LT4 Cam Question
Re: LT4 Cam Question
Originally Posted by FastZinTennessee
If you don't mind running marginal, just good enough parts on your car, then I agree- upgrading the springs is completely unnecesary

Re: LT4 Cam Question
Originally Posted by Josh-'04 GTO
remember that it only takes one bad valvespring to ruin your day... 

This really is a pointless argument. I'm not concerned with what will barely get the job done, I'm concerned with what I components I can put in my car and rely on. This is why I chose to upgrade the springs. It's a purely optional thing.
I personally would rather overbuild my car then get something just good enough. I'm **** about it, and I like to think it saves me grief later on. If you don't agree, then fine- it's your car build it how you want it.
Re: LT4 Cam Question
Originally Posted by FastZinTennessee
Which is a perfect reason to upgrade your LT4 springs!!
This really is a pointless argument. I'm not concerned with what will barely get the job done, I'm concerned with what I components I can put in my car and rely on. This is why I chose to upgrade the springs. It's a purely optional thing.
I personally would rather overbuild my car then get something just good enough. I'm **** about it, and I like to think it saves me grief later on. If you don't agree, then fine- it's your car build it how you want it.
This really is a pointless argument. I'm not concerned with what will barely get the job done, I'm concerned with what I components I can put in my car and rely on. This is why I chose to upgrade the springs. It's a purely optional thing.
I personally would rather overbuild my car then get something just good enough. I'm **** about it, and I like to think it saves me grief later on. If you don't agree, then fine- it's your car build it how you want it.
Re: LT4 Cam Question
Originally Posted by Josh-'04 GTO
you're fighting a proven combo that works with pure hypothetical talk... "Barely gets the job done" is flat out wrong, whether you choose to accept that or not. I've got actual real-world experience with it and know it works...I guess we'll just agree to disagree. 

I guess the next time someone tells me face to face that something is not up to the task, I'll just tell them that some guy on the internet told me it would work, and then magically it will
If I could build a car based on what people tell me on the internet, my car would run 4's in the quarter, get 45 mpg, and never need any maintenance
Re: LT4 Cam Question
Originally Posted by FastZinTennessee
When the guy setting my cylinder heads up tests the springs and says "I can't believe they would sell you these springs for that cam. I thought you said this came packaged as a kit?" then I know something is amiss.
I guess the next time someone tells me face to face that something is not up to the task, I'll just tell them that some guy on the internet told me it would work, and then magically it will
If I could build a car based on what people tell me on the internet, my car would run 4's in the quarter, get 45 mpg, and never need any maintenance
I guess the next time someone tells me face to face that something is not up to the task, I'll just tell them that some guy on the internet told me it would work, and then magically it will
If I could build a car based on what people tell me on the internet, my car would run 4's in the quarter, get 45 mpg, and never need any maintenance

Last edited by Josh-'04 GTO; Mar 20, 2006 at 05:04 PM.
Originally Posted by Josh-'04 GTO
I guess I'm just "some guy"...another internet bench racer... 

Good point Dwayne about the lighter valves. Josh, honestly, after reading your belief that increased spring pressure costs horsepower, I knew not to read any more of your post.
Re: LT4 Cam Question
Originally Posted by chrism400
Good point Dwayne about the lighter valves. Josh, honestly, after reading your belief that increased spring pressure costs horsepower, I knew not to read any more of your post.

Originally Posted by chrism400
No, you're just a guy who drives a Ford.

Last edited by Josh-'04 GTO; Mar 21, 2006 at 04:24 PM.
Re: LT4 Cam Question
Originally Posted by Josh-'04 GTO
You don't think the cam encounters much more resistance to turning when you make a major jump in spring pressure? 

Re: LT4 Cam Question
Originally Posted by chrism400
I know it sounds like it should but, the same force to push up is pushing down on another lobe. It's not a significant loss. Plus, we are only talking about another 30 lbs. of pressure on the seat.
Originally Posted by hotrodmagazine
Since there are 16 valvesprings on a traditional two-valve V8 engine, the force exerted on the camshaft is considerable, even with relatively weak springs. This force resists the engine’s rotation, which costs horsepower. The stiffer the spring, the more horsepower loss. That’s why matching the correct spring to the engine is critical. Ideally, the spring should have just enough tension to work at maximum rpm (plus a little more, just in case), but not so much that horsepower and cam life are threatened. Above all, always use the springs that the camshaft manufacturer recommends for your cam
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