Carb spacer or no ?
 

Single plane application Vick Jr...930 cfm aerosol holley .what are you guys doing, YES or NO.any benefit

8-10 hp every time so if it fits sure, if you have to do any mods to the hatch don't bother, might equal .5 mph

No issues with clearance, raised hatch...1 inch or more ?

4 hole 1/2" on top of an open 1/2"..

this looks good 4 hole and open

http://www.ebay.com/itm/2-silver-SUP...xYW0zz&vxp=mtr

Never mind its in China

SB, are you still making spacers?

540 Vic Jr, 2in. vs none. I saw no difference with a 4 hole or combination. Regular 2 inch open.

Identical engines one with 4 hole one with super sucker 4 hole.
SS made +6hp/+12tq, that engine consistently pulls 50 rpm more than other. Does it make a difference in speed, prob not, but mid range cruise (where I spend most time) is probably more efficient based on tq increase.
I'm going to replace standard spacer with SS in the spring to verify results.

Am I reading that right that the red line is with the spacer making less power?

No, the better blue line is spacer and is making more power. The printer was running out of ink so the one line is traced over to darken it.

To me it would appear less power without spacer.

Did you try a 1" by chance

To answer OP's question though I believe in all reality every application/build will be different. All you can do is try it and and if you don't see any speed gains I wouldn't bother with it.

We tried a 1 in. It wasn't as good with that combo. I don't think I have a printout of it.