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I think its cam time

Jomamma

Jomamma

pssssshhhhhhtt
A few weeks ago I finally got around to measuring the max lift on the exhaust side of the misfiring cyl after checking everything else.

Using the janky harbor frieght dial indicator and mount I managed to get one accurate reading.
Measuring at the rocker arm I got a reading of .240 max lift.

I did not get a chance to compare these results with the lift from another valve because I was getting pretty fed up with the indicator mount.

So that being said, I think I can confirm the wiped cam lobe theory.

Now its time to look into which cam to buy. I want to go with something that'll be easy on the valve train, nothing too aggressive for the dd.

At first I was looking into the NIC because of that gnarly lope and its potential without an intercooler. But after reading about the mpg losses and the fact that the XP is pretty much a better cam in everyway, I started looking into other options.

I want something thats focused on mid range power and doesn't need too rev to the moon for the cam to shine. This way I can keep lighter# valve springs on it to make it easier on the valve train.

I came across this :
Overkill SBC2 camshaft, 3326/3307 HR116+2 grind number, its a 214/224 cam, 116LSA, 114ICL, .507/.507 lift @ 1.6 rocker ratio.

Reading on more about what Will said about this cam, it sounds perfect.

I can keep my 90# l76 springs and retainers
Ditch the 1.9RR
And get a new stock chain and dampener.

Any thoughts guys?
 


You also have to get a different set of lifters to use that cam.. Coolone is doing a build with one I believe. I do have a used XP cam if you end up going that route also.


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The overkill bbc cam that's the one your looking into right


Wait for coolone to jump in this thread.

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The Rhodes Lifters work with the BBC and yes, I have it, engine is put together, just waiting for time off from work to swap it into my car :( the suspense is killing me to get it all together.

the SBC cam doesn't require the Rhodes Lifters and stock is fine. As you've mentioned the stock chain and 76' springs are good too. Just do the seals while you have everything apart too as it easy while in there.

I would want more than .507 lift, but that's just me :D (using 1.8 YT RR's on Overkill's BBC, lol)
 
Ive had a s1x 98 GTP and now an 02 VS camd GTP. Seeing how you mentioned you dont plan on reving to the moon I think the VS is a good option for you as well.
 


.240 is basically stock lift. Doing it without oil pressure is impossible anyway.

If you ground .050 off a cam lobe the lifter will probably pick the slack up and your motor would make horrible noises
 
lol, more mild than an S1X or an XP?

I'd just not cam it then.

They aren't aggressive at all; especially if you have the idle speed set around 900~. Would idle just as smooth as a VS, which sounds like a misfiring 3800 anyways, not a cammed car.
 


LOL that is so true about the VS i actually had a guy say "that thing needs a tune up" i dont think it helps that i think one of the baffles is giong in my pass side muff.
 
Bio248 said:
you're wanting more mild than an s1x/XP? why?
Click to expand...

To be honest, Ive never been in a cammed 3800 so I really dont know whats what as far how aggressive each cam is.



darkhorizon said:
.240 is basically stock lift. Doing it without oil pressure is impossible anyway.

If you ground .050 off a cam lobe the lifter will probably pick the slack up and your motor would make horrible noises
Click to expand...

its .240 at a 1.9 rocker ratio.

98BrokeMyCarVet said:
s1x FTW!! 105 crow springs ti retainers fresh stock timing chain.
Click to expand...

This sounds like a good idea.

blueguy said:
lol, more mild than an S1X or an XP?

I'd just not cam it then.

They aren't aggressive at all; especially if you have the idle speed set around 900~. Would idle just as smooth as a VS, which sounds like a misfiring 3800 anyways, not a cammed car.
Click to expand...

It needs a new cam. No way in hell I'm replacing it with another stock one.

S1X looks like it might be a good choice.
 
s1x in my car and love that cam! will be getting ported heads and maybe a m122/tvs from a gt500 depending on how the conversion plate comes along from the dude on thechicagogarage.com
 
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