IHI

iTrader: (1)

I had my old set-up with moroso trick springs, new block is 100lbs heavier and front end was low before..now it's bad...as in front tires are now angled up into wheel wells. I am contemplating going with the BBC moroso trick springs, OR Afco coil springs from my dirt track catalog that will fit our stock locations.

Just wanted to see how tall our factory springs are, and how many lbs they're rated for to give me a baseline to look at the Afco coil springs.

AlkyIROC

Something like 700 lb/in. It's really going to depend on the wire size. A thin wire found in V6 springs won't have as much spring rate as a thick wire found in Z28/WS6 springs.

I finally ordered some BBC trick springs. The V6 springs I have in the car just don't cut it any more. I hope to have them and installed in the car before the next race.

IHI

iTrader: (1)

I want to say our springs are 5 1/2", trying to remember since we installed camaro trick springs in the S10 and I measured to check diameter..but I never wrote it down so I cant say for sure.

Problem with my dirt track catalog is choices...to many without knowing more.
they have 5.5"x9 1/2" and then there is 5x11, 5.5x11, 5.5x12, 5x14, 5x15 and then you get into poundage and they go in 50lb increments from 550 - 1490 and then you hve the trick springs carrying 1740-1850, but these springs act totally different than a "stock spring" so I'm kind of ignoring they're advertised ratings since they react so differently. Depending on how this new combination acts, I'm half tempted to drop back to a stock strut and lose the 90/10's to help slow down extension a bit since the moroso spring/90/10 throw that front end up in a hurry and with a force I've never known LOL!! Would like to slow the rate down a bit and make it a smoother transaction for weight transfer so it does'nt want to unload quite as quickly....I never had an unloading problem in the past, just trying to think ahead after a day at the track for some data recording.

Sonix

iTrader: (1)

hmm, the stock V6 ones are the moog 5660, stock real camaro springs are the 5662 at 700lbs/in, and the heavy duty convertible or S15 ones are 5664, at 750lbs/in.

I'm not sure if i'm totally on another base here, but who's the guy with the orange/black car here? Bad406 or something?
He's chained his a-arms so they can't extend fully. I think it was to basically add some weight to the front end, so when it tries to lift, it won't fully stretch out the front springs, it'll have to lift the tires off the ground. If I'm remembering right. Would that kind of trick work in your case?

IHI

iTrader: (1)

Strapping the front end serves a few different purposes, mainly it helps make the chasis work harder and car reacts a little quicker since it's not wasting all that motion extending front struts/shocks however you want to look at it which equates into quicker R/T's. It also helps prevent the rear end from unloading since alot of times depending on shocks/struts the front end will go full extention, and then want to collapse back down almost as quickly causing the rear tires to unload which is bad...strapping it down does'nt give the front end the time to build up momentum since it's literally on a short leash

I need a stiffer spring since this new engine is essentially BBC weight in a sbc package. The current trick springs I have I cut, and it was borderline too much before with the stock engine/parts, now with the new dart lil m block which is 100lbs heaver than a stock block...my front tires are angled up into the wheel wells, and I can no longer get a jack under the k member without lifting on the bumper first to create the room...as it sits I wont be able to load it on the my trailer since the exhaust already drug before...I want to set it up heigth wise like the stocker guys so I can get bigger tires front/back installed to increase tire roll out for traction as well as roll out to slow down R/T's since I was on the verge of red with the last engine that was lower output than this new one.

Lots of things going on, am hoping to get on the track soon after I take care of some oil leakage issues, then i will have solid data to base upgrades on.

Sonix

iTrader: (1)

huh, ok thanks for the info. I always wondered about that. Yea, I guess it keeps the front springs/shocks more loaded, so that it HAS to pick up the front end if it's going to, rather than unload it.

But yea, more weight on your front end means you need more spring. I'm not sure what spring rate you had before, but that moog 5664 is a good option. It'd be in stock locally at a normal parts store, for the stock part type of price ($80 maybe) and has the stiff rate and normal height. I'm running it, albeit with a "normal" weight engine.

blyth18md

Check this post for additional info that may be helpful if you havent noticed it yet.

https://www.thirdgen.org/forums/post...15-post25.html

AlkyIROC

Out of curiosity, what's your front end height right now. Measure from the floor to the top of the fender opening inline with the spindle.

My V6 springs are probably a little overloaded. To get a jack under the front of my car, I need to turn the wheel and go in through the wheel opening. At least I can still get the jack under the tubular k-member. Although you can't see it very well in my sig picture, my car has a definite raked look. Lifting the front end a little higher will help with weight transfer.

My front height is 26-1/4" and I run a 27.5" tall front runner.

IHI

iTrader: (1)

Stephen, I'm going to try to get the car back over tomorrow (we have a make up T ball game tonight) and before I mess with it, I'll get the measurement. I know my car has had the rake since I installed the trick springs since I cut a wee too much coil from it when installing...I'm sure you'll find the same thing that stocked shipped heigth is waay too tall to fit into the stock opening, I managed to squeeze them in out of the box, but the front end was at full extention and rock solid, so I set my old stockers next to the trick springs and left one full coil higher than stock and cut it off with a cut off wheel, then ended up taking another 1/2 coil and it was too much..shold only took a 1/4 coil that second go round. It was fine back then and did'nt look too gawdy, but I want to raise it up a bit so my exhaust does'nt hit stuff when I have a passenger in the car riding around town.

AlkyIROC

My trick springs arrived today. Fender opening height with V6 springs 26-1/4". Fender height with third gen BBC uncut Moroso trick springs, 27-1/2". They may settle a bit more as I drive the car forward and backwards. Huge thunderstorm just hit the city so I can't get it out of the garage. My front weight is still heavy enough to require the BBC springs. I actually have a lot of room now between the collectors and the ground. I wasn't scraping them before getting on or off the trailer but it was close.

5678TA

not sure this will help but here you go.. just some springs.. first is the moroso SBC, second is stock v-8, third is eibach sportline..

ride heights:
~3/4" drop
stock
~1-5/8" drop

AlkyIROC

Interesting. My trick springs were only slightly higher than the V6 springs but had a lot more coils.

Third gen springs have a bunch of different sizes and spring rates. I've never pulled a spring from an iron duke car to check it out. V6 springs should be pretty standard. V8 will probably have a few versions but I'd say you either have generic V8 springs or IROC/WS6 springs.

5678TA

those came off a regular lowend 84 firebird.. so probably just your average v-8 spring..