Its time to pick a cam for my engine.
Engine is just on 10:1 comp, true flat top pistons, original L34 heads. Crane gold rockers. Going to run the twin coil dissy or maybe get a HEI.
I am running twin 45mm DCOE webers but not sure whether to run original manifold or use a performer?
Cam must be HYDRAULIC.
Has anyone used the new Crane 226/230 0.502/0.496" 108LSA or should I go custom?
Help me pick a cam L34-308
Started by
LS1LX
, Jan 25 2007 08:17 PM
14 replies to this topic
#1
LS1LX
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Posted 25 January 2007 - 08:17 PM
#2
_1QUICK LJ_
_1QUICK LJ_
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Posted 26 January 2007 - 12:45 AM
the crane H226 cam you mentioned is a brilliant cam especially for its size it makes quite alot of power, very snappy and driveable, ive fitted two of them for people so far, and ive got one for my combo also. it will work really good with a performer manifold 
#3
_Yella SLuR_
_Yella SLuR_
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Posted 26 January 2007 - 02:00 AM
Grabbing a catalogue, pinning it to the wall, and throwing a dart will give you equally good results.
Said it a thousand times, do one of the cam manufacturer's surveys and you'll end up with a cam that suits your driving needs.
Said it a thousand times, do one of the cam manufacturer's surveys and you'll end up with a cam that suits your driving needs.
#4
LS1LX
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Posted 26 January 2007 - 09:14 AM
The car isnt registered and doesnt clock up many km's, but I just want a decent engine something that goes better then how it did stock, was very dissapointed, thought L34's were ment to be quick in stock form.
I might go the new 226 or get Tighe cams to spin up a custom cam.
I might go the new 226 or get Tighe cams to spin up a custom cam.
#5
_HatchmanSS76_
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Posted 26 January 2007 - 09:20 AM
The Crane 286 is very common/popular for a 308 street engine. Can't go wrong with that one.
#7
_Yella SLuR_
_Yella SLuR_
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Posted 26 January 2007 - 10:11 AM
Hey hey hey, yeah, although not an L34, had the same experience, car went like a dog when I first bought it, which in hindsight was prolly good, as it meant peeps couldn't flog the crap out of it before I bought it....... something that goes better then how it did stock, was very dissapointed, thought L34's were ment to be quick in stock form.
For what it's worth, I believe this is the same/similar cam to the VK Police Special cam, although that wasn't what it was based on.
CamTech 517(ordered from Crane but ended up being a Camtech, don't know how that works). Rev range is 2,000-5,000 RPM. 274 duration, intake & exhaust, 218/218 degree 0.50" lift, Lift at cam 295/295, 0.60" cam lift at TDC, lobe separation 110 deg. Intake open/close 27/67, Exhaust open/close 66/28.
Thing that sold me on the cam was mild lope at idle, no modifications required in the catalogue description. Good general all round cam.
Don't skimp on it, and get your valve springs checked as well. The thrill of a new cam can be severely dampened by weak valve springs. It'll all feel like new once you done that.
#8
_greenmachine215_
_greenmachine215_
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Posted 26 January 2007 - 12:06 PM
I ran the crane CH304 Hydraulic cam in my old 253, and it was a bit of a pig with the 4spd, but once it was in the rev range it was pouncy and could wind out to 6800 rpm pretty easy 7 if u push,
Depends what style of driving you want aswell, I know lots of people that swear by the 286 stick
Depends what style of driving you want aswell, I know lots of people that swear by the 286 stick
#9
_1QUICK LJ_
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Posted 26 January 2007 - 02:36 PM
the crane H226 will out power a 286crane and is more driveable also. it doesnt need many mods either. but you need decent valve springs that will take 500 valve lift.
#10
_1QUICK LJ_
_1QUICK LJ_
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Posted 26 January 2007 - 02:45 PM
(yellaslur quoted)CamTech 517(ordered from Crane but ended up being a Camtech, don't know how that works). Rev range is 2,000-5,000 RPM. 274 duration, intake & exhaust, 218/218 degree 0.50" lift, Lift at cam 295/295, 0.60" cam lift at TDC, lobe separation 110 deg. Intake open/close 27/67, Exhaust open/close 66/28.
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i wouldnt run that cam thats too small with 10.1 comp. i take it by your combo there that its a reasonable combo, do yourself a favour go the H226, get it dyno tuned, you will be impressed, it suits your combo perfectly. power range is 2500-6500. its a 12 second potential cam easy with the right gear. it has actually pulled a 11sec pass on a good combo before. it has a nice little cammy idle but not over the top.
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i wouldnt run that cam thats too small with 10.1 comp. i take it by your combo there that its a reasonable combo, do yourself a favour go the H226, get it dyno tuned, you will be impressed, it suits your combo perfectly. power range is 2500-6500. its a 12 second potential cam easy with the right gear. it has actually pulled a 11sec pass on a good combo before. it has a nice little cammy idle but not over the top.
Edited by 1QUICK LJ, 26 January 2007 - 02:53 PM.
#11
_Yella SLuR_
_Yella SLuR_
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Posted 26 January 2007 - 07:04 PM
^ see I didn't want or need 12 second passes, just a cruiser with a bit of punch and circuit work. It suits that purpose perfectly. As said many times previous, do your research. I took over 6 months to decide on that Cam after much reading, doing manufacturer's surveys, and talking to the tech heads I trust. The research has paid off, and the cam suits what I want in my car, and how I use it to a T.(yellaslur quoted)CamTech 517(ordered from Crane but ended up being a Camtech, don't know how that works). Rev range is 2,000-5,000 RPM. 274 duration, intake & exhaust, 218/218 degree 0.50" lift, Lift at cam 295/295, 0.60" cam lift at TDC, lobe separation 110 deg. Intake open/close 27/67, Exhaust open/close 66/28.
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i wouldnt run that cam thats too small with 10.1 comp. i take it by your combo there that its a reasonable combo, do yourself a favour go the H226, get it dyno tuned, you will be impressed, it suits your combo perfectly. power range is 2500-6500. its a 12 second potential cam easy with the right gear. it has actually pulled a 11sec pass on a good combo before. it has a nice little cammy idle but not over the top.
I also don't run 10:1 compression, only 9:1 --> LH.
#12
_1QUICK LJ_
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Posted 27 January 2007 - 12:21 AM
yellaSLuR dude im not talking about your combo,lol. im talking about LS1LXs combo hes the one that asked about that cam and he's the one with 10.1 comp, i wasnt talking about your combo . 
sorry i should have mentioned i was talking to LS1LX.
sorry i should have mentioned i was talking to LS1LX.
Edited by 1QUICK LJ, 27 January 2007 - 12:23 AM.
#13
_Yella SLuR_
_Yella SLuR_
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Posted 28 January 2007 - 09:03 AM
Coolies, but proved the point that you need to do your research to achieve what you want from your engine. The cam controls the primary functions of your engine, so pays to get it right first time.
#14
LS1LX
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Posted 28 January 2007 - 09:07 AM
With cams you will never get a 100% correct grind first time, guys that race will R&D 10 or so cams, all which they think one may be better then the other, then they choose which best suits there needs.Coolies, but proved the point that you need to do your research to achieve what you want from your engine. The cam controls the primary functions of your engine, so pays to get it right first time.
You just need to get it as close as possible first time, but getting a cam 100% correct is a big ask for anyone.
#15
_[BOTTLEDUP]_
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Posted 31 January 2007 - 10:57 PM
Be careful with that valve lift given on the Crane site, it is for 1.6:1 rockers, NOT Holden 1.65:1... When you use the correct ratio the valve lift works out as follows:
0.518"/0.512"
That is too much for a std L34 type spring, you will need to either machine for double springs, or run a special Crane H11 spring, which is quite expensive.
Having said that it is a great cam grind, produces a lot of power and is very streetable. Ideally you'd run it with some 3.5s or 3.7s and either a manual or a 3000+ converter.
I'd run the Performer in a Holley/Quadrajet application, with twin 45 DCOE's I'm not too sure, maybe a Torker would be better suited? The factory A9X's ran the standard manifold because they HAD to, not because it was a great piece.
0.518"/0.512"
That is too much for a std L34 type spring, you will need to either machine for double springs, or run a special Crane H11 spring, which is quite expensive.
Having said that it is a great cam grind, produces a lot of power and is very streetable. Ideally you'd run it with some 3.5s or 3.7s and either a manual or a 3000+ converter.
I'd run the Performer in a Holley/Quadrajet application, with twin 45 DCOE's I'm not too sure, maybe a Torker would be better suited? The factory A9X's ran the standard manifold because they HAD to, not because it was a great piece.
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