[Tim Corcoran]

What spacer have you found to produce the most power on a 467 with 330 edelbrock heads on a Victor with a 1050 dominator on top?

[steve25]

Are you running enough valve lift to access all of that 330 cfm?

[srmmmm]

For what it's worth, ECR runs a 1 inch Wilson 4 into 1 spacer under a 1050CFM Holley on their TA engines for a 15 horsepower gain. They're currently producing 935 HP at 8600rpm out of 366 cubic inches.

[Dragncar]

https://polymerracingproducts.com/pr...af+Carb+Spacer

[Mike Davis]

Originally Posted by Dragncar

https://polymerracingproducts.com/pr...af+Carb+Spacer

Curious if you ever did a back to back vs your HVH?

[Tim Corcoran]

Originally Posted by steve25

Are you running enough valve lift to access all of that 330 cfm?

13:1 compression, I don't remember the exact cam specs but lift is around 650 and duration is around 265/268 @ .050 solid roller.

[Dragncar]

Originally Posted by Mike Davis

Curious if you ever did a back to back vs your HVH?

Not yet at the track. I just got it to really run the last race of last season and have not been out this year. Not sure if I will make it out either.
I have 3 different of those kinds of spacers and am going to buy a 4th.
One of them is close to my 1" Super Sucker so that will make it a easy test when I get back at it.

This guy did some dyno work and a few others have too.


https://www.youtube.com/watch?v=-nDFl9049GE&t=1253s

[steve25]

So if your running about .650” lift than at what lift is your heads rating of 330 cfm at?

Thats what I was asking, but thanks for the duration specs none the less.

[steve25]

Please note that even with the Victor and way more so with a less tall Nash type that the more spacer height you stack on the leaner the outer 4 runners will be.

Even looking at your plugs might not give any clear indication of a lean issue, but your exh temps sure will , so you really want to monitor those and if your above 1375 F at full throttle then your well on the road to detonating and the damage that such can make even in a motor of only 400 hp.

[68azbird]

1050 on top a 3 inch 4 hole spacer on top an iron head 462. Thousands and thousands of street miles no problems ever.

[Mr Anonymous]

Whether or not a spacer will do *anything* is with a fair amount of testing. We tried a few different ones during my last dyno session and the results werent spectacular. One didnt do anything and the other got us 7hp at 6800 on a 14:1 engine and 340cfm heads. It was a lot of expense and effort and not much in return.

[Region Warrior]

Originally Posted by 68azbird

1050 on top a 3 inch 4 hole spacer on top an iron head 462. Thousands and thousands of street miles no problems ever.

Awesome!
Still regret sold my 4150 flange with spacer 780 q-jet back in 90s.

[Formulajones]

Originally Posted by Tim Corcoran

What spacer have you found to produce the most power on a 467 with 330 edelbrock heads on a Victor with a 1050 dominator on top?

That's an experiment more than anything. Every engine seems to like something a little different.
Generally on the dyno Ive found single plane intakes like the 4 hole taper or super sucker or taper combo or what ever you want to call it, they have a lot of names, seems to work best and I typically will use a 1 1/2" to a 2" and find a few HP on the dyno. We've seen as much as 12 HP and as little as 4 or 5.

Dual plane intakes Ive always had best results with an open spacer.
You'll just have to try a few and see. Easier when done on a dyno rather than the track.