[curley8788]

How fast have you gone with your vacuum secondary small block?

please list the combination, what spring you ran in the carb, and what the car weighs.

 

[mr 4 speed]

we have turned 101-102 MPH and ran 13.40's with a small block Olds 355...3310 had the short yellow spring.
Cam was a Bullit grind 233/241 @ .050 .499/.499 110 LSA 10" 3800 stall and 3.73 gears
Car was about 3800 lbs. with a 300 lb. driver

 

[onovakind67]

Not a small block, but I went 9.77 @ 145 in my BBC bracket FED. I used a stock 3310 Holley on a 454 station wagon motor, Crane Blazer cam, Basset Headers, 'Glide and a 3.91 rear axle.

 

[wes migletz]

Car weighs about 3200#.

1962 327/300 HP engine (now 395" give or take)
3.85" stroker crank, 9.5:1 compression,
1962 #461X heads w/ 2.02/1.60 valves, with a little clean-up work
Camonics reground solid F/T cam .520" I/E (with a 1.6 rocker) 236* @ .050", 284* adv, on a 112* LS
Wieand Airstrike
Carb Shop 3310 750 vac sec with choke tower milled (tall yellow spring, jetted 74/82, no power valve)
700R4, 1800 stall, 3.70 posi, 235/70/R15 Radial TAs
Best 1/4 mile 13.17 @ 108.XX at California Speedway

With a low rise Wieand 8120 intake, and a 3.36 Posi, car went 13.37 @ 107.60 at Beechbend Race Park.

I think the elevation was higher at Californai Speedway. Temps were in the 90s both days. CA Speedway hot and dry. Beechbend hot and humid.

Wes

 

[curley8788]

Car weighs about 3200#.

1962 327/300 HP engine (now 395" give or take)
3.85" stroker crank, 9.5:1 compression,
1962 #461X heads w/ 2.02/1.60 valves, with a little clean-up work
Camonics reground solid F/T cam .520" I/E (with a 1.6 rocker) 236* @ .050", 284* adv, on a 112* LS
Wieand Airstrike
Carb Shop 3310 750 vac sec with choke tower milled (tall yellow spring, jetted 74/82, no power valve)
700R4, 1800 stall, 3.70 posi, 235/70/R15 Radial TAs
Best 1/4 mile 13.17 @ 108.XX at California Speedway

With a low rise Wieand 8120 intake, and a 3.36 Posi, car went 13.37 @ 107.60 at Beechbend Race Park.

I think the elevation was higher at Californai Speedway. Temps were in the 90s both days. CA Speedway hot and dry. Beechbend hot and humid.

Wes

we have turned 101-102 MPH and ran 13.40's with a small block Olds 355...3310 had the short yellow spring.
Cam was a Bullit grind 233/241 @ .050 .499/.499 110 LSA 10" 3800 stall and 3.73 gears
Car was about 3800 lbs. with a 300 lb. driver

u guys have the check ball in or no?

 

[mr 4 speed]

checkball was in on the Olds combo
We recently tested with and w/o one...didn't make a difference 60 ft, ET or MPH wise in a 3940 lb. 69 SS w/driver

 

[curley8788]

checkball was in on the Olds combo
We recently tested with and w/o one...didn't make a difference 60 ft, ET or MPH wise in a 3940 lb. 69 SS w/driver

ok cool. so was the white spring too much for that olds motor?

 

[wes migletz]

u guys have the check ball in or no?

Running the check ball on mine. I have tried it withour it. I am considering swapping back to a purple spring to see if the car spins less...

 

[mr 4 speed]

ok cool. so was the white spring too much for that olds motor?

never tried the white...only the yellow

 

[animal69]

High10s with a 301, 780cfm, Muncie M20, 4.56 rear and 2000 lb. model A. This was about 40 years ago. I wish I'd kept that car.

 

[68chevelle533]

My 70 chevelle went high 11.90s with a 3310 with the 405sbc motor in my sign. I tried using a hp950 and they both ran within a couple of hundreds and the same mph in back to back runs.

 

[Jebchevelle]

Car weighs about 3200#.

1962 327/300 HP engine (now 395" give or take)
3.85" stroker crank, 9.5:1 compression,
1962 #461X heads w/ 2.02/1.60 valves, with a little clean-up work
Camonics reground solid F/T cam .520" I/E (with a 1.6 rocker) 236* @ .050", 284* adv, on a 112* LS
Wieand Airstrike
Carb Shop 3310 750 vac sec with choke tower milled (tall yellow spring, jetted 74/82, no power valve)
700R4, 1800 stall, 3.70 posi, 235/70/R15 Radial TAs
Best 1/4 mile 13.17 @ 108.XX at California Speedway

With a low rise Wieand 8120 intake, and a 3.36 Posi, car went 13.37 @ 107.60 at Beechbend Race Park.

I think the elevation was higher at Californai Speedway. Temps were in the 90s both days. CA Speedway hot and dry. Beechbend hot and humid.

Wes

WOW with your Mph you should be running high 12's. that said I ran 12.80 @ 103mph at dragway 42 with a 600cfm 4010 vac sec holley with stock jets and stock spring and stock 30cc acell pump. on an open plane intake see sig to see best N/A time with same carb and no other changes at norwalk or summit Motorsports park as it is called now. enough said.

 

[aukai]

I had a 67 Camaro 331" 4 spd 5.57 gears run 12.00 with no traction at 117 mph shifting at 7500 I thought I was bad back then. Now I know I'm bad wish I was younger

 

[trmnatr]

I had a 67 Camaro 331" 4 spd 5.57 gears run 12.00 with no traction at 117 mph shifting at 7500 I thought I was bad back then. Now I know I'm bad wish I was younger

WOW, 5.57 gears You got my beat there. Im 5.38's with an automatic - 5.57's with a 4 speed would be fun

 

[Jason Snyder]

65 nova 355 .11.1 , 236 @.050 .510 106lsa . old 3310 with yellow spring, no check ball . 4.11 gears 3500 converter 3325lbs with driver . = 11.90 @ 115 mph

 

[dirtlips408]

Combo in sig.....With the 3310 Holley I went 12.04 at 112.3. I used the second lightest spring with the check ball/stock pump cam. I did a rear metering block conversion and jetted it 74P/84S.

 

[kettbo]

Ron,
Sounds like it is well dialed-in

 

[Rich-L79]

Bone stock L79 in a '65 Chevelle, 3.31 gears: 14.93 @ 91mph.

I noticed no difference with or without the check ball, Holley very much strongly suggests NOT removing the check ball. I was running the stock spring when I logged the time slip noted above, I've since switched to the yellow spring. I don't know if that would net any better ET, but it feels smoother on the street.

 

[dirtlips408]

Ron,
Sounds like it is well dialed-in

Yeah...its a great working little carb. I might pull my Prosystems HP950 off for street use and swap my 3310 back on. It gets better milage and feels better in the lower rpm's....2000-2500 range. But when its track time I will put Mr HP950 back on for max ET.