cam upgrade

yzfr12007 · Sep 15, 2010

i have a stock set of heads and looking at an x303 cam do i need to upgrade my rockers or anything else that i have to change to run that cam???

revhead347 · Sep 15, 2010

You need to upgrade your heads. That cam will tear your engine to pieces.

Kurt

ProKiller · Sep 16, 2010

its a little too aggressive for stock heads. you'd be better off getting better heads than a cam swap at this point.

skeptiq · Sep 16, 2010

Not to hijack this, but for stock heads, what cam would work without killing the engine?

B, E, F???

Thanks,
Ben

alleymad95GT · Sep 16, 2010

For stock heads, you are better served just going with some 1.7 roller rockers.

That's just my opinion...

final5-0 · Sep 16, 2010

While I don't care for alphabet cams

One thing to keep in mind is .........
those cams were built to crutch up the piss poor e ports of OEM heads

therefore

It would seem to me that ...........
e cam would be more suited to be used with E7's than a TFS 1 cam that
was built for heads that do not have the same short comming as
old OEM iron heads

Just a thought

Grady

revhead347 · Sep 16, 2010

There old single grind cams. They were designed to give old SBFs that classic grumbling noise. I'd also like to add that a .542 lift cam is likely to have piston to valve clearance issues without notching the pistons.

Kurt

Dino Dino Bambino · Sep 17, 2010

alleymad95GT said:
For stock heads, you are better served just going with some 1.7 roller rockers.

Agree. If you have poor-flowing heads there's no point in having a big cam. Actually you could transplant higher-flowing heads onto the 5.0 and it would perform very well with the stock cam and 1.7 RRs.

BlackVert · Sep 17, 2010

your best upgrade would be getting a new intake and swapping out the gears before doing a cam. do the cam and heads together

just a couple of pennies from an old fart

skeptiq · Sep 17, 2010

Thanks for the info... was curious myself. I had been kicking around the idea of e303 for my E7's, but I think I am just going to leave the vert alone in that dept. If anything I do like the idea of the 1.7's. Would the rockers upgrade be noticable in terms of hp gain, or minimal?

My current setup:
3.73's
Cobra upper / .5" spacer / lower
70mm TB
Cold air
Shorty headers
Pro Chamber
Pro Dumps

Thanks,
Ben

final5-0 · Sep 17, 2010

IMHO ... 1.7 rr's would gain less than 10 rwhp

Grady

revhead347 · Sep 17, 2010

10 rwhp isn't bad considering it's a 1 hour swap, and the rockers are something you're going to need eventually anyway. A cat back is only like 10rwhp, and that takes half a day to install, and costs twice as much.

Kurt

final5-0 · Sep 17, 2010

I'd bet you'd be closer to 5 than 10

Grady

Black95GTS · Sep 18, 2010

"The best cam for stock heads is the stock cam." - Jay Allen

Adam

Dino Dino Bambino · Sep 18, 2010

revhead347 said:
10 rwhp isn't bad considering it's a 1 hour swap, and the rockers are something you're going to need eventually anyway.

The gain is more like 5rwhp but 1.7 rockers are still worth it. They're easy to install and you can still use them if you upgrade to better pedestal-mount heads and upgrade the cam later on.

cam upgrade

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Apparently my ex-husband made that mistake.

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