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View Poll Results: how much horsepower from a 327
how much horsepower from a 327 2 50.00%
how much horsepower from a 327 2 50.00%
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Old 02-06-2005, 08:51 PM
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how much horsepower from a 327

I have a 1966 chevy 327 with double hump heads (1.94 valves). It also has a rv cam, headers, and performer intake with a 600 cfm carb. It's bored .30 over and i was wondering if anyone would know about how much horsepower it will have.

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Old 02-06-2005, 09:02 PM
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327

Appx 225.
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Old 02-06-2005, 09:37 PM
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327 chassis dyno results

This is my combo with results from a recent chassis dyno(rear wheel numbers).

327 ci SBC bored 0.040 over, balanced
Edelbrock RPM Alum. heads 2.02/1.60, 64cc chambers
KB156 pistons, 7cc valve reliefs
9.6:1 SCR
8.1:1 DCR
Performer RPM intake
Carter AFB 600 cfm carb.
CompCams XE262-10, 218/224, 110 lobe sep., .462/.469 lift
CompCams roller rockers 1.52:1
Block decked to 0.010
Head gasket 0.028
1 5/8 Heddman full headers
Flowmaster series 40 mufflers
Stock Muncie 4-speed

Chassis dyno with 461 heads produced 261 hp at 5500 rpm and 312 ft. lb. torque at 3700 rpm.

Same combo with Edelbrock RPM heads, produced 289 hp at 5800 rpm and 321 ft. lb. torque at 4000 rpm. I squeezed out an additional 10 hp by tweeking the Eddy carb. I may go to a Barry Grant 575 cfm for another 10-15 hp.
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Old 02-07-2005, 10:07 AM
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I mean off the flywheel i think that 67' camaros had 275 hp with them heads, but that was stock. I have headers, 4 barrel carb, ands it bored .30 over. Does anyone know anything about a rv cam. How much better are they then a stock cam?
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Old 02-07-2005, 10:41 AM
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RV cams are built to run under 4000 in a heavy truck, so lift and duration are small. with a short stroke 327 in a light car (camaro) you can get away with more cam a Crane energiser 272 has .454 lift and 216 @.050 it is about the same size as the 300 hp 327 cam. I have this cam in a 350 in 4X4 awsome midrange and but of lope it pulls about 14 inches at idle (on a very old engine). Back in the 60's allmost all the cam were RV, 3/4 race or full race. Now with the cam selection the term RV is mostly never used. They are most commonly refered to as performance cams. Your engine about 220 but not any moe than that
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Old 02-07-2005, 01:26 PM
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Being a little clearer

A stock 350 is 225 hp with smogger heads and dished pistons. Since you are running 23 ci less (a minus) but low cc heads and possibly flat top pistons (a positive). I hit you with the appx the same hp.
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Old 02-07-2005, 01:56 PM
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it depends...some 327s had 275 HP . some were rated at 275...doesnt mean they actually had 275.
brack...some 350s had less than 180 HP.
levis, without knowing cam specs, compression ratio , Im gonna geuss at 225-250 HP
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Old 02-07-2005, 02:24 PM
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Smile

"sorry"

Last edited by J327HO; 02-07-2005 at 03:48 PM.
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Old 02-07-2005, 02:48 PM
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original posting

Original post was by levis 57.
I think J327HO should have started a new posting.
This is going to get confusing or turn into a dead thread Fred.
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Old 02-07-2005, 02:51 PM
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thats why I havent responded...also would help to know duration @ .050 & LSA
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Old 02-07-2005, 03:50 PM
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2nd motor, overcammed, overcarbed,powerband wont come in till way high, not a very streetable combo , extremely high rpm engine. In my opinion.
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Old 02-07-2005, 03:58 PM
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well ... .. thats good!! exactly what we are trying to acheive!
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Old 02-08-2005, 09:59 AM
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This 327 i have built is going in a 69' camaro. Do you think it will be pretty fast and maybe some low range torqe? The compression ratio is 10 to 1
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Old 02-08-2005, 10:23 AM
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With more cam and a decent holley or demon carb I would bet you could put 40-50HP to the wheels. You have the heads and that engine will love to run at 6500RPM.

Chris
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