Here are the cam specs for my 318.....

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MrJLR

MrJLR

Built, not bought
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It's a Hughes whiplash cam for my 318.
I bought the cam, lifters and springs as a kit from them.

20160503_064508_zps5plg7oqk.jpg
 
(not mine) this should be about what you should sound like. 318 with whiplash cam from Utube :)

 
you know what?? I bet that was about a 1000 rpm idle. those cams made it sound like it was about 400 rpm's LOL! My dart with the 284/484 sounded like it was going to die while idling in gear, but she never would. I still have the cam in my closet, maybe I should use it in something.... Hmmmmmm........
It will be fun to see how the whiplash works, I've never used one.......
 
318willrun said:
you know what?? I bet that was about a 1000 rpm idle. those cams made it sound like it was about 400 rpm's LOL! My dart with the 284/484 sounded like it was going to die while idling in gear, but she never would. I still have the cam in my closet, maybe I should use it in something.... Hmmmmmm........
It will be fun to see how the whiplash works, I've never used one.......
Click to expand...

I've heard a lot of good about them so fingers crossed!

I'm going to post a picture of the springs that came in the kit....looks like a normal spring with a flattened insert inside. ....is that a "double spring"?
If so, I'm supposed to break it in with just the outter, then take it apart and add the inner.....sounds like a major PITA........
 
MrJLR said:
If so, I'm supposed to break it in with just the outter, then take it apart and add the inner.....sounds like a major PITA........
Click to expand...

My cam has the spring with damper inside, I broke mine in with both. You should be fine.

I would also pay close attention to the exhaust springs as they are over the .500 mark. Just make sure there is no binding. They should be fine, but I would at least take a looksee.
 
Bad Sport said:
My cam has the spring with damper inside, I broke mine in with both. You should be fine.

I would also pay close attention to the exhaust springs as they are over the .500 mark. Just make sure there is no binding. They should be fine, but I would at least take a looksee.
Click to expand...

How do I check that?
 
Get a valve spring height checker, install the springs at 1.66" and you will be fine. You may need shims.

Retainers are the other, if you got a kit from hughes, they should have ample clearance
 
MrJLR said:
If so, I'm supposed to break it in with just the outter, then take it apart and add the inner.....sounds like a major PITA........
Click to expand...
It is indeed, for most of us not set up with the tools to do it all the time. With your cam lift, the peak spring pressure is going to be just under 300 lbs on the seat. From all I can find, when you get up around 350 lbs open, then remove the inner spring. Below 300#, you should be OK. We broke in our cam that had very similar pressure with the inner damper in place. No problems so far at 600+ miles. YMMV....
 
nm9stheham said:
It is indeed, for most of us not set up with the tools to do it all the time. With your cam lift, the peak spring pressure is going to be just under 300 lbs on the seat. From all I can find, when you get up around 350 lbs open, then remove the inner spring. Below 300#, you should be OK if the right type oil is used and you follow a good procedure. We broke in our cam that had very similar pressure with the inner damper in place. No problems so far at 600+ miles. YMMV....
Click to expand...
 
Whiplash cams are all about having an intimidating idle.
That said, the 213* is nice for a teener.
But you better have some on-the-edge compression and a stout TC,and/or gears to successfully run that much advertised in a small cube engine.Without the complete combo, I fear you will be disappointed.

I would ask Dave what the advertised durations are on that cam,and what the recommended cylinder pressure should be for it,and see what he says. Also ask him what stall to run with it,and what gears.Or perhaps you already know, and have prepared for those?
Unless you have upped the Scr, I fear your cylinder pressure will be around120 and your Dcr will be just over 6.5/1. If that's true, um, nevermind..........But hey, it absolutely will sound wicked.
 
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AJ/FormS said:
Whiplash cams are all about having an intimidating idle.
That said, the 213* is nice for a teener.
But you better have some on-the-edge compression and a stout TC,and/or gears to successfully run that much advertised in a small cube engine.Without the complete combo, I fear you will be disappointed.
Click to expand...


Which is way more important than performance.
 
Based on Hughes Engine's website, it looks like this cam is intended for stock compression. Here is the direct quote from their website.

"WARNING: Our Whiplash cam is designed for low, basically stock compression engines. This cam will run on pump gas in a 318 with 8.4:1 or less compression and iron heads. If your compression is higher than this you may need to use a higher octane race fuel. Your vacuum should be in the 9"-11" range using this cam.
(Figures calculated using stock stroke & compression at 750' altitude.)"

Travis
 
The WHOLE sales pitch with those cams are the "sound" I cant think of a more backwards way to pick a camshaft personally.
 
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