12 replies to this topic

[alanoo]

Yeah so basically.

 

A few years later, what is the reckoned situation about cams on a SC engine ?

Now that we all have more experience and that there are proper tuning solutions available (thanks for that Peter), do cams really help or are the holly grail for an SC engine ? 

One more specific for me would be, some years ago, we kind of agreed Schrick cams were sh*t for a SC engine, which is somehow not logical as they are still agressive. Maybe there is some more/new experience about this combo somewhere ? Here or in DE/NL maybe ? If someone lurking around has some info I'll take it. 

[oakmere]

I only know of one person using Schrick cams on there SC car. They made about 175 Bhp with the stock pulley. So I don't think they are that bad. Cobra 8 is making 500bhp on Vockys old stage 3 NA comp cams. I would not change the Schrick cams for comp cams if I went SC as they give far better idle.

[tibby]

Comp cams make a M62 charger go to 300 and more hp. Without the cams this is impossible. With the comp cams (depends what stage u use idle is indeed terrible, but you have obd tuner to correct this) Smiley,Exmantaa, will have a lot more info of this ..... so, wait for a Dutch answer..... :-)

[Exmantaa]

What do you want from the engine? And a 2.0, a 2.2 or a 2.3+ litre engine?

[alanoo]

Let's say a 2.2 engine, as these are made for 2.2 engine originally.

Quick briefing is I have a full M62 kit, and I have a nice forged + Schricks 2.2 engine sleeping in the garage (but which has to be reworked as the head has seen some rust due to bad storage).

Question is : which way do I go ? Is there some success anywhere in the world with 2.2 + Schricks + SC ? 

[vocky]

on the ITB engine the Schrick cams give a similar power to stage 1 comp cams. I personally don't rate them very much - due to their high purchase cost and the extra machining required to fit them, but they do work well once fitted. Just not great value for money

 

With a SC on standard cams you will be lucky to get past 270bhp with a 2.5" exhaust. Just by adding the blower cams or LSJ stage 2 cams you should easily get 300-310bhp on a 2.2 litre 'GM sc' engine with the same 2.5" exhaust.

 

That said the stage 3 NA cams worked very well in the 2350cc Harrop engine I built, so I would suspect that stage 2 NA cams would also be better than the blower cams as they are a stage 1 and a stage 2 NA cam.

 

I have some Catcams in my ITB car and they work very well.

 

So I cannot see any reason why the Schrick cams won't give good results with a GM sc

Edited by vocky, 14 September 2016 - 04:27 PM.

[alanoo]

Yep vocky, I heard that and saw results consistent with what you say a few times.... Still put the Schick profiles in any valve train or cam simulator and it will say they are a close to a match for stage 3 cams (with even a more aggressive ramp rate). So somehow there still are some dark secrets over there.

Edited by alanoo, 14 September 2016 - 05:45 PM.

[Bargi]

Over my time here ive noticed most who have stg 2 pully with cams do about 262ishbhp.(yeah I know but that number sticks in my head) Do you care for oem-ness idle and drive often in stop start traffic? If so stick standard or stg 1. I miss the chunky torque I had a 3 inch pully, M62 and standard cams. Basically did everything in 3rd gear on track, was like an automatic. Even with the Harrop the stg 2 comp cams feel like they've properly shifted the grunt up more and I need to stir the gears a bit more as it'll bog down more if you're not in power band of the cams. This is all in my opinion and I'm not the type that likes to be revving the tits off my engine and prefer bottom end grunt

[CHILL Gone DUTCH]

7500 rpm for the win

[Bargi]

7500 rpm for the win

 

VTEC yo!

[oakmere]

Schrick cams are stupid expensive but they are a great road cam with no drivability issues and the best idle I have come across due to the short duration high lift rather than long duration low lift comp / piper cams. Alanoo I am sure your engine would be good for 300 Bhp with these cams and a smaller pulley. What would you do about the increased compression? I have considered going SC but as I don't have forged Pistons so thought a stage 1 pulley and the 11:1 CR could be workable?

[alanoo]

Schrick cams are stupid expensive but they are a great road cam with no drivability issues and the best idle I have come across due to the short duration high lift rather than long duration low lift comp / piper cams. Alanoo I am sure your engine would be good for 300 Bhp with these cams and a smaller pulley. What would you do about the increased compression? I have considered going SC but as I don't have forged Pistons so thought a stage 1 pulley and the 11:1 CR could be workable?

 

i have to open the engine, to sort out the head (at least two valves and their seats show signs of rust). So I think I'll put my spare Saab head and getting back to 10:1 compression, hoping the pistons and especially the rings are OK.

[ChrisNo/Swe]

Hmm, i need dutch software i think..

I have M62, unsure about pully size and comp cams  XE252HR-11.

Idle sucks, strong torque in midrange and it loves to rev