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02-11-2014, 05:10 PM
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#1 |
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Registered User
Join Date: Jun 2012
Location: springfield pa 19064
Posts: 63
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springrates/ifs
Buying a Speedway ifs with coil overs and 2in. dropped spindles, getting conflicting info on spring rates, don't want to cut springs, want low look smooth ride. do different manufacturers have different characteristics:spring height/rates.I'm putting a 307 /turbo 350 maybe ac latter. Thanks
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02-11-2014, 06:03 PM
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#2 |
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Registered User
Join Date: Jun 2012
Location: Southern Iowa
Posts: 944
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Re: springrates/ifs
I recommend you read this discussion thread, before automatically ordering the dropped spindles.
http://67-72chevytrucks.com/vboard/s...d.php?t=615620
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Jimi J from I-Oh-Way '57 Panel 3105 Met this deer... Roof Swap on my Panel Jim's Bread Truck |
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02-11-2014, 09:07 PM
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#3 |
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Registered User
Join Date: Jan 2012
Location: Motown
Posts: 7,680
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Re: springrates/ifs
you don't say what truck you are building (look at the link in my sig)
but dropped spindles on my 58 would make it un-streetable
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cool, an ogre smiley  Ogre's 58 Truk buildhow to put your truck year and build thread into your signature shop air compressor timer |
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02-11-2014, 11:46 PM
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#4 |
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Registered User
Join Date: Jun 2012
Location: springfield pa 19064
Posts: 63
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Re: springrates/ifs
Talked to speedway they said their kit with stock spindles will lower truck 3 to 4 in. and use 700 lbs. springs. that's what I want,.going with their recommendation .Thanks for heads up
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02-12-2014, 08:18 AM
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#5 |
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Registered User
Join Date: Oct 2010
Location: West New York, NJ
Posts: 65
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Re: springrates/ifs
700 lbs ???? Call them back---should be more like 375 lbs
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02-12-2014, 08:24 AM
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#6 |
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Registered User
Join Date: Oct 2010
Location: West New York, NJ
Posts: 65
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Re: springrates/ifs
I installed 375 lb springs and you MUST cut them for your application, but don't worry because upper perch on the bolt on Speedway crossmember has 2 inches of height adjustment by way of threaded adjusters--really cool feature
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02-12-2014, 05:09 PM
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#7 |
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Registered User
Join Date: Jun 2012
Location: springfield pa 19064
Posts: 63
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Re: springrates/ifs
Can these springs still be cut with coil over application.
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02-12-2014, 07:53 PM
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#8 |
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Senior Member
 
Join Date: Mar 2011
Location: West Plains, Missouri
Posts: 7,560
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Re: springrates/ifs
Guys where not taking apples and apples here. The stock springs at 350# are approx 13" or longer with the shock thru the center. A coil over spring is only about 8" long. Is large at the top to fit the stock upper hat. The lower end is about 2-1/2" in dia. to fit the collar on the shock. It takes a higher # weight on the short spring to hold up the weight. I have 600# coil over springs in mine with QA1 shocks. I was told by QA1 that I should use 700# with mine, I already had the springs so I didn't, but 700# would be better. In the Speedway book it tells you if your front end weights approx. or over 1700# use the 700# springs. Just my .02 cents worth....Jim
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my build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=459839 Jimbo's long bed step build:http://67-72chevytrucks.com/vboard/s...t=464626<br /> |
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02-12-2014, 10:34 PM
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#9 |
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Registered User
Join Date: Jun 2012
Location: springfield pa 19064
Posts: 63
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Re: springrates/ifs
Thanks Jim but I got the same info. today the spring angle and configuration changes the spring rate . I ordered 600lbs today and changed to 700 which they recommended,after reading your post
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