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Topic Review (Newest First)
11-22-2007 04:01 PM
super_silent I seem to be leaning more towards the isky & crane as I'm hearing too many complaints about comp cams. I don't mind a little lope as long as it doesn't rattle the fillings out
of my teeth ! The car has collector plates on it so I have to stay with orig. intake and exh. manifolds and basically keep the car looking original.
I don't race the car, more of a summer street cruiser, but it's nice to have the extra kick there when you need it. Also want the engine to complement the new 3:55 gears and M20. The car originally came with 2:73's but was brutal off the line so I went up to 3:55's
The 3:55's made a difference but it's still lacking in torque. Now I've installed a 4 speed but haven't taken the car out yet, thought I would start on the motor while I'm at it. Thanks for all the pointers F-Bird !
11-22-2007 12:25 PM
super_silent Funny you should say that......I've alway's used Comp Cams and never had problems but a guy in town here who is well known for building HP engines won't touch anything by Comp Cams. He say's he's had a few fail on him and comp cams never did anything for him.
11-22-2007 10:57 AM
dawg I stay away from Comp cams
had nothing but problems with their junk.
11-22-2007 10:00 AM
super_silent Thanks everyone for all the info, with all the different cam grinds out there this will make things alot easier.
11-21-2007 01:38 PM
454C10 The 268H or the nostalgia or that second crane recommendation will run fine.

Head work is a real good idea. Bigger valves will help, but smoothing out the bowls after the bigger valves are put in is critical. Your heads will flow worst with the bigger valves if bowl smooth is not performed. Bowl smoothing is the low hanging fruit in cylinder head porting. You can pick up 20 easy hp with this procedure.
11-21-2007 12:11 PM
super_silent I'm really not that knowledgeable on lift and duration specs
but I'm looking for something to squeeze out a few more horses without a really lopey idle. I don't mind a little lope but the car has power brakes as well. I'm also considering getting some work done on the heads as well, I think the heads have 1.94 or 1.96 valves, which I'd like to change to 2.02's
11-21-2007 11:31 AM
454C10 I looked up the specs on compcams website.

258/265 advertised duration
211/218 duration at 0.050"
112 LSA
0.426"/0.420" lift

This cam will have a good idle. I wish the lift was around 0.450" and the LSA was 110.

A 268H has 268/268 advertised duration
218/218 duration at 0.050"
110 LSA
lift is around 0.450" ( i forgot).
It also has a little lope and will make power to 5800 with a 327. The 110 lsa with help the low speed torque.
11-21-2007 10:39 AM
MI2600 Comp's "Nostalgia" cams came out a couple years ago, but never got a big splash. I think Summit used to offer them. I could never figure out how they could offer the performance of the older cams with newer technology, i.e. different grinds. Maybe I missed something.

Anyway, I believe the 300hp factory cam was just the old "929". I've found a good replacement is the "151" mentioned above: 222/222 @ .050 and .447 lift.
11-21-2007 10:14 AM
coldknock Here are a couple you may consider if a rumbly idle is your goal, without giving up much torque. They're older grinds that are easy on the valvesprings and not noisy at all.

Crane 100172

Crane 100052



Larry
11-21-2007 09:59 AM
johnnya I don't think you'd notice any difference between the original cam and the 300HP cam. Probably the same cam, if you're talking factory cams.
If you want a little more cam, you might want to try the 350HP cam. I think the last 3 numbers of the original 350HP cam were 151.
It'll give you a little bit of a lope, but is very streetable, especially with a 4 speed. Or you would get about the same effect with any of a number of more modern grinds, such as any of the cams mentioned earlier.
JA
11-21-2007 09:39 AM
super_silent
Quote:
Originally Posted by 454C10
Sorry, I haven't used one of those cams. What are the specs?
advertised duration?
duration at 0.050"?
LSA?
lift?

What is the 327's compression ratio?

I would use an old school compcam 268H. Those new high lift flat tappet cams tend to go flat quickly, especially with todays reformulated engine oil. I'll give up a few horses to allow the cam to live longer than a month.

Use diesel engine oil or an EOS additive with your new cam.

The 327 is pretty much stock, it has the camel hump heads on it and I believe the compression ratio is 10 : 1
I've had the quadrajet slightly modified and added a pertonix distributor & coil.
Here are the specs on the Nostalgia cam:

Product SKU: CAM CL12-670-4
HYDRAULIC-Sound of GM 300HP camshaft with improved power and performance.
Intake/Exhaust Lift: 426/420
Intake/Exhaust Adv. Duration: 258/265
RPM Range: 1000-5500
11-21-2007 07:59 AM
454C10 Sorry, I haven't used one of those cams. What are the specs?
advertised duration?
duration at 0.050"?
LSA?
lift?

What is the 327's compression ratio?

I would use an old school compcam 268H. Those new high lift flat tappet cams tend to go flat quickly, especially with todays reformulated engine oil. I'll give up a few horses to allow the cam to live longer than a month.

Use diesel engine oil or an EOS additive with your new cam.
11-21-2007 01:17 AM
super_silent F-Bird,
what is the comp cams #12-208-2 idle like ?
11-21-2007 12:44 AM
super_silent
Anyone try Comp Cams Nostalgia Cams ?

I just swapped my 67 camaro from an automatic to a 4 speed (M20 wide ratio) the car has a 12 bolt with 3:55 gears. the motor is the original, stock 327, 275 HP
I'm going to be doing the top end on the car and called comp cams to see what cam they suggested, the guy told me to go with their new Nostalgia 300 HP cam. I've never heard of this cam till now and was wondering if anyone has tried one or what peoples thought's were on these cams or any suggestions on a good cam with good torque.

Thanks !

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