[krs]

I contacted Crane about the cams and was told there are about four different variations..Im looking for one with the most low end torque/power and mid range with some top end.

Here is a pic of the cam card I sent crane and I bolded the reply below from a rep at Crane Cams.

Please help me..

"YES THERE ARE FOUR DIFFERENT GRINDS THAT HAVE A 206 INTAKE. THE ONE YOU REQUESTED HAS 206 INTAKE & 218 EXHAUST. INTAKE LIFT IS .502 EXHAUST IS .465 AND IS GROUND ON A 112 LOBE SEPARATION. WE HAVE ALSO DONE THE SAME CAM BUT GROUND ON A 115 LOBE SEPARATION. THE OTHER COMBINATION IS 206 INTAKE AND 212 EXHAUST. VALVE LIFT INTAKE & EXHAUST 502. BOTH WITH 112 OR 115 LOBE SEPARATION".

 

[jmgak47]

206/212 .502/.465 115 LSA is my pick for your truck.

More TQ then the 206/218 and EZ'st to tune due to the 115 LSA.

 

[02_4pnt7]

I believe you will have more low end with a112 lsa. Just need to see if the 206-212 has more tq or less tq than 206-218

 

[jmgak47]

I believe you will have more low end with a112 lsa. Just need to see if the 206-212 has more tq or less tq than 206-218

Yeah the 112 LSA will have more TQ then the 115 with a higher peak power with a smaller powerband. Due to less duration is should have more TQ. Also its closer to a single patter cam then the other and single pattern cams usually have more TQ.

 

[MagnumPower]

KRS, how much?

 

[02_4pnt7]

I'm leaning on the the 206-212 502-502 intake and exhaust. If I'm not mistaken this cam is designed so you don't have to Rev so high. Correct me if I'm wrong..

 

[krs]

KRS, how much?

It aint cheap, but it will be worth it :rck:

300 for h/o's
300 for rerinds
100 for the lash caps


Jmgak47 & Nick I appreciate the replies and feeback you have given so far..Ill be calling Crane tomorrow to see what they have to say also.

 

[jmgak47]

That would be the 206/212 .502/.465 112 LSA should have a lower power band then the rest and not need the higher RPM's to make good power. Also should have a nice sound idle with that tight of a lobe separation. Thinking on building up your new truck? Sure sucks about your old one.

 

[jmgak47]

It aint cheap, but it will be worth it :rck:

300 for h/o's
300 for rerinds
100 for the lash caps


Jmgak47 & Nick I appreciate the replies and feeback you have given so far..Ill be calling Crane tomorrow to see what they have to say also.

Thats not really all that bad. $700 bucks for two camshafts.

 

[05whitehemi]

206/212 .502/.465 115 LSA is my pick for your truck.

More TQ then the 206/218 and EZ'st to tune due to the 115 LSA.

That would be my pick to, But for the costs of these cams I think a torque converter is a better choice...

 

[02_4pnt7]

That would be the 206/212 .502/.465 112 LSA should have a lower power band then the rest and not need the higher RPM's to make good power. Also should have a nice sound idle with that tight of a lobe separation. Thinking on building up your new truck? Sure sucks about your old one.

I don't know if they make a 206-212 502-465 grind.

As for my new truck I'm only putting longtubes and tuner for now.

 

[jmgak47]

I don't know if they make a 206-212 502-465 grind.

As for my new truck I'm only putting longtubes and tuner for now.

My bad lol I didn't read as closely as I should. Well with the less exhaust lift for the 206/218 and more for the 206/212 they should have very similar TQ when comparing 112 to 112 and 115 to 115. With the 206/218 probably being more friendly to nitrous with the larger split pattern duration.

 

[02_4pnt7]

My bad lol I didn't read as closely as I should. Well with the less exhaust lift for the 206/218 and more for the 206/212 they should have very similar TQ when comparing 112 to 112 and 115 to 115. With the 206/218 probably being more friendly to nitrous with the larger split pattern duration.

Hes only got a superchips, 08 intake, 70mm throttle body, 4.56 gears, and 35" tires.

I'm thinking that the 206-212 was an old grind and they came out with the 206-218 since it had good results. The more I think about it, it seems like I talked to Marty about this at one time.

 

[krs]

Thats not really all that bad. $700 bucks for two camshafts.

So true, although it took me forever to save up for them lol.

A single 5.7 cam generally runs about 250+ I believe?

That would be my pick to, But for the costs of these cams I think a torque converter is a better choice...

One day Lonnie

 

[krs]

Off topic, I just noticed below my avatar pic it reads "senior member" I take it this is by default?

 

[jmgak47]

So true, although it took me forever to save up for them lol.

A single 5.7 cam generally runs about 250+ I believe?

350 to 450

 

[Fast4.7]

A single 5.7 cam generally runs about 250+ I believe.

I had a custom grind Comp 5.7 cam ground back in October, it was around $415 shipped to my door.

For Superchips friendly I would have a 206/212, .502/.502 lift on a 115 LSA which are stock non HO 4.7 cam cores. Expect to need a PSC-1 to tune the fuel.

 

[krs]

After talking with a rep from Crane today he confirmed the pic of the cam card I posted 206*218*.502*.465*112 will provide the most low end power. Custom tuning is a possibility, but I like to see how the truck is going to perform just with the Superchips?

 

[jmgak47]

I would highly doubt it would run on just a Superchips tune with that tight of a LSA. Its that LSA that give the most TQ, rougher idle, but also makes it harder to tune. Also even if you get it to run on it you will not see its full potential.

I recant my last pic and go for the 206/218 .502/.465 115 LSA knowing know that that duration and lift combination makes the most TQ.

 

[krs]

Ill take that into consideration..Here are the specs for my current h/o cams

H.O. cam specs
.472 lift on the Intake with 236* of duration
.429 lift on the Exhaust with 250* of duration
with an 18* overlap