Now that I did the 3.4 swap I want MORE POWER. I was thinking of doing a cam and lifter upgrade but don't know much about different cams. I am looking for something that will get me higher than 4500 Rpm's something where I can feel a big improvement. If any one else has any other power adders I can try or look into that won't cost me an arm and a leg, let me know. I have heard of cams for the 3.4 that range from 2k-6k Rpm's but I don't know where to get it. Autozone and other local parts stores can only get the stock cams. And all Jegs has is stock also. I can't find anything on Summits site or JCWhitneys. Well, just let me know.

 

Try here

Crane Cams,

and In here search/inquire about 3.4 cams.

 

You will find maybe 5 cams for true 3.4l engine. If your not running the dis ignition, search the 2.8 and 3.1 cams.

In the s-series trucks, then crane 2030 seams to be the :hail:

Around here, the orginal 3.4l cam seems to be favored.

 

I got a crane cam that I never put in my car. And I did the 3.4 swap. If you are interested I ll sell you the one I got. All I did was open the box too check the contents. Thats it. PM me for more info.

Dean

 

hey, what's the specs on that crane cam?

 

2030 series:
Duration @.050...Duration....LSA...Gross Lift
214..............274.........109....423

GM Perf Parts #12363220
Dur Int/Exh @.050..Duration....LSA....Grosslift Int/Exh
204/216.........................107....427/.454

These are w/factory rocker ratios.

also, here is a
LINK to check out if you plan to put the 2030 cam in w/a DIS ignition, for those who might be doing that full swap.

 

what are the stock specs on the cam for the 3.4 and how much more can you get out of these aftermarket cams?

 

I found a Cam that goes from 1-5k and redlines @ 6k. but its for non imission controled 3.4's Now why wouldn't that work.. Is there a way I can make it work

 

most likly the reason that it's for "non-emmissions" vehicles only is because they didn't want to spend the money to get the E.O. number. That's the most likly reason. You can make ANYTHING smog legal if you try hard enough, short of actually removing external parts that is, because then you fail the visual. Anyway, you can make motor pass the sniffer with the right combination...maybe not on the first try though.

 

The best way to go with a 3.4 cam is to have Comp custom grind you a cam with these specs. Duration at .050 In. 212 Ex. 218 Lift with 1.5 ratio rockers In. .440 Ex. 454. LSA 110. Comp's best off the shelf cam is 16-233-4 Duration at .050 In. 212 Ex. 212 Lift In. 440 Ex. 440. GM's 12363220 ground by crane should also be considered Duration at .050 In. 204 Ex. 216 Lift In. .427 Ex.454.
Any of the above cams will preform better with Comp 1414-12 1.6 ratio rockers. Use GM valve springs 12363215 they are better than Comp 980.

 

I don't have to worry about smog tests. They don't have them here in my area. Like I said before I don't know much about cams. Would these be good. like I said they are for "non-emisions" controled vehicles
--------------------------------------------------------------------------------
6. PowerMax Mechanical Lifter Camshafts for Non-Emissions Controlled Vehicles


Application Series & Grind Number
Fair idle, daily performance usage, good low and mid-range torque and HP, 3200-3600 cruise RPM, 9.5 to 10.75 compression ratio advised. Basic RPM 2500-6000 PowerMax
F-228/3067-2-12

Cam Specifications


Degrees Duration @ .050 Int./Exh. Degrees Advertised Duration Int./Exh. Degree Lobe Separation Open/Close @.050" Cam Lift Int./Exh. Lash Hot Int./Exh. Gross Lift Int./Exh.
228
238 290
300 112 7 4
56 2 .022
.022 .460
.480

Valve Train Components

Camshaft 250801*
*
Lifters 99250-12 *
Valve Springs 99838-12 Must machine cylinder heads with 99402-1 machining tool and 99027-1 arbor.
Retainers 99944-12 *
Valve Stem Seals 99820-12 Must machine cylinder heads with 99402-1 machining tool and 99027-1 arbor.
Valve Stem Locks 99041-1
99097-1 e e Machined steel, heat treated.
Pushrods 25621-12 For cast iron inline-valve cylinder heads, heat treated, for use with pushrod guideplates.
Gold Race Rockers 25750-12 g
25759-12 h g 1.5 ratio, narrow body (not self-aligning), with special 10mm x 1.50 bottom x 3/8" x 24 top rocker arm studs included.
h 1.6 ratio, narrow body (not self-aligning), with special 10mm x 1.50 bottom x 3/8" x 24 top rocker arm studs included.
* This product is applicable only to pre-1966 California and pre-1968 federally certified passenger cars. It is also applicable to non-emission controlled trucks and similar vehicles. It is not applicable or intended for use on any emission controlled vehicles operated on highways or roads.


--------------------------------------------------------------------------------
7. PowerMax Mechanical Lifter Camshafts for Non-Emissions Controlled Vehicles


Application Series & Grind Number
Rough idle, performance usage, good mid and upper RPM torque and HP, 3800-4200 cruise RPM, 10.5 to 12.0 compression ratio advised. Basic RPM 3800-7200 PowerMax
F-248/3334-2-12

Cam Specifications


Degrees Duration @ .050 Int./Exh. Degrees Advertised Duration Int./Exh. Degree Lobe Separation Open/Close @.050" Cam Lift Int./Exh. Lash Hot Int./Exh. Gross Lift Int./Exh.
248
258 310
320 112 17 51
66 12 .022
.022 .500
.520

Valve Train Components

Camshaft 251241*
*
Lifters 99250-12 *
Valve Springs 99838-12 Must machine cylinder heads with 99402-1 machining tool and 99027-1 arbor.
Retainers 99944-12 *
Valve Stem Seals 99820-12 Must machine cylinder heads with 99402-1 machining tool and 99027-1 arbor.
Valve Stem Locks 99041-1
99097-1 e e Machined steel, heat treated.
Pushrods 25621-12 For cast iron inline-valve cylinder heads, heat treated, for use with pushrod guideplates.
Gold Race Rockers 25750-12 g
25759-12 h g 1.5 ratio, narrow body (not self-aligning), with special 10mm x 1.50 bottom x 3/8" x 24 top rocker arm studs included.
h 1.6 ratio, narrow body (not self-aligning), with special 10mm x 1.50 bottom x 3/8" x 24 top rocker arm studs included.


And also Can I put roller rockers and a roller Cam in?

 

These two Crane cams are very " heavy duty". They can only be used with a carburated engine with a 4 barrel and headers. The second cam you mentioned would have to have a engine built for it with forged popup pistons. It would not be very streetable.
manufacturer part no. In. Duration at .050 Ex. In. Lift Ex.
Crane 2030 204 214 .423 .423
Edelbrock 3790 or 204 214 .420 .442
GM 12353919
Crane H-260-2 or 204 216 .427 .454
GM 12363220
Comp 16-233-4 212 212 .440 .440
Comp Custom 212 218 .440 .454
Crane H-272-2 216 228 .454 .480
Crane F-228/3067-2-12 228 238 .460 .480
Crane F-248/3334-2-12 248 258 .500 .520

The above cams are from mild to wild. I will call the top (mild) one and the bottom (wild) eight and everything between in order. Cams 1&2 are definately no problem with fuel injection. Cams 3.4& 5 can probably be run with fuel injection. They will need upgraded programing and headers. Cams 6,7& 8 can't be used with fuel injection.Cams 1-6 can use GM valve spring 12363215. Cams 7&8 require machining on the valve seat and valve guide boss to use Crane 99838 valve spring and Crane 99820 valve seal. All of the above cams need a good set of rockers. The Crane Gold 25750 (1.5 ratio)& 25759 (1.6 ratio) are definately better than the Comp 1413(1.52 ratio)&1414(1.6 ratio)since the Crane's are full roller and the Comp are roller tip. The Cranes are much more expensive. I still like my custom ground Comp with a set of Comp 1.6 ratio rockers. As for RPM ranges cams 1,2&3 1500-4500, cams 4&5 1500-5000, cam 6 2000-5000, cam 7 2500-6000, cam 8 3800-7200. The choices are many. Are you running fuel injection or a carb.? Good luck. I will discuss this more with you if you want. The Crane rockers are $377 and the Comp rockers are $136 at Jeg's.