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Discussion Starter #1
im gonna run a tonawanda 327. from what i understand it is a 275 hp motor with 10 to 1 compression with 64 cc heads. the heads are not double hump. im gonna run 884 heads for 76 cc chambers plus accessory holes. what would my compression be? also for a cam, i thought about this elgin, but i need some advice. im not looking for a power horse. i would like a notciable to rough idle with out to big of a stall. here is a link to the cam. i would like to stick to elgin because the price.

Elgin, Hyd. Flat Tappet Cam & Lifter Kit, Chev SB, .454/.454
Elgin, Hyd. Flat Tappet Cam & Lifter Kit, Chev SB, .454/.454
Chev SB
Lift: .454/.454
Adv. Duration: 272/272
Duration @ .050": 216/216
Lobe Center: 110
1500-5500, Noticeable idle, Stock converter OK

or this one
Elgin, Hyd. Flat Tappet Cam & Lifter Kit, Chev SB, .450/.450
Elgin, Hyd. Flat Tappet Cam & Lifter Kit, Chev SB, .450/.450
Chev SB
Lift: .450/.450
Adv. Duration: 274/274
Duration @ .050": 218/218
Lobe Center: 106
2000-5200, Rough idle, Low & mid-range, Good lift rule
 

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Why not run the 64cc heads? You'll give up a lot of power going to the 76's
I have that 272/454 cam in a 350 and it works well. With my ported AFR 210 heads, a Performer RPM/750 Holley combo it ran 7.60's in the 1/8 mi., but don't expect those kind of numbers using 884 heads! I also have 4.30 gears and a 6000 rpm converter, huge exhaust system,etc....
 

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Discussion Starter #3
because the compression would be to high and i wouldn't be able to get gas. and gas additive is to expensive since im a freshman in college. this car will get drove at least three times a week, plus the 64 cc heads need work and the others have new valves, seats, springs, etc. how is the idle with that 272/454 cam?
 

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I run just under 12-1 compression in my 410" and race it on 91 octane. No reason you couldn't run the same with 10-1.

The idle with that cam is hardly noticeable to me, but then, my current 260/[email protected] duration cam is the mildest I've had in over 10 years--I usually run [email protected], so that little 216° is like grandmas car!
If you want a cam that sounds badazz but is tame enough for a daily driver, look at Comps "Thumper" series. Of course they are a lot pricier than an Elgin, unless you can find a copy by Elgin. The cam I have is sold by Crane as an "Energizer", but I bet the Elgin version is WAY cheaper. I once had an Edelbrock RPM cam which was about 3 times more money than the same cam sold by Wolverine!
 

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This one might have a better sounding idle without being too much for a driver:
E1065P
Elgin
.458/.458 Lift - 218°/218° @ .050
$84.95 Each
12 LB
Product Description
Fits: 1955 to 1994 283ci - 305ci - 307ci - 327ci - 350ci - 400ci
• 284°/284° Adv. Dur.
• 110° Lobe Center
• 64° Overlap
• Idle Quality: Fair with lope
• Power Range: 2000 - 4800 RPM
• Good choice for light towing
• Recommended spring pressure 110lbs. for valve on seat; 280lbs. for valve open
• Compression: 10.3:1 or less
• Transmission: Stock auto or Manual
• Recommended for mild bracket racing

This is what Edelbrock sells as the Performer RPM cam:
E1067P
Elgin
.488/.510 Lift - 234°/244° @ .050
$69.95 Each--Lifters are $38.88--Total $108.83
12 LB
Product Description
Fits: 1955 to 1994 283ci - 305ci - 307ci - 327ci - 350ci - 400ci

• 300°/310° Adv. Dur.
• 112° Lobe Center
• 81° Overlap
• Idle Quality: Rough
• Power Range: 2200 - 5400 RPM
• Not recommended for towing
• Recommended spring pressure 120lbs. for valve on seat; 300lbs. for valve open
• Compression: 10.5 to 11:1
• Transmission: Stock auto or Manual with high stall converter
• Recommended for limited oval track

See the price difference? This kit does include lifters.$169.95
Brand: Edelbrock
Product Line: Edelbrock Performer RPM Cam and Lifter Kits
Part Type: Camshaft and Lifter Kits
Part Number: EDL-7102
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 1,500-6,500
Intake Duration at 050 inch Lift: 234
Exhaust Duration at 050 inch Lift: 244
Duration at 050 inch Lift: 234 int./244 exh.
Advertised Intake Duration: 308
Advertised Exhaust Duration: 318
Advertised Duration: 308 int./318 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.488 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.510 in.
Valve Lift with Factory Rocker Arm Ratio: 0.488 int./0.510 exh. lift
Lobe Separation (degrees): 112
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Computer-Controlled Compatible: No
Lifters Included: Yes
Lifter Style: Hydraulic flat tappet
 

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Discussion Starter #6
Elgin, Mech. Flat Tappet Cam & Lifters, Chev SB, .485/.485
Elgin, Mech. Flat Tappet Cam & Lifters, Chev SB, .485/.485
Chev SB
Lift: .485/.485
Duration: 314/314
Duration @ .050": 254/254
Lobe Separation: 114 LC
Lash Adj. .030 IN .030 EX
327-365HP/Z28, Duntov 30-30 (GM #3849346)

what about this?
 

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Here's a test of that cam in a 355 comparing Vortec heads and AFR 195's:
The specs on the test engine are as follows:


355 CID shortblock with approx. 10 to 1 CR (Note the AFR head had a slightly larger chamber volume netting less compression which was confirmed when each engine configuration was pump checked for cranking compression….the AFR headed combo pumped 15-20 PSI less depending on which cam was installed in the engine. The same CR would have made the results even more dramatic).

Comp Cams “Thumper” series cam grind # CS283T (227 deg / 241 deg @ .050 107 LSA)
Holley “Airstrike” dual plane intake manifold
Holley 750 CFM Carb
Hooker 1.75 dyno headers


Test Facility was Westech Performance group in Mira Loma CA

SF902 SuperFlow Dyno operated by Steve Brule



"A few things to note here….one which is important is that the Vortec heads were fitted with Comp 918 beehive springs so valve control issues were not part of the gains provided by the test results (you can see the Vortec headed graph is very clean and smooth till 6500 where the test was terminated). The AFR heads were equipped with our standard lightweight dual springs (PN 8017) and the standard equipment lighter weight 8mm beadlock valves and also showed no signs of valve control loss in the RPM range tested.

The second thing to note of more importance in this comparison is not only was the peak to peak power gains extremely impressive (57HP delta), but note how well the AFR headed engine carried that power after peak showing an improvement of 74 HP by 6500 (unfortunately the last recorded data in the test), which by the way would be a very usable figure if you were running the AFR’s. In fact, looking more closely at the results, the AFR headed combination generated the same peak power at 62-6300 RPM (453 HP), and was still making close to the same at 6500 (449 HP) where the test was terminated. This type of power curve would encourage shift points in the 6800 range so the really huge gains available past peak (which would have likely gapped over a hundred HP by 67-6800) is all very usable power that would translate into much lower ET’s and much higher trap speeds if taken advantage of by shifting approximately 500 past peak (a rule of thumb ultimately dictated by the shape of the power curve).
 

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Discussion Starter #9
the thumpr is a good cam but my budget wont allow that. i need something elgin from competition products.
 

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the thumpr is a good cam but my budget wont allow that. i need something elgin from competition products.
I have a comp cam in my 327 its just slighlty bigger than a 30-30 cam.
284 int 296 exh
.507int .510 ex on 1.5 rockers
240 adv int 246 adv exh
Its a 10:to 1 motor on 64cc heads.750 double pumper, I personally would go with afr 195 heads, or sportsman II .....Its also going to depend on what you want your car to drive like and perform.
 

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what about the copy the 274/450? it has a 106 lsa so it will be a rough idle.
It has a great small Adv duration so it will be good with a nice small stall conv.
That one will be good for a what you are looking for. Just my 2 cents:yes:
 
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