,225
Charleston
S
sixpackgut Offline
Drag Week Mod Champion
sixpackgut  Offline
Drag Week Mod Champion
S

Joined: Jun 2003
Posts: 9,225
Charleston
run both if you can


Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram

performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: sixpackgut] #1066121
08/30/11 11:50 PM
08/30/11 11:50 PM
Joined: Jan 2003
Posts: 4,002
Joplin, Mo
R
rt66jim Offline
master
rt66jim  Offline
master
R

Joined: Jan 2003
Posts: 4,002
Joplin, Mo
On my 416 with a PF950HP the 4 hole was worth .1 and 1.5mph. Victor W2 intake. Jim

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: rt66jim] #1066122
08/31/11 12:19 AM
08/31/11 12:19 AM
Joined: Jun 2003
Posts: 9,225
Charleston
S
sixpackgut Offline
Drag Week Mod Champion
sixpackgut  Offline
Drag Week Mod Champion
S

Joined: Jun 2003
Posts: 9,225
Charleston
Quote:

On my 416 with a PF950HP the 4 hole was worth .1 and 1.5mph. Victor W2 intake. Jim




Damn!


Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram

performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: rt66jim] #1066123
08/31/11 12:36 AM
08/31/11 12:36 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Quote:

On my 416 with a PF950HP the 4 hole was worth .1 and 1.5mph. Victor W2 intake. Jim




Did you try any other types (open or stacking a open
and a 4 hole)... also where did it pick up... was it
in the 60'.... was that a 1" or 2"

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Labratt] #1066124
08/31/11 01:30 AM
08/31/11 01:30 AM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,007
Bend,OR USA
Take both of them to the track and test them, the old butt dyno may not be as accurate as the time slips are


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Cab_Burge] #1066125
08/31/11 10:21 AM
08/31/11 10:21 AM
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
B
BradH Offline
Taking time off to work on my car
BradH  Offline
Taking time off to work on my car
B

Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
Quote:

Take both of them to the track and test them...



Yep... and they might work best w/ slightly different jetting, too.

Randy - Are you going back to the track over the Labor Day weekend?

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Cab_Burge] #1066126
08/31/11 10:28 AM
08/31/11 10:28 AM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
L
Labratt Offline OP
Good Ol Randy B!
Labratt  Offline OP
Good Ol Randy B!
L

Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
Cab...that's the plan! I'm heading to the track on the 23rd...or 24th....MAYBE both days!First,by themselves,then, as Raff and a few others have suggested...I'll try stacking them,with the open spacer on the bottom. Brad..the wife and I are heading up north to visit her relatives over the week-end.Maybe I'll finally get some fishing in! I'm HOPING to get 2 days in a row of testing in,Sept.23..and 24!

Last edited by Labratt; 08/31/11 10:34 AM.
Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Labratt] #1066127
08/31/11 10:53 AM
08/31/11 10:53 AM
Joined: Jan 2003
Posts: 17,801
S.E. Michigan
ZIPPY Offline
I Live Here
ZIPPY  Offline
I Live Here

Joined: Jan 2003
Posts: 17,801
S.E. Michigan
Definitely worth trying especially stacking them up, it's sort of a poor man's super sucker.

Mine picked up around 18hp with the right spacer combo, back when I had a street dominator 383 intake. But that was 3" worth of spacers which told me the manifold was lacking something.

The victor 383 intake was better to begin with and it only picked up 7hp with the addition of an open spacer.....
a 4 hole spacer did absolutely nothing. It did not even change A/F ratio noticeably.

It's worth testing at somewhere like Jake's, so you can catch the little changes (ya know, 7, 8HP or whatever) when you come across em. It ain't much but if you got it, keep it! Myself I would have a hard time seeing 7hp on a timeslip but I am really not that good....


Rich H.

Esse Quam Videri




Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: ZIPPY] #1066128
08/31/11 11:19 AM
08/31/11 11:19 AM
Joined: Mar 2007
Posts: 3,300
Northern Indiana
Dunnuck Racing Offline
master
Dunnuck Racing  Offline
master

Joined: Mar 2007
Posts: 3,300
Northern Indiana
The right spacer can make a huge difference,when you retune for it.
When I used Vic's dialed in Pro Systems and Wilson tapered spacer on my 421,my dyno's A/F fuel numbers showed it was real close to where it should be. Taking the tapered spacer off really screwed up the A/F ratio.
Same for QF 950 and open spacer,but to a lesser degree.
Each intake/carb/spacer combination acts different and should be tuned to get the best results
Keith

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Dunnuck Racing] #1066129
08/31/11 12:35 PM
08/31/11 12:35 PM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
master
Crizila  Offline
master

Joined: Oct 2003
Posts: 7,506
Az
Personally, I think quantifying small improvements at the track is difficult at best. Just an hour between runs can cause DA, ambient air temp, track conditions, eng temps, to change your Et by a tenth. Thats where dyno testing shines. If I am looking for small improvements at the track, I rely on the MPH numbers before the ET #'s.


Fastest 300
Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: BradH] #1066130
08/31/11 12:41 PM
08/31/11 12:41 PM
Joined: Jan 2003
Posts: 5,892
Florida
Locomotion Offline
master
Locomotion  Offline
master

Joined: Jan 2003
Posts: 5,892
Florida
Quote:

Quote:

Take both of them to the track and test them...



Yep... and they might work best w/ slightly different jetting, too.






.....as well as pump squirter sizes!

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Crizila] #1066131
08/31/11 12:42 PM
08/31/11 12:42 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Quote:

Personally, I think quantifying small improvements at the track is difficult at best. Just an hour between runs can cause DA, ambient air temp, track conditions, eng temps, to change your Et by a tenth. Thats where dyno testing shines. If I am looking for small improvements at the track, I rely on the MPH numbers before the ET #'s.




MPH is what the engine is making(power wise) ET is what
the chassis is doing

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Labratt] #1066132
08/31/11 02:20 PM
08/31/11 02:20 PM
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
B
BradH Offline
Taking time off to work on my car
BradH  Offline
Taking time off to work on my car
B

Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
Is that picture the Bigs-modified "950" you borrowed? That looks like an old 850 w/ the choke horn cut off and blended. Can you post a picture of the carb you're testing against my Demon?

You're not testing until the 23rd or 24th??? "Dude, where's my car(b)?"

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: BradH] #1066133
08/31/11 03:31 PM
08/31/11 03:31 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Quote:

Is that picture the Bigs-modified "950" you borrowed? That looks like an old 850 w/ the choke horn cut off and blended. Can you post a picture of the carb you're testing against my Demon?

You're not testing until the 23rd or 24th??? "Dude, where's my car(b)?"




I'm sure thats my 850 in the pic(looks like it)
but he brought it back so I could put it on my new
street engine

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: Crizila] #1066134
08/31/11 09:31 PM
08/31/11 09:31 PM
Joined: Feb 2005
Posts: 4,309
Prospect, PA
BSB67 Offline
master
BSB67  Offline
master

Joined: Feb 2005
Posts: 4,309
Prospect, PA
Quote:

Personally, I think quantifying small improvements at the track is difficult at best. Just an hour between runs can cause DA, ambient air temp, track conditions, eng temps, to change your Et by a tenth. Thats where dyno testing shines. If I am looking for small improvements at the track, I rely on the MPH numbers before the ET #'s.




This is true for me and my car. Although I track and record considerable information, I'm just not consistant enough. I always use a weather station, and repeat the change to confirm. I would say that half the time I cannot repeat the improvement that I thought I found.

Re: OPEN 1" SPACER VS. 4-HOLE 1" SPACER [Re: BSB67] #1066135
08/31/11 11:26 PM
08/31/11 11:26 PM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
L
Labratt Offline OP
Good Ol Randy B!
Labratt  Offline OP
Good Ol Randy B!
L

Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
Little info to report about the 4-hole spacer! Threw it on the 440 before taking it down to the Harper Cruise tonight...the motor didn't seem to like it at lower RPM! It was stumbling a bit...up to around 1800-2000 rpm. Maybe it didn't like the 35 squirter...where the 35 works good with the open-hole spacer! Not really sure! What do you guys think? BTW...Brad..Raff's correct!..that's his modified 850DP in the pic. I'll post one of Russ Dudek's 950HP.

Page 1 of 2 1 2






Powered by UBB.threads™ PHP Forum Software 7.7.1