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Old 07-04-2004, 11:52 AM
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Front coil springs too long.

I installed heavy duty coil springs on my 1937 chevy truck. It has a Heidts mustang ii crossmember but the springs are so potent they are preventing the suspension to settle. Even with the 403 ci mounted with a th 400.

Any suggestions from you folks would be appreciated. Thanks.

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Old 07-04-2004, 02:38 PM
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Strong springs

Just some food for thought: I put 1960 348 springs under a 57 chevy. I had to cut one round off them to get them in. With a 327 it sat what i called level, ( the bottom of the car body was even with the canter of the axle's. I used a main spring with the ends cut off in the rear next to the main. It sat up nice, was firm, but not stiff. It looks like you got yours in, so I assume its to stiff.
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Old 07-04-2004, 03:17 PM
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It was a difficult task.

I really had to work with the spring compressers-just right. My shocks are now too short and the strut rods aren't going to work. I wonder if the lower control arms should be parallel to the crossmember.
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Old 07-04-2004, 03:47 PM
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springs

I'm not formul. with your axle assm. It looks like the springs are leaning outward, I don't think that good. I put a 76 mustang front axle under a 40 chevy sedan, but I used the hold assm. and welded it in, the shock tourer weren't straight, but i was told to get the lower arm level front to rear. I didn't change anything on the front zep shocks rotors and calipers. I don't remember who'm friger the shocks, but they weighted the car and measured the length for the shocks. the len. was decided to be half way between fully extended and collapsed. Sorry but that about all I know it, if three's anything i'ken do to help, just hollow.
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Old 07-04-2004, 04:08 PM
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I think you need lighter springs. I put a M. II kit under a 39 Chev sedan. The coils were marked 4cyl. as in replacement for a 4 cyl. Mustang. With my motor and trans. in the frame it set better than you'res by far, and with body on, alot better. When it is fully finished , I think it'll be perfect.
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Old 07-04-2004, 04:23 PM
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The springs are bowed quite a bit.

The instructions that came with the cross member(Hiedts) said to make the lower control arms parallel to cross member, attach strut rods and assemble strut brackets to strut, and then weld brackets in place. When considering that, perhaps the control arms should be practically level with the ground but that will lower the front end a whole bunch.
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Old 07-04-2004, 04:41 PM
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You're using the wrong springs. For almost any application using a Mustang II IFS you should use no heavier than the 6 cyl. springs even for a big block with air. I have the 4 cyl. w/air springs in my hemi powered '53 Chevy pickup and it sits just right. I also used the 4 cyl. springs in my '41 BBC pro-street car and actually had to cut a half coil out to get the lower "A" arms level.

Change to the 4 cyl. w/air Mustang II springs and you'll be fine. By the way, if you call Heidts that's exactly what they'll tell you. Been there done that.

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Old 07-05-2004, 08:23 AM
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Post shows up twice

Your post shows up twice and I didn't catch it before I answered it, see the other post I gave you directions for something that might help you out.

David
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