Ordering a cam from Crane

[Superdave]

Just thought i'd post up what they had to offer.

Currently they have 7 more solid roller cores for the 3x00 P/N 259356

they are listed for the '97+ 3100/3400 so you guys with the new cam trigger might be screwed. I'm not using the cam sensor so you guys have fun figuring that out.

These are the avaliable lobe profiles you can choose:

Duration @ .050/ Lobe Lift-Valve Lift with 1.6 rocker

238/.386-.617

238/.378-.604

242/.373-.596

247/.372-.595

238/.365-.584

234/.360-.576

234/.359-.574

238/.337-.539


Knowing max lift with LS6 springs on stock heads is roughly .560 I opted for the last option, if you have the spring seats cut deeper you can go with a much higher lift as long as the valve dosen't kiss the piston. lol

for the record, my cam is a single pattern .539 lift/238° duration 110 LSA 106 IC

Total cost is $404 + ~$12 for shipping.

Cheaper than Milzy's cams and Crane don't BS around.. he said i might have it in my hands before Friday.

[farmerz24]

are u sure that is .050 duration and not advertised?

[Superdave]

are u sure that is .050 duration and not advertised?

Yep.. that's what the Crane guy said.

He's going to call me back tomorrow with all the info.

Mine came up with 19 degrees of overlap which isn't too bad. the stock cam has -28 degrees so...

[MidnightriderZ24]

not sure on the stock specs but couldnt you get a regrind close to that?

[Superdave]

not sure on the stock specs but couldnt you get a regrind close to that?

On a stock GM hollow cam with press-on lobes?


you could get a regrind, your LSA is usually limited to 112 or so, and you'll always have to get new pushrods...

stock 3x00 cam is
Duration : 196º in. / 196º exh. (@ 0.050" lift)
Lift @lobe : 0.273"
1.6 roller rockers : 0.437"
LSA : 112º

[SappySE107]

You can get a stock non press on lobe cam and get a regrind for less and not have to get the bronze oil pump drive gear. Thats what I am doing. You can go 114 or 110 LSA but your lift and duration are cut down compared to what you can accomplish with a 112 LSA. Im looking at about 232/240 (i think its 229/237), 281/289 (little less than that) advertised, 108 ICL, .560/.568. Ill know the final specs later.

[ezrollin]

Excuse my ignorance but what's the advantage of LS1 springs over the factory recommended springs ?

[AaronGTR]

Maybe I missed something, but when the hell did crane start making cams for the 3x00? Crane and comp always said there was no market for it and they'd never make one which is why the only options we had was cammotion or a regrind.

[AaronGTR]

Excuse my ignorance but what's the advantage of LS1 springs over the factory recommended springs ?

LS1 springs are slightly stiffer than stock 3100/3400 springs. Stock springs have valve float issues at redline even with the stock cam when they get old, or with a raised redline. With those higher lift/duration cams he listed you'd go to even stiffer LS2/LS6 springs.

[3400-95-Modified]

Why does everyone say good luck on the cam sensor option???

My friend on the bstuff board is running a 04 motor in a 95 beretta with a stock ECM and his cam sensor picks up the signal just fine... I'm confused on why people think it wont work. I'm running a 01 cam in my 95 so thats another variation that works just fine too...

I will be running my 05 3400 with the newer style sensor just spliced into my wiring. They are a 3 wire Hall Effect sensor, they all produce the same signal, or one that the ECM can interpret, because 99% of the time all the ECM is looking for is the leading edge of the signal to position cylinder 1 TDC.

Bottom line is 97+ cams will work in 94+ motors/ecm's...

[bszopi]

Yes, this was discussed greatly on GAGT when the Cam Motion cams first came out. It was determined that the signal is converted inside the cam sensor, so each sensor will be sending the same signal to the PCM. If the signal was converted inside the PCM, then there is a possibility is would be an issue.

Oh yeah, and I am running an 01 3400 on a 94 PCM with no CPS issues as well.

As far as Crane making cams, this was discussed awhile back. Not sure why they made some cores, but they did make a limited number (as stated above, there are 6 left?), and thus they are available for sale.

[Superdave]

well.. i got the call i didn't want this morning.


The cores Crane has can't be ground to my specs.. aparently the minium lift they can go is .437 tappet lift, .700@ valve. The cores were made and partially finished. He said it would be too thin if he ground it to my specs.

I've been calling around to a bunch of places and may have some leads. Maybe something to discuss with Ben for the 60v6store as well. I'll post up more info later.

[bszopi]

Its still a little extreme, but using 1.5 rockers instead of 1.6 would bring it down to .656" at the valve.

[3400-95-Modified]

they can only grind to a min of .700 valve lift... HOLY JESUS What cam core are they starting with. Thats nuts.

I think a real timing chain needs to be found for these motors before anyone goes over .550 lift With a cam that agressive you'll be stretching chains like bubble gum.

I'm concerned on how long my stock 3500 chain will last with a stage 1 cam and LS6 springs...

[SappySE107]

I am working on a double roller chain fitment with a modified timing chain cover. If it ends up working out I will have the setups on the store.

Id like to know why the minimum is .700" lift with your cam specs. That doesn't make a lot of sense.