Has anyone ever run the Mopar 528 lift cam with 340 valve springs? Did they have enough pressure? What about coil bind? Or did you have to run dual springs?
I have several sets of 340 springs, but no dual springs. I am going to try that cam, but I am being myself..............."FRUGAL"

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

I wasn't brave enough to try it Charlie. Mike did not put double spings on mine, but we did move up from the 340 springs. IIRC, the .528 cam is just a touch over what Mike felt safe with 340 springs. They are good for roughly .500 gross lift.

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Official Cookie and Mater Tormentor.

With valve lash you are pretty close to .500 anyway. It may be something to give a try. Then you can let us know how it works Charlie!!

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

I'm thinking the 340 springs are marginal. If it was a 225 and only turning a max of 6,000 rpm, I would probably try the 340 springs. This is a 170 and will be turning close to 7,000 rpm, so I guess I will have to bite the bullet, and buy some springs. Will have to wait for a little while, till the budget allows. Meanwhile I will cut the guides for seals, do a little grinding on the pushrod holes (late style head, and the 3/8 pushrods are rubbing). Maybe even put in some MP over size valves, with pocket porting. This would all be free labor (mine )

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Coil bind is the issue. These do not look good to me.

Lou

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Home of Slant6-powered fun machines since 1988

Yep. I'm thinking, "penny wise and pound foolish". There is a difference between "frugal" and "cheap". I will just wait a little bit and get a better spring for the application. Anyone have a deal on some springs?

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

run these...

http://www.summitracing.com/parts/CRN-99839-16/

they will give you a good 300 open pressure 130 seat...

something to remember to is Lift(- lash) + .050 clearance + coil bind = installed height...

these will give you the pressure and with .020 shim or so (on a 1.7 stock installed height) should have you set...

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1965 Plymouth A/FX 512ci (under construction)
1968 Dodge Dart SL6 14.25 @ 91.5 1.91 60'
1973 Dodge Dart SL6 Stock
Killer Bee's Member Since 09'
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