David,
will the 6 cylinder springs, with possibly one coil cut out, handle the weight of a big block?
I ask this because on another site I visit, for drag racing, this topic got brought up and most guys favor the 6 cylinder spring before they would buy the moroso springs. Now I don't know if they run big blocks, but I would think that they are and if they cut any coils off is another question?
Any thoughts?
Bruce

it would "handle it", but, man, would it be LOW..

If I remember right, I bought my new springs<locally> and it showed Moog <replacment> P/N's as being the same for 6 and 8's, the Z's were different,as were the BB's.

According to the Moog parts book, all their springs are 5% stiffer than stock springs.

The Moog #6308 spring I often recomend for mild street handling SB use is listed by moog for 6 cyl HD, with no air.
I suspect this spring was also used in some 69 Z/28's but Moog does not list a Z/28 in their book.
I took a Z/28 spring tag part number and looked it up in the crossover chart in the Moog catalog and it crosses to the 6308.

Most first-gen springs listed are around 290-to 327 in rate, the BB springs are the same soft rate but taller than SB springs. I assume the heavier engine requires a taller spring to hold ride height. Plus It might be BB Camaros may have used a little taller ride height.

#5230 has a rate of 264 lbs and a free height of 18.1". It is a 6 cyl spring for a 69 Firebird 6 cyl, and would have tremendous front lift but might be too soft.
I don't know what is good for a drag car.
David

Thanks for the replies. I'm going to check out the #6308 springs.
Bruce

What is your use for the car?
Drag, autocross, street?
The 6308 is a good SB spring that is equal in height to sagged stock SB springs, and equal to most lowering springs but softer in rate. Most lowering springs are 600 to 700 rate.

There is a slightly taller #6320 (.300") coil that might be better for the heavier BB engine, it is the same rate - 380 lbs/in. It is for the same 6 cyl 69 Camaro application but for air conditioning plus heavy duty.

Neither of these are the typical 6 cyl drag springs. These will give less front lift in a drag situation but better street cornering with a lower ride height compared to normal replacement moog springs.
David

I'm going to use it for drag racing. I was reading how the moroso trick springs can make the front end lift too much while going down the track, and a lot of replies stated to use a stock 6 cylinder front springs. The posting then got interfered with and a war started out with one of those, "I know more then you" type of battles, so I stopped reading it and never went back to ask questions. Every site seems to have one or two of those guys, huh?
I want to keep the car as low as possible, for the back end has been tubbed and it sits at least 6-7" off the ground now, with the original 6 cylinder springs in it. The car had a 250, no air in it when I bought it. The car sits level now, but I'm wondering what will happen with a " new" set of springs in it? And then I hate to cut a link off the springs and then I hit bottom.
Thanks for the help, any other thoughts?
Bruce graemlins/thumbsup.gif web page (http://hobbystage.net/camaro/rolandracing/)