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Discussion Starter #1
The Build:
B18 that currently is stock, will be raising compression to around 10:1. Currently has twin SU carbs. I will also be port matching the intake and doing a little port work in the bowls and more on the exhaust runners. I plan on using the car as a daily driver, but would like to wake it up a little bit.

I found specs for quite a few cams at http://www.1800philes.com/ianr/_superlist_grinds.html

My initial thoughts
(just speculation, please correct me if you guys have found any of these assumptions to be wrong).

I like the look of the Volvo D and K cams for what I'm doing. They look very similar, but the D has a little longer ramp it appears. I'm assuming the K probably has a little better idle quality. The D cam probably makes more peak power and the powerband is probably shifted upward.

The Isky VV71 looks like it would have a narrower powerband. So I may be throwing that one out already.

The question I have... Does anyone have experience in the dual pattern cams for these engines. From the little bit of research I've done it seems like the exhaust side needs the most attention. Any reason a dual pattern wouldn't work?

Also, is there anything preventing someone from using a roller cam rather than flat tappet?
 

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The B18D in your '62 PV544 would indeed benefit from cam/lifter changes, head work, exhaust mods, SU mods, ignition upgrades, etc. BUT for that effort and money consider sourcing a B20, put it on the work bench then do all those mods to the B20 (including rebuild) while you drive the 544 and sort out the electrics and brakes.

The final cam decision depends on your planned use for the car but following Phil Singher's advice is a never-fail direction. Adding a 4-speed/OD to the mix also changes cam choices.

Below are links re your cam/lifter questions. B20 cam performance parameters apply to the B18 if the b18 is modded to near-B20 specs.

Enjoy.

George Dill

http://www.v-performance.com/products/engine_parts.html#camshafts

http://www.brickboard.com/RWD/index.htm?id=1346728&show_all=1

http://www.brickboard.com/RWD/index.htm?id=1290289&show_all=1

http://www.brickboard.com/RWD/index.htm?id=1273649&show_all=1

http://www.brickboard.com/RWD/index.htm?id=596861&show_all=1

http://tinyurl.com/c8otowc
 

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Discussion Starter #3
I've kind of looked through most of this information, and didn't see much about using dual pattern cams or roller cams.

As for the b20 option, I've considered it. I work in sales at a high performance machine shop, so I get a pretty good discount on custom grind cams. And I'm not too worried about cost of head work, that will probably cost me some beer and pizza.
 

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There's a fair amount of guesswork in that cam spec listing, but you're generally right about the K, D and VV71. The Isky is very similar to the D, but with tighter lobe separation. SUs will not be happy with the added overlap at idle.

A dual-pattern cam might be a good idea for you -- more lift on the intake side, more duration on the exhaust. Crane (I think it was) made one years ago that worked well, but I think it's long gone now. I would talk to Jerry at Schneider Racing Cams and see what he can do along those lines.

There are no roller cams, and it's impractical to try to make one. It's been attempted a number of times and it's never worked.

Don't do any port matching. The intakes are already matched from the factory (as you'll find out when you pull the manifold), and you want to keep a reversion wall on the exhaust ports. There's nothing near the gasket that affects exhaust flow in any way.
 

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Discussion Starter #5
Phil-
Port matched intake from the factory... that's interesting. I'm sure I'll learn more about the volvo head once I get it apart.

I'll probably price a custom about like what you described out from a couple of companies and see what they come up with. If they can't come up with anything I like I'll probably go with the K cam. Not sure how much of this will hold true in the volvo, but it seems like with newer cam profiles you can go to a 112 or 113 LSA and broaden your powerband and improve driveability without sacrificing peak power.
 

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You could also try these guys:

http://schneidercams.com/volvob18b204cyl.aspx

This is where I got my cam for a worked and ported B20f from. I went with the 274 so the car would still be good for the street as I never plan on racing it really, but as you can see they have cams with duration all the way up to 304 degrees. I originally bought a D cam from Isky but I wanted just a little more than that. I still have it brand new in the box if you'd want it for cheaper than Ipd sells it for. Just PM me if so. I was told the D cam is one of the best cams for daily-driving applications.

I also know where there is a U cam from WorldPac for a B18/20 for sale. I was told it's very similar to an R-sport cam.
 

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Andrewnance21
what kind of performance did you get from the schneider cam? I am building a 71 B20e carbed motor and was trying to figure final hp gain. I was going to go with V-Performance cam but see a lot of negative feedback on him.
 

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Andrewnance21
what kind of performance did you get from the schneider cam? I am building a 71 B20e carbed motor and was trying to figure final hp gain. I was going to go with V-Performance cam but see a lot of negative feedback on him.
chip - two posts in five years - busy man!?

Share your planned carb configuration and other non-stock changes to the B20E so we can estimate hp more realistically.

Thanks.

George Dill
 

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Andrewnance21
what kind of performance did you get from the schneider cam? I am building a 71 B20e carbed motor and was trying to figure final hp gain. I was going to go with V-Performance cam but see a lot of negative feedback on him.
I never came back to this thread, lol. Oops! I can probably tell you in a week or so. The new B20 is in, wired, plumbed, and ready to crank just as soon as I bleed my clutch and brakes. With the 274 cam I expect to lose some "around town" drivability but I'm going to do it anyway. Phil Singher suggested having them grind your cam to 110* lobe separation instead of the standard 108* that they come with if you're still running the stock SU carbs. Just in case you decide to go that route.

Yes, I would suggest not doing business with VPD. That is one polished turd of a website. Here's some more info on that if you haven't already seen it. I believe a few people are finally taking some action against John Parker. It's about time!

http://forums.turbobricks.com/showthread.php?t=234499
 

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Phil - do you have any info on the Crane cam? I have a new one complete with paperwork in my culch heap- maybe a diamond in a long box!!
(Like the B30 K cam I took out of Duncan LaBay's hand at Carlisle for $50, to his great glee.)
 

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For anyone who was interested I will get back to you with a review on the Schneider cam. Right now I'm at about 130 miles on the new B20 so I'm waiting until my final oil change at 200 miles before I really let it loose and see what this cam can do.
 
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