what is the best performance cam for a 327?
can someone give me the specs?

This is what I am using on mine and am very happy:
ISKY CAMS
264-MEGA HYDRAULIC
Valve Lift - INT.450
EXT .450 Valve

This is what I am using on mine and am very happy:
ISKY CAMS
264-MEGA HYDRAULIC
Valve Lift - INT.450
EXT .450 Valve
how does it sound? is it pretty lopey or agressive sounding?

what is the best performance cam for a 327?
can someone give me the specs?

What 327 do you have?

it was just a base 210 now its been re built, the heads have been modded they have 75cc chambers and had 1.72 valves now have 1.94. i bought the car with a 5 grand rebuild on the motor never been ran trust me i checked. this christmas i plan to get new heads and cam, the pistons are flattop alumnium. in about 3years i plan to build a 377 de-stroker but for what im using the car for now a high horse 327 will be fine.

I have an L30 Put in this cam last year. Very happy with it. Lunati #00016

Bracket Master II Chevrolet Small Block (1957 – Present) – The Bracket Master II Camshaft is the logical choice for some high performance street machines and mild performance Bracket racing applications. They provide excellent power over a broad power band and give that lopey idle so many people like. Hydraulic; Good idle. Good low end torque and horsepower. Works well with stock stall converter.

Advertised Duration IN/EX: 284/284
Duration @.050 IN/EX: 218/218
Gross Valve Lift IN/EX: .458"/.458"
Lobe Sep Angle / Intake Ctr Line: 110/106
Valve Lash IN/EX: Hyd/Hyd
RPM Range: 1500-5200

I had a 327 like you describe, mine was in a '64 Chevelle. I put in a Crane "Fireball" cam and man, that thing was terrific. I would power-shift at 6,500 rpm. It pulled good all the way to the red-line. This was 25 years ago, and I don't know if they still make that cam. They probably have "new, improved" versions of it though......

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that sounds sweet! theres nothing better then a high reving motor... thats what im going for soon it will have ither afr's or some type of edelbrocks maybe e-tec's, a victor jr. intake. the cam is the hard part...
what do i measure the duraton with the advertised or at .50" lift? say if i wanted 268/268 duration? im tired and confused lol...

Man, cam selection is an art-form. The cam is the real heart of the engine, but it can't pump good unless all the other components are matched to it.

Cam selection is virtually limitless. For someone to make viable, realistic recommendations, you'd really need to post a detailed engine setup, the driveline setup, and your own expectations or desires.

For instance, I had the Crane Fireball cam in a '64 Chevelle, with 4.10 posi rear, 4-speed Muncie tranny, 327 (275 base hp) engine with the Camel hump heads, Edelbrock intake, Q-jet (race-prepped) carb, tuned headers, 10 to 1 compression. This combo worked real nice, but again, this was 25 years ago.

Bottom line: select cam carefully. If you install the wrong cam, it's very easy to end up with LESS performance than you had to begin with............

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yea, most people love the lopey cams, like the 307 can be a great motor but u really need to steer away from the big aggressive cams. im gonna call the machine shop and see what all they did to it.

Call Isky and give them all your specs and what you are looking for. They will tell you exactly what to put in it. Great customer service.

it was just a base 210 now its been re built, the heads have been modded they have 75cc chambers and had 1.72 valves now have 1.94. i bought the car with a 5 grand rebuild on the motor never been ran trust me i checked. this christmas i plan to get new heads and cam, the pistons are flattop alumnium. in about 3years i plan to build a 377 de-stroker but for what im using the car for now a high horse 327 will be fine.

75cc chambers on a 327 with flat-top pistons? This will result in less than 8.5:1 compression and will result in less than stellar performance with any cam that you might want to listen to at idle. What new heads are you planning to get?

I agree with Emperor, your best bet is probably to call the different cam manufacturers, give them all your specs, and see what they recommend. That should get you pretty close...................


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75cc chambers on a 327 with flat-top pistons? This will result in less than 8.5:1 compression and will result in less than stellar performance with any cam that you might want to listen to at idle. What new heads are you planning to get?

Well, said. With small cubes, low CR, I would try and keep duration under ~260 (~210 @ 0.050) or it will be a dog on the street. A cam like this won't have a choppy idle.

I believe the listed compression ratio for 67-68 camaro with 210 hp 327 was 8.75:1 (1.72/1.5 valves, 75 cc chamber). The listed compression ratio for the 275 hp version was 10:1 (1.95/1.5 valves, 63 cc chamber). Did both of these engines use the same cam?

My replacement cam (.436 lift, 222* dur @ .050, 265* adv dur) seemed to add some pep when the engine was rebuilt.

Yes, should be the old -929 cam or it's earlier version there-of!

Add a set 62 to 64 cc double-humps and a 4-barrel intake and dual exhaust to the 210 motor and I figure it turn's into the 275hp motor.. If not the 300hp motor.

Who know's for sure??

pdq67

Who know's for sure??



The Shadow knows.....

PDQ... 210hp and 275hp shortblocks were the same (including cam). The only difference was heads and intake/carb. I believe the 275 had single exhaust too.

The only difference between the 300 and 275, was that the earlier 62-65 300hp used an AFB, while the 275 had a q-jet. The full size cars (Impala) also used 2.5" rams horns, while the 275 had 2". Chevelle and Nova 300 hp both used 2".

If you REALLY want to split hairs, the 62-66 engines used a cam that was 198/198 @ .050", .398/.398 lift. The '67-up engines used the 929 cam (195/202, .390/.410).

There is so many company out make cams for chevy small block I would check youtube where you can here a few cams in the 327 and chat with the guys. And talk to few cam companies. I went with a Schneider Cam 288-96H grind 0.50 230/238 - 288/296 lift 485/492 3000 - 7200 rpm it's in a 82 camaro 327 30 over 202/160 valves head 780 holley carb steel crank 4 speed manual 373 gearing and run this on the street and run out of town with the car.

I have a 327 bored 30 over , edelbrock RPM Performer alum heads, air gap intake 650 holley and dynamax headers and one of comp cams high energy cams , cant recall the exact cam right now but she revs super fast and with the 4 sp and 373 rear I can smoke the tires off it if I wanted to. Not real loppy but the pipes talk to ya pretty nice threw my flowmasters and x-pipe.

I wish I knew the specs on my cam!....All I know, it's got a very choppy idle @ 1000 rpm and hauls balls all the way up to 7200 rpm!:yes::cool:

I really like my Lunati VooDoo 268 cam. Great power, semi lopey idle.......

Do your self a favor though and DON'T buy a gear drive.............:sad:

It will drive you nuts.

Man, anyone that likes a gear drive has cam bolts in their head;)


(Sorry BADBIRD could'nt resist....LOL :beers:)

Man, anyone that likes a gear drive has cam bolts in their head



LOl LOL LOl LOL :hurray::hurray::hurray::hurray::hurray::beers:

Geez, this thread is over 2 yrs old!
I bet a 268 would be the optimum cam for a some what stock grocerie getter, thats what I had and it had tons of low end grunt around 4,700rpm.
Now with a 286 in a 327 with higher compression and what not I find it very easy to glance down doing over 6krpm and still feels like it's not pulling as hard as the old cam at 4,700rpm
268* seems optimum but 280*+ duration seems to be the magic number for a choppy idle and major rpm's.

Belt drives or true dual rollers FTW.
Noisy gear drives= Power steering pump out of fluid.

A right at 10 to 1 CR'd 327 will love any one of many 268/270/272 hy-cams!

Get her up to 11 to 1 and the 288/290/292 cams run great, imho!

And I will only run solid lifter cam's in the little shorter-stroked SB's b/c they LOVE to rpm!

A hopped up 10 to 1 CR'd 300hp/327 and an old Isky Z-25 and go; and

A 365hp/327 type engine at 11 to 1 CR. and an old Isky Z-30 and GO!!

pdq67

PS., and I call the old Crane/Cam Dynamics 272/272 Energizer, the old "Fireball" cam even tho in older times, it's been made in 290 and 304(?) advertised numbers.. The old mildly hopped up 300hp/327 I gave my Nephew had it in it and I'm here to say that it ran like a "scalded-dog"!!!!!!!!

I went back in w/ a New Old Stock G/K 270/218 that I bought years and years ago off Hollywood Sam's in Detroit!.....

Does anybody know anything about the Holley SysteMax ll? It comes with a Lunati hydraulic camshaft (duration @ .050" 235/240, lift .490"/.490")

I'm a gear head and why I went to gear drive, dp chain over time had play in it. And at Budds Creek Race Way 4 chains pop at the drag trip tour the of the motors up. I do have the blower sound. The motor has now about 1400 miles on a complete re-build.

Car I have 84 mazda ZX7 with mopar 372 motor, 84 Chevy S10 350 40 over motor L98 TPI, 82 camaro 69 327 30 over motor. MY fist hot rod 65 SS 327 impala back in the day.

Imho, a 235/240, .490" hy-cam is too big for a 327 unless you are up at 11 to 1 or maybe higher.

What's it's advertised spec's and then I can say for sure?

pdq67

(http://store.summitracing.com/partdetail.asp?part=HLY%2D300%2D503%2D1&autoview=sku) this is where I found the kit.

I'm a gear head


All right man!:thumbsup:....That makes two of us!:yes::hurray::thumbsup:

check out youtube.com to here the motor - http://www.youtube.com/user/kzkicking
Had about all together over 16 drag cars over the years build them and sale - move on to the next car...

Imho, a 235/240, .490" hy-cam is too big for a 327 unless you are up at 11 to 1 or maybe higher.

What's it's advertised spec's and then I can say for sure?

pdq67
Pdq, you do know this is an old old old thread and from when I posted this until now I have already pretty much built a whole new 327 right?
Anyways, 10.8:1-11:1 depending on which calculator you use .040" 327 aluminum heads and so on and so on.
the cam has 236* duration at .050" .490 lift on a 110lsa. It's big for a 327 but not too ridiculous. Though I have had a few problems with the new set up it pulls well in the upper rpm band, just not very stop light friendly. Will be when I finally get some decent rear end gears an an over drive manual trans.
If I ever rebuild it i'd shave the heads more and maybe take a gamble and run a .015" gasket to get higher than 11:1, or just throw more money at it and get small domed slugs. I do agree though, 280*-290* cams work much better with 12:1 or bigger cubed motors.
http://store.summitracing.com/partdetail.asp?part=CCA-CL12-326-4&autoview=sku

Sounds to me like you have a comp 282s if it is a solid lifter cam-236-236-.495-.495 lift 110 lsa which would work well in your combo. This cam actually acts smaller like all solids do. They say for every .001 in valve lash you lose one half degree of duration. A comp 282s and a comp 280 Magnum in a 350 motor made about the same horsepower but the solid cam had better low end. The crane 274H06 would work well in your combo, 218-218 .450-.450 lift 106 lsa. A good rump rump cam with small duration. My buddy has one in his 8.5 cr 350 crate motor with stock everything except headers, edel. intake and carb,4 speed and 3.73 gears. Has a really mean idle at 1000 rpms and pulls 14" of vacuum.

(http://store.summitracing.com/partdetail.asp?part=CCA%2D12%2D242%2D2&autoview=sku) any thoughts on this cam?

I think, I started the rest of post did not catch the date, just my thoughts - 235/240 lift 490 is a nice size cam people will no you well at a stop light. 10.0 /10.5 pistons 64cc heads valves 1.94 / 1.50, 1.74 sq.in intake port cross section, 170cc intake port 650cfm carb air gap manifold high rize RPM edelbrock,a nice ignition to the spark plugs. You may
This set up was other 327 small very close to the cam specs 235/240 and works well...
I good place to start is call holley if it there cam and tell them your set up and what you like to do with it.... Happy Turkey Day you all...

"O" there's guy running a 327 30 over 9.5 pistons rebuilt motor 4 carbs install cam specs
230/230 at 0.50 gross duration 288, lift 485 lobe separation 108 rpm 3000 to 7000 should be about 7200rpm in the 327 on youtube if like to here it plus you can email him for more info..
YouTube - 22 w/New 327 and Schneider cam

I'd go w/ the 268 VooDoo instead!

I was typing when the vid was posted.

I want to say that he need's to modernize those old, I think(?), Stromberg 94 or are they 97 leaker's... Rochester 2G's and 2GC's are better carb's., imho...

But they are still way "Old-School" cool by me, and I want a Man-A-Fre Port Induction 4x2 intake system!

pdq67

The carbs look good on the motor but you right not the best for hp, I have motorbooks
workshop horsepower hand book, they compairing 10 types manifolds from 4x2s 2x3s to strombergs types. hp drop on the same 350 30 over motor by 20%., The worst thing that can happen is buying a cam and not happy with it. Me I love the chop idle. The 327
cam I would talk to a few cams companies and hop on youtube to here a few that install
in the 327 and talk to a few other guys to see how they like there cam.

If cam cackle is that important, then please consider the cheap roundy-round cams that are ground on 106/102 centers! Even 104/100!

Contact Delta and ask them if they would spec and then price one of their regrind cams like these on your good core and see what they say.

Suckers cackle big-time and run fine but tend to be way peaky at max power, then drop off.

pdq67

PS., I personally won't go closer than 108/106. And going the other way, 111/111 is a good balance of topend vs cackle.

I'm set the was rebuilt 6 month ago, 327 30 over bow tie 180 heads 205/160 valves ported 198cc 68cc chamber, forge butter fly piston, forge rods these made at a michine shop and cryo heated, cam is scheinder dur-gross 288/296 0.50 230/238 lift 485/492 roller cam, rocker arms 1.6, manifold rpm air gap cut off added 3/4 tall, holley 780 cfm,steel crank blue printed bottom end, gear drive motor no more chains give to slack through the timing off some most people don't this can happen under hard use. MSD heat the plugs up, 10 pound fly wheel cryo heated 11" 4 speed manual, rear end rebuilt
373 posi rear. The car 82 camaro 69 corvette motor. The shop I use the most is Super Car Automotive Parts Service Dyno Custom Engines, Malcolm Durham is brother Donald Durham is running the ship now in MD 1-301-277-1041. If those of don't no who is Malcolm Durham just type in the search bar - http://www.draglist.com/artman/publish/daily_pictures/article_001750.shtml
There's lot of info on the net him.
They have work on 11 of my cars from the 70s up to now.