What kind of Valve springs for my setup....?

stang93mustang said:

Use the size springs that the cam card recommends!

Click to expand...

You know, that isn't a bad idea. I took the liberty of looking it up, here: SMALL BLOCK V-8 HYDRAULIC ROLLER TAPPET CAMSHAFTS

It reads:

FRPP tech notes said:

Valve spring requirements: 120 lbs valve seat pressure minimum 295 lbs open.

Click to expand...

The FRPP springs they recommend, these, are expensive for what they are (who'da thunk? ). You can get other valve spring kits for considerably less. I've been using a rule of thumb that for HR 5.0/5.8 engines 130-150 lb. seat pressure and 300+ lb. open.

chc_1989 said:

Or do the gt40 and the gt40p stock valve springs ok for the E303 cam and the 1.7 crane roller rockers?

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Definitely not! Any of these will work:

Crane Valve Spring and Retainer Kits 44308-1

Trick Flow® Valve Spring Upgrade Kits TFS-2500100

SB FORD, GT40 DROP IN VALVE SPRING KIT, HYD ROLLER

I haven't used any of those exact springs, but I've used similar.

Pete pretty much has you covered.

Also decide what heads you are finally going to go with. I would rather save money and use GT40's than spend extra to port junkie stock E7's.

It all comes down to budget as when you start dropping $400 to $500 on a set of iron heads it reached the boundaries of used aluminum heads. You can find used aluminum heads out there for $700.

I will more then likely be going with gt40's. When looking at that chart i see that the cam has a .498 lift. So when buying new valve spring kits make sure they can handle the lift of .498? I'm fixing her up to drive and occasionaly race for short sprints like racing a honda or another mustang or even another sports car, wen i get the itch. lol And sometimes going to the drag strip. I say this because early "fast93stang" you mentioned about going over a "tad" bit. with this new information, wat would you gettlemen reccomend if i go with e303, gt40's and 1.7 crane roller rockers.

I more then likely wont constantly be reving and race every light: having the throttle wide open like a dragster, but if i do i just want to make sure i wont ruin my heads, cam, motor stuff like that.

Thank you,
Charles:worship

YLDPONY said:

You know, that isn't a bad idea. I took the liberty of looking it up, here: SMALL BLOCK V-8 HYDRAULIC ROLLER TAPPET CAMSHAFTS

It reads:



The FRPP springs they recommend, these, are expensive for what they are (who'da thunk? ). You can get other valve spring kits for considerably less. I've been using a rule of thumb that for HR 5.0/5.8 engines 130-150 lb. seat pressure and 300+ lb. open.



Definitely not! Any of these will work:

Crane Valve Spring and Retainer Kits 44308-1

Trick Flow® Valve Spring Upgrade Kits TFS-2500100

SB FORD, GT40 DROP IN VALVE SPRING KIT, HYD ROLLER

I haven't used any of those exact springs, but I've used similar.

Click to expand...

Refer to these.

Thanks guys AS ALWAYS. An unexpected bill has come up so im going to have to hold off on my heads, cam, and springs. But wen the time comes. Ill have a good idea what to do.


@yldpony you linked me a couple of sets. I never got anything man.

Thank you again guys,:gringreen
Charles

Ah, such is life. Here are the links one more time when you're ready:

YLDPONY said:

Crane Valve Spring and Retainer Kits 44308-1

Trick Flow® Valve Spring Upgrade Kits TFS-2500100

SB FORD, GT40 DROP IN VALVE SPRING KIT, HYD ROLLER

Click to expand...

No hard feelings, I hope everything works out for you :bigthumbsup