windmill

iTrader: (4)

im going thur night to test a reg 4 hole 1 inch spacer on my car to see if i can get it leave and run faster,, this is at my home track... it should be in the low 50's thur night. i'm still running 38 deg timing across the board.. i have a 800dp hp. with 75 front and 83 rear,,, might go up 2 sizes front and rear for thursince it will be cooler weather... any suggestions that i could try... or input,, always love input. my times is in the sig

slinginrods

i think it was hot rod mag,anyhow they tested a 5.3 with carb conversion and used diff intakes and carbs.they also tested various spacers and had no change with any of them at all.sounds strange to me but the dyno sheets showed no loss or improvement with an open and a 4 hole 1 inch spacer.but now if that spacer happens to let some nitrous in like mine will then you will deff see some improvement .nevertheless let us know how it does.should be interesting

streetknight2

iTrader: (10)

I use a HVH Super Sucker 1". But never tried without it. May need to do that.

ZONES89RS

iTrader: (25)

My custom 2 inch I ported to mock a hvh picked up 2 tenths.

windmill

iTrader: (4)

ill post up the runs here,,, im going to jet it up 2 sizes front and rear then ill get a base line then change to the spacer,,, my car is real good about running the same so it will be interesting....

speedtigger

iTrader: (16)

I had no appreciable gains on my car with any spacer including the super sucker. It actually lost a little with the 4 hole.

stinkybutt

Don't change the jetting. Unless you already know where the A/F is. A 4 hole spacer should give a better booster signal, there-for richen the A/F. The same can happen when going from a single plane(victor, victor jr) to a dual plane(performer, performer rpm). On the dyno we have had to go down 4 jet #'s to keep the same A/F when going from down leg to annullar boosters. Same idea, the annullar boosters creat a better signal and draw more fuel.
Just some ideas for you to think about.

Aleck

windmill

iTrader: (4)

my car is just a track car,,, i just a while ago changed the jets. i went up 3 sizes since it's going to be cool weather for tmorrow(50's)... only dyno i use is the 1/8 mile one,,,im looking for some 6.8's with the spacer and hope for some 1.42 or 3 60fts..im still leaving at 2000 rpm's. this is a bone stock motor with just a carb change.. im still going to use the 38 deg timing since it like it...also this is on 93 pump gas too...

windmill

iTrader: (4)

well the space slowed it down with the extra jets too
with spacer fastest went 1.480 60ft 6.972
w/out spacer it went back to what it runlast week 1476 60ft 6.940
i dont think the extra jets help any too i ran it on the 2 barrel it ran 1.51 60ft at 7.12 then backed it up with another 1.51 at 7.13

Dragtruck2

iTrader: (2)

I put a 2 inch 4 hole on mine at the track, ET and mph stayed the same but throttle response was better just driving it around.