This car has tubular upper and lower control arms in the front, I imagine they'll clear? I see that spring has a rate of 598#, sounds like a good compromise between ride and handling. What are folks running out back? Seems something in the 200 range should do the trick?
1983 Big Block Monte Slow Build (Lowered Expectations)
- Thread starter Supercharged111
- Start date
Well, I'll say this about that: I have a Series 2/ 4L60e swap in a crew cab, currently running 5662s and want to go up to the 5664s. Out back are Eibach Pro Kits that dropped it too low, so there's a 1" spacer puck underneath. I drive it every day- HARD. It depends on your use and ride desires. That's why I recommended the "softer" spring.
Crew cab? I'm not seeing a rate on the Eibach rears, but they do look progressive on the one pic I saw. How about these Afcos?
You can pick your rate and they're pretty cheap. Not as cheap as these Black Magics, are the rears single or double pigtail?
I have a pair of KYB fronts on the shelf, going to get rears to match. Initially my intent is to keep it comfy. I run 900/225 on my 93 Camaro so I envision 600 fronts being a good starting point and a 3:1 ratio is about as far as I'd want to go again, as a starting point. Springs and shocks can be pretty subjective. Of course this has to play nice with the sways, haven't measured yet but they look to be some form of stock.
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You can pick your rate and they're pretty cheap. Not as cheap as these Black Magics, are the rears single or double pigtail?
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I have a pair of KYB fronts on the shelf, going to get rears to match. Initially my intent is to keep it comfy. I run 900/225 on my 93 Camaro so I envision 600 fronts being a good starting point and a 3:1 ratio is about as far as I'd want to go again, as a starting point. Springs and shocks can be pretty subjective. Of course this has to play nice with the sways, haven't measured yet but they look to be some form of stock.
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You're way ahead of me. I'm just saying what I gots works pretty good. Do notch the control arms, though.
I don't doubt it. I was just trying to get an idea of the front to rear spring ratio. What sways do you run?
None rear, yet. Factory front. I just picked up an F41 rear bar; haven't installed it yet.
This supports the spring rate Delta I'm targeting.
Then again, I'm basing this Delta on what my 4th gen likes. The 3rd gen is more similar to these cars in that it uses the same Moog springs, but differs with its unibody construction and Mac strut front. Who knows, in the end I may go with a big front bar and nothing out back.
Spring rates for Moog 5660 & 5662 springs? - Third Generation F-Body Message Boards
Suspension and Chassis - Spring rates for Moog 5660 & 5662 springs? - First post here. I've got an '88 firebird that's all stock for now. Picked up some interior, susp. & exhaust stuff lately. Got a set of Intrax coils for the back end at a good price, those will give me the drop I want and they...
www.thirdgen.org
Then again, I'm basing this Delta on what my 4th gen likes. The 3rd gen is more similar to these cars in that it uses the same Moog springs, but differs with its unibody construction and Mac strut front. Who knows, in the end I may go with a big front bar and nothing out back.
I just noticed the title of the thread has "Big Block" in it. I wouldn't put anything less than the 707lb 5664s in, JMO.
Hmm, so maybe more spring in the front to deal with the weight and less bar to maintain balance.
Something struck me earlier: my Crown Victoria had 700# cop springs up front. I think I cut 3/4 of a coil off of those with some fresh Ford cop shocks and it still rode like a boat, so no reason for me to fear the 5662 or 5664.
