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Gasser Straight Axle, Chevy Spindle and Brake Kits, 56-1/2 Hub-to-Hub

Gasser Straight Axle, Chevy Spindle and Brake Kits, 56-1/2 Hub-to-Hub
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Gasser Straight Axle, Chevy Spindle and Brake Kits, 56-1/2 Hub-to-Hub

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Details

Reviews (4)

Q & A (22)

What's in the Box

Info

These kits include our gasser straight front axle, semi-elliptical springs, spindles, king pins, steering arms, tierod kit, brake kit, and hardware. Choose either 5 on 4-1/2" or 5 on 4-3/4" bolt pattern with standard brake kit or Wilwood brake kit. Standard brake kits use new rotors and GM metric style calipers. Brake lines not included. Shocks not included, but shock mounts are included. Assembly required.

Gasser Info (PDF)

Note: Wilwood brakes increase hub-to-hub width by 1/2".

910-3948 Instructions (PDF)

Item Details

49-54 Chevy Spindles, Specify bolt pattern,
48" Wide axle - 56-1/2" hub to hub.

Notes

  1. If using steel wheels with Wilwood kit, you will also need to purchase (2) steel shims part 835-3007500. These shims will prevent steel wheels from galling the aluminum hub.
  2. Rubber brake hoses generally cannot be adapted to Wilwood calipers. The caliper inlet fitting is a 1/8-27 NPT. The preferred method is to use steel adapter fittings at the caliper, either straight, 45 or 90 degree and enough steel braided line to allow for full suspension travel and turning radius, lock to lock.

Specs

Gasser Kit w/ "Chevy" Spindles

  • Leaf springs, 31-1/4" long x 1-3/4" wide
    • 6 leaf, 1/4" thick
    • 400 lbs/inch spring rate
  • Chevy-style spindles (forged steel)
    • Modeled after the 1949-54 Chevy passenger car spindle

"Chevy" Spindle Standard Brake Kit

  • 5 x 4-1/2" Ford/Mopar bolt pattern
    • 9-1/4" vented iron rotor, .890" thick
    • Hub flange (hat) diameter - 5.74"
    • 1/2" Fine wheel studs
    • GM Metric '78-'88 calipers, 2-1/2" piston
    • 7/16"-20 banjo bolt to AN-3 line adapter kit
  • 5 x 4-3/4" GM bolt pattern
    • 9-1/4" vented iron rotor, .890" thick
    • Hub flange (hat) diameter - 5.74"
    • 7/16" Fine wheel studs
    • GM Metric '78-'88 calipers, 2-1/2" piston
    • 7/16"-20 banjo bolt to AN-3 line adapter kit

"Chevy" Spindle Wilwood Brake Kit (must use 15"+ wheels)

  • Forged Dynalite 4-piston Calipers
  • 10.75" x .810" Ultralite HP 30 Vane iron rotors
  • Wilwood Polymatrix-D Pads - very high cold friction, high fade/glaze resistance to periodic heat
  • Lightweight anodized aluminum Pro Street hubs
  • 1/2"-20 wheel studs

Customer Reviews

Rated 5 out of 5 by 4 reviewers.
RATING BREAKDOWN
4 reviews
5 Stars
4
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

n/a
Verified Reviewer
lake geneva, wi

very ease

July 11, 2016
bought this kit for my '37 oldsmobile business coupe. the width of my frame rails are 34". this kit fit perfectly & allowed more than enough turning radius. I called to order this; the service rep allowed me to switch the straight axle with a 4" drop tube...the spring perches fit dropped tube bends of the axle square & flat even with a frame width of 34". the kit was absolutely complete & very easy to install...it doesn't get any easier. hands down the best kit out there. everything was very good quality; thick hangers, perches, and hardware. great welds on the axle/king pin boss. will definitely buy another kit from these guys... thanks again!
Yes, I recommend this product.
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the real deal
Verified Purchaser
Verified Reviewer
indiana

perfect

July 28, 2015
Great kit and all is included. Speedway even swapped out a drip axle for me
Yes, I recommend this product.
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organgrinder
Hot Springs, AR, USA

complete and easy to install

September 19, 2013
the kit was all i needed to put my car on the road. very easy install and has been very dependable for several yrs now. will use this on all the gassers i have lined up to build. the organgrinder
Yes, I recommend this product.
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studebuddha
Verified Purchaser
oelwein,iowa

nice kit

June 16, 2012
this is a very simple kit,easy to use.it has been installed onto a 1932 studebaker sedan with no problems whatsoever.the only thing i would like to see is a choice of straight or dropped axles with this kit.otherwise,very nice kit.
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

22 questions : 23 answers

1 answers

I have a 69 elcamino, hub to hub measures 60". Will the 58 1/2" kit work? Do you have a 60" kit? I plan on using the better brake system you have available!

HRGXXX
Harrisburg, NC, USA
January 24, 2015

I have a 69 elcamino, hub to hub measures 60". Will the 58 1/2" kit work? Do you have a 60" kit? I plan on using the better brake system you have available!

Answers

January 28, 2015
EricM
The 58 1/2" hub to hub width will move the front wheels inward 3/4" per side. If you are ok with that from a looks standpoint then it should work fine since the gasser kit will raise the front end up enough that tire clearance shouldn't be an issue. If you plan to use the Wilwood brakes that will add another 1/2" of width so with a Chevy axle kit such as 9103950 you would end up at 59" hub to hub. If you plan to use the stock style disc brakes then we would suggest a Ford axle kit such as 9103550 for the larger brake rotor size. That kit with standard brakes will give you 58 1/4" hub to hub. Also if you want we can build a custom length axle to get your hub to hub right at 60" like the original. Specify that you want this when ordering and we can do a custom axle length for an extra $25.
1 answers

what is the right way to measure from hub to hub

rustie
nc
December 13, 2014

what is the right way to measure from hub to hub

Answers

December 15, 2014
EricM
Remove the wheels from you vehicle and measure from left side hub to right side hub where the wheel bolts on. It's usually easiest to drop a straight edge down so that your tape measure can be ran across the vehicle without hitting the frame or suspension.
1 answers

Hi I am building a 65 comet and I would like to know roughly how much this kit will lift the front? and can you get it with a drop axle? Thanks

jlash74
August 18, 2014

Hi I am building a 65 comet and I would like to know roughly how much this kit will lift the front? and can you get it with a drop axle? Thanks

Answers

August 20, 2014
EricM
These gasser axle kits raise the front between 8” and 10”, depending on several things such as the weight of the vehicle and wheel/tire combos. We do offer dropped axles, 4” or 6” drop. However, these are only available 48” wide, so that would deliver a track width of 56½”.
1 answers

Hi there,how much does this kit weigh?

AB74
Australia
July 17, 2014

Hi there,how much does this kit weigh?

Answers

July 17, 2014
EricM
This kit ships in six boxes totaling 160 pounds.
1 answers

Steering I want to use a vega steering box with this Gasser Straight Front Axle Chevy spindle kit. I need a double tie rod arm as in the Ford spindle kit according to these instructions.. Do you have a Ford kit double tie rod arm that fits the Chevy spindle??

itsagas
Columbius
January 27, 2014

Steering I want to use a vega steering box with this Gasser Straight Front Axle Chevy spindle kit. I need a double tie rod arm as in the Ford spindle kit according to these instructions.. Do you have a Ford kit double tie rod arm that fits the Chevy spindle??

Answers

January 28, 2014
EricM
With the Chevy spindle gasser kit the tie rod and drag link utilize a single hole steering arm with an adapter stud. Tie rod is below the arm and the drag link is above the arm on the adapter stud and goes between the spring and the frame. Pictures of this are shown on page three of the instructions which are available here: http://static.speedwaymotors.com/pdf/916-3903.pdf
1 answers

How does the suspension work with the solid mount steeering box? Using the chevy kit, how does the suspension work without binding the pitman arm? The ford kit is self expanatory but I don't see how the chevy kit will allow for the front end to move up & down.

itsagas
Columbus, Mt
January 24, 2014

How does the suspension work with the solid mount steeering box? Using the chevy kit, how does the suspension work without binding the pitman arm? The ford kit is self expanatory but I don't see how the chevy kit will allow for the front end to move up & down.

Answers

January 27, 2014
EricM
This kit works exactly the same no matter if it is a Ford or Chevy kit. There is a steering arm bolted to each spindle with a tie rod that connects the steering arms. You will then have a drag link that connects the pitman arm on your steering box to the right hand spindle. Here is a diagram explaining the steering of this type of suspension system: http://www.speedwaymotors.com/suspension-cross-vs-traditional-steering.dlp
1 answers

Spring Rate The front of my car will weigh only 1400 pounds. These springs are rated at 400 lbs/inch. If I remove the bottom three leaves, what would my spring weight be? Would the main spring still have some travel & not be flat? Thanks.

itsagas
Columbus, Mt
January 18, 2014

Spring Rate The front of my car will weigh only 1400 pounds. These springs are rated at 400 lbs/inch. If I remove the bottom three leaves, what would my spring weight be? Would the main spring still have some travel & not be flat? Thanks.

Answers

January 20, 2014
EricM
Each spring in this gasser kit is good for about a 2500 pound car so unless you remove a leaf or two the ride would be extremely firm and not provide much suspension travel. The number of leaves to be removed is up to the individual customer for the ride height and quality of ride you prefer. Sorry we do not have a listing of spring rate per leaf. That is usually more of a trial and error method. We apologize for the inconvenience.
2 answers

What do you suggest for a steering stop? Do you even use one? I have you straight axle kit installed on my '63 Chevy II and I am running a chevy Vega steering box. My front wheels turn really sharp, almost touch the leaf springs with 15 x 4 wheels. I always thought you didn't want to use the steering box for the stops. Thanks for any help,Brian

axelnut1
Evansville,IN
September 17, 2013

What do you suggest for a steering stop? Do you even use one? I have you straight axle kit installed on my '63 Chevy II and I am running a chevy Vega steering box. My front wheels turn really sharp, almost touch the leaf springs with 15 x 4 wheels. I always thought you didn't want to use the steering box for the stops. Thanks for any help,Brian

Answers

September 30, 2013
Santo
Weld F/R stop tabs on both L/R kingpins to limit the spindle travel Here are photos of the Speedway gasser axle on the AAGS Olds I am building and the 1965 Chevy II Gasser up for straight axle this winter. Santo.
September 18, 2013
Jason
Originally the I beam axles from major automobile manufacturers had steering stops built into the area of the kingpin boss. We even offer the kingpin cross bolt spindle stop nut number 9101006 for those I beam applications. Most tube axles retain the kingpins with a set screw in lew of cross bolt. Some customers have designed stops on the steering arms or the axle as they desire but this is entirely up to the customer or builder.
1 answers

will this kit work on a 1/2 ton pick up truck? the truck has a blown 440 with iron heads

whiteboy
August 07, 2013

will this kit work on a 1/2 ton pick up truck? the truck has a blown 440 with iron heads

Answers

August 08, 2013
Jason
Kit number 9103948 would give you 56 ½ track width or bolt surface to bolt surface that the wheels will bolt to. Compare this to your wheel and tire combination to see where they will fit in the fenders. For the heavier applications you may want to go with the Ford spindle kit as they come with 11” rotors for better stopping power under kit number 9103548.The springs are heavy enough for a 5000 pound rod and in many cases customers remove a leaf or two depending on the weight of their vehicle.
1 answers

Will this kit fit my 56 chevy sedan? I would like to install a gasser kit on my 56. I will use this car for some mild drag racing.

RevGreg
Buckhannon wv
July 13, 2013

Will this kit fit my 56 chevy sedan? I would like to install a gasser kit on my 56. I will use this car for some mild drag racing.

Answers

July 15, 2013
Jason
Our gasser axle kits such as 9103948 work on just about every application including your 56 Chevy. The kit comes with 9 ¼” rotors and if you desire the larger 11 inch rotors we suggest ordering the Ford spindle kit number 9103548 and bolt pattern for the wheels can still be of choice of 4 ½ or 4 ¾” on 5 bolt pattern. The 48” axle nets a 56 ¼ to 56 ½” track width and comparing this to the wheel and tire combination you plan on running will help you determine if the 48 or 50” would put the tires in your desired location in relation to the edge of the fender. The track width is hub face to hub face where the wheels will bolt on.
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