Help with Edelbrock 5982 valve springs

[Qbrozen]

This must be a stupid question because I can't find anything about this anywhere.

I am finally getting around to installing my edelbrock cam and valve springs. There are 2 different spring lengths in the box, however (8 of each), and so far of the 3 cylinders I have removed the springs from, they are all the same length. What gives?

 

[Officer Higgins]

Give it while guys who build engines up will know, but that seems odd to me.

 

[moper]

I'm not familiar with their products. What is "taller"? The inner dampener (flat wound spring) or the the actual spring (round wire wound spring)?

 

[Qbrozen]

the actual springs. 8 are 49 mm tall and 8 are 54 mm tall.

 

[Lefty71]

Not a dumb question at all.... but im only seeing these as for SBF, like 302s and 351s in a stock configuration. No mention of the short ones, but it DOES say for use with rotators, so Im guessing if those are correct for application, youre gonna use the short ones with the rotators for sure. Id keep waiting for an expert for sure, cuz you may not want to go with those at all (or the rotators). HTH, Lefty71

 

[Qbrozen]

UH-OH. I think I do have the wrong set. Should be 5892, not 5982. UGH!!

 

[Lefty71]

Which cam kit did you buy??

 

[Qbrozen]

I gotta go back in time and see if I can find my receipts.

 

[IQ52]

This must be a stupid question because I can't find anything about this anywhere.

I am finally getting around to installing my edelbrock cam and valve springs. There are 2 different spring lengths in the box, however (8 of each), and so far of the 3 cylinders I have removed the springs from, they are all the same length. What gives?

What cylinder head are you trying to install these on?

 

[Qbrozen]

Good question. I had just assumed it had stock RB heads. Now that I have checked, the stamping is 2406516. So these are 383 heads? Is there a reason someone would put these on a 440?

 

[Lefty71]

Is there a reason someone would put these on a 440?

What year 440?? They used 516's on 426 wedges as well as 383's. Someone could have put them on there to bump up the compression, because they are good for one full point, and if you put some work into them, they could flow better too.... Anyway, the actual springs would work the same for many production iron heads, regardless of the casting/part number. HTH, Lefty71

 

[Qbrozen]

Block is a '66 cast. No idea where it was pulled from or what happened to the original from the car.

 

[Lefty71]

Block is a '66 cast

Id bet those are original to a '66 440 engine, meaning the 516 heads. They were making 516's in droves for the 65 383's and 426's. Theres no real difference in the ports anyways, and 915's on a lo-po 440 would have the same valve sizes anyway.

 

[Qbrozen]

Appreciate the info.

 

[moper]

Yup - the right BB Mopar ones are 5892, not 5982.