Rover V8 camshaft

[pitsnow]

The age old question again, I know.

But here it is:
Is it worth to go above 280 degrees duration on a RV8 camshaft if the engine is not revved over 5500 rpm?
I want the engine to work strongest between 3000 – 5500 rpm.

There are several hydraulic camshafts on the RV8 landscape with a good reputation,
the Kent H218, 224 and 234, V8Developments new H404 and its older MC1,
the Typhoon, the Piper 270 and 285 to name but a few.

The H404 does apparently need cut-outs in the pistons so is out of my equation.
I consider the Kent H224 and 234 have far too much duration (and probably lift without cut-outs in the pistons) to deliver were I want it most.

That leaves me with the Kent 218, MC1 or a Typhoon.
The Piper 285 or 270 have not got enough lift for my taste. (distributor version)

However, there is one more, the Crower 50323, which would have fitted my bill perfectly. Have a look here: www.crower.com/misc/cam_spec/cam_finder.php?part_num=50232&prn=1

The only problem is, a) I cannot get a straight answer from Crower if this cam is machined for the new trust plate and b) I would have to import the cam from USA as I was not able to find a supplier here in the UK. V8Tuner does not supply this cam anymore and I know of no other.

So to come back to my original question, which cam should I go for?

The engine is a 4.6 with stage 3 heads and Weber 44IDF set-up.
The car a Dax Rush.

Any recommendations are welcome.

[v8 racing]

Peter i am not going to blow my own trumpet here but the new stealth cam i do is excellent, i have now sold umpteen of them and everybody isd amazed at the driveability and the power they produce and they dont need pockets!!

[pitsnow]

Hi Rob
Would you elaborate on the lift and timing on your stealth?

[Seasider]

v8 racing said:

Peter i am not going to blow my own trumpet here but the new stealth cam i do is excellent, i have now sold umpteen of them and everybody isd amazed at the driveability and the power they produce and they dont need pockets!!

Hi Rob,

Is that the same as my MC2 ??

[v8 racing]

Hi del no it nothing like the mc2,
lift 486
dur 281
lca 114
26.5/74.5/74.5/26.5
overlap 53 deg
These figures are quoted on a .oo4" checking height
just be carefull when you are comparing cams from different companys ie that crower one was quoted as 276 deg on inlet but this is off the seat timing as are piper cams, if i was to quote seat timing it would be around 300 deg of duration
Rob

[Seasider]

v8 racing said:

Hi del no it nothing like the mc2,
lift 486
dur 281
lca 114
26.5/74.5/74.5/26.5
overlap 53 deg
These figures are quoted on a .oo4" checking height
just be carefull when you are comparing cams from different companys ie that crower one was quoted as 276 deg on inlet but this is off the seat timing as are piper cams, if i was to quote seat timing it would be around 300 deg of duration
Rob

So whats the difference in normal words

[pitsnow]

v8 racing said:

Hi del no it nothing like the mc2,
lift 486
dur 281
lca 114
26.5/74.5/74.5/26.5
overlap 53 deg
These figures are quoted on a .oo4" checking height
just be carefull when you are comparing cams from different companys ie that crower one was quoted as 276 deg on inlet but this is off the seat timing as are piper cams, if i was to quote seat timing it would be around 300 deg of duration
Rob

That fits the bill perfectly.
How much and are they stock?
Please PM me so that we can seal the deal.

Cheers Peter

[rev-erend]

Rob

Can you tell me the lift and duration of the Mech 404 that I've got in mine.. interested to know where it fit's in in the scale of things..

[antonyj]

v8 racing said:

Peter i am not going to blow my own trumpet here but the new stealth cam i do is excellent, i have now sold umpteen of them and everybody isd amazed at the driveability and the power they produce and they dont need pockets!!

Rob , what would expect to see from an pretty much standard 4.0 using this camshaft?

[v8 racing]

Seasider said:

v8 racing said:

Hi del no it nothing like the mc2,
lift 486
dur 281
lca 114
26.5/74.5/74.5/26.5
overlap 53 deg
These figures are quoted on a .oo4" checking height
just be carefull when you are comparing cams from different companys ie that crower one was quoted as 276 deg on inlet but this is off the seat timing as are piper cams, if i was to quote seat timing it would be around 300 deg of duration
Rob

So whats the difference in normal words

Basically it gives a wider spread of power but less peaky, it also has a much smoother tick over and no shunting what so ever.

[v8 racing]

pitsnow said:

v8 racing said:

Hi del no it nothing like the mc2,
lift 486
dur 281
lca 114
26.5/74.5/74.5/26.5
overlap 53 deg
These figures are quoted on a .oo4" checking height
just be carefull when you are comparing cams from different companys ie that crower one was quoted as 276 deg on inlet but this is off the seat timing as are piper cams, if i was to quote seat timing it would be around 300 deg of duration
Rob

That fits the bill perfectly.
How much and are they stock?
Please PM me so that we can seal the deal.

Cheers Peter

[v8 racing]

pitsnow said:

v8 racing said:

Hi del no it nothing like the mc2,
lift 486
dur 281
lca 114
26.5/74.5/74.5/26.5
overlap 53 deg
These figures are quoted on a .oo4" checking height
just be carefull when you are comparing cams from different companys ie that crower one was quoted as 276 deg on inlet but this is off the seat timing as are piper cams, if i was to quote seat timing it would be around 300 deg of duration
Rob

That fits the bill perfectly.
How much and are they stock?
Please PM me so that we can seal the deal.
will do later tonight
Cheers Peter

[v8 racing]

rev-erend said:

Rob

Can you tell me the lift and duration of the Mech 404 that I've got in mine.. interested to know where it fit's in in the scale of things..

Hi rev i will have to dig my specs out i did that one a few years ago now and cant remember!! i can tell you though that p404 was basically a track cam/mild race cam so it is much more aggresive than the stealth

[v8 racing]

antonyj said:

v8 racing said:

Peter i am not going to blow my own trumpet here but the new stealth cam i do is excellent, i have now sold umpteen of them and everybody isd amazed at the driveability and the power they produce and they dont need pockets!!

Rob , what would expect to see from an pretty much standard 4.0 using this camshaft?

I wont give figures out anymore due to the inacuricies of rolling roads etc... i cant for legal reasons!!! i can say though that you would be looking at an approx 10% increase on what you have now

[rev-erend]

v8 racing said:

rev-erend said:

Rob

Can you tell me the lift and duration of the Mech 404 that I've got in mine.. interested to know where it fit's in in the scale of things..

Hi rev i will have to dig my specs out i did that one a few years ago now and cant remember!! i can tell you though that p404 was basically a track cam/mild race cam so it is much more aggresive than the stealth

Rob,

Would it have a 'Kent' cam comparison..

www.btinternet.com/~jon.wolfe/kentcamdata.htm

Which one would be most similar - M228

The lift you quoted above was that valve lift in inches.. ?

[Seasider]

v8 racing said:

Basically it gives a wider spread of power but less peaky, it also has a much smoother tick over and no shunting what so ever.

Tks Rob,

Have to say still very pleased with the MC2 & breathing

still have the unconnected problem though

Edited by Seasider on Wednesday 12th July 10:38

[richb]

v8 racing said:

the new stealth cam i do is excellent...

Rob, does this require solid lifters (which I already have) or does it use hydraulics? Rich...

[v8 racing]

rev-erend said:

v8 racing said:

rev-erend said:

Rob

Can you tell me the lift and duration of the Mech 404 that I've got in mine.. interested to know where it fit's in in the scale of things..

Hi rev i will have to dig my specs out i did that one a few years ago now and cant remember!! i can tell you though that p404 was basically a track cam/mild race cam so it is much more aggresive than the stealth

Rob,

Would it have a 'Kent' cam comparison..

www.btinternet.com/~jon.wolfe/kentcamdata.htm

Which one would be most similar - M228
I cant find all the specs but i do remember that the lift was the same as a kent 248 and duration was the same as a 238, lca 108 and yes it was in inches

The lift you quoted above was that valve lift in inches.. ?

[v8 racing]

richb said:

v8 racing said:

the new stealth cam i do is excellent...

Rob, does this require solid lifters (which I already have) or does it use hydraulics? Rich...

Its a hydraulic cam

[rev-erend]

v8 racing said:

rev-erend said:

v8 racing said:

rev-erend said:

Rob

Can you tell me the lift and duration of the Mech 404 that I've got in mine.. interested to know where it fit's in in the scale of things..

Hi rev i will have to dig my specs out i did that one a few years ago now and cant remember!! i can tell you though that p404 was basically a track cam/mild race cam so it is much more aggresive than the stealth

Rob,

Would it have a 'Kent' cam comparison..

www.btinternet.com/~jon.wolfe/kentcamdata.htm

Which one would be most similar - M228
I cant find all the specs but i do remember that the lift was the same as a kent 248 and duration was the same as a 238, lca 108 and yes it was in inches

The lift you quoted above was that valve lift in inches.. ?

Wow - that's pretty radical .. I had no idea it was so wild..(except duration..around 285/290..)

I've always wondered the question - what makes an engine really rev high..

Is it the combination of :

Long duration, high lift and heads with enough flow, light pistons & rods..