Good Valve Spring Kit for AFR 165s

[94ford331]

I am going to be putting a Trick Flow stage 2 camshaft in my car, and I was wondering what the best after-market valve spring kit to go with is. The car is a 94 cobra so it has the Crane 1.7 rockers stock, therefore, the TFS cam will be around .580 lift. I know the stock AFR 165 springs are only rated at .550 lift and even then I've heard that is questionable.

PTV clearance will not be an issue because the car will have KB dome pistons. I am looking for a valve spring kit that can just be installed without machining the head. Any help or advice would be appreciated, thanks.

 

[revhead347]

I'd shoot an email to Flow Tech Induction. Ed will know what spring to run, and probably have them in stock. On a side note, that cam is a little big for those heads unless they've been opened up a lot.

Kurt

 

[94ford331]

Why is it too big? The heads flow more at .550 lift than .500 according to their site? Only have a B303 in it right now. I figured it would have a lot more average power. Not really a big fan of the B303, the car doesn't feel fast at all until like 3500-4000 rpm.

 

[revhead347]

Letter cams are the laughing stock of the cam community. They are old single grinds from the early 80s. The bigger the cam, the higher the rev range, so your problem is only going to get worse. For the money you are going to spend on new valve springs you could get a custom cam. There is a guy on here with a convertible mustang who was running 12.5 on AFR 165 heads and a custom cam from Ed Curtis at flow tech induction. It was a 331cid low compression engine, though. Not sure exactly what the optimum lift to make those heads flow is going to be, but I'm sure that it's less than .550." You'd be much better off spending the money on the right camshaft.

The custom cam on my engine is only like .577" of lift and I'm running a very large set of Canfield heads on a 347.

Kurt