im putting the 6.1L exhaust springs in my 5.7L hemi, my machine shop needs the install height of the 6.1L springs because they are shorter then the stock ones... does anyone know this?? or know where to find this??

 

Are you doing this for a cam? They don't need that. They'll fit with no issues.

 

I've been on a page where they sold the 6.1 springs and listed the full specs: OD, wire gauge, height, etc., but I can't find it now. Should have saved it when I was on it, I guess. But the 'frog is correct, your shop has no reason to need that information for a cam swap. They are stronger than stock, but a "drop in" replacement...

 

well if they install them to stock height he said they are only 2lbs heavier then stock.... which seems pointless

 

It's not just about spring rates. It's about metal fatigue. But don't just take our word for it- call any of the top mopar shops in the country and they'll confirm this. Have your mechanic call, then he can actually learn something about cams for the hemi.

I know you'll take this the wrong way, but if he doesn't even know about the old 6.1 spring swap trick, then he doesn't know a damn thing about the hemi. And I wouldn't let him touch my truck. The 6.1 spring is the oldest trick in the book.

These are some of the top hemi shops in the country. Probably 99% of the fastest hemis come out of these shops-

http://www.inertiamotorsports.com/
http://www.sharadon.com/
http://www.frankracinginc.com/
http://www.purehorsepowerperformance.com/

 

no i wont take it the wrong way at all, i have to trust him, cause he is the only engine rebuilder left in town... only successfull one and is very popular for his work so i trust him for that. But i will call one of those shops and ask them about it. thanks for your help!

 

so i called purehorsepowerperformance, and they said just install them at factory height which is 1.80 for anyone that needs this info in the future.

 

I'm glad to hear that they got you squared away. So what cam are you going with?

 

I was just about to ask that...

 

im putting in a KRC performance 218 Camshaft, and got their custom programmer as well.