Horse Power
Racer
Joined: Mar 2008
Posts: 389
Likes: 2
From: Austin Tx
I found this too. You can check your engine serial number as well, the last two characters
HE = 327-cid 300-hp V-8 with 10.0:1 compression ratio, manual transmission, and four-barrel carburetor
HO = 327-cid 300-hp V-8 with 10.0:1 compression ratio, Turbo Hydra-Matic transmission, and four barrel carburetor
HP = 327-cid 300-hp V-8 with 10.0:1 compression ratio, manual transmission, four-barrel carburetor
HT = 327-cid 350-hp V-8 with 11.0:1 compression ratio, manual transmission, four-barrel carburetor
HE = 327-cid 300-hp V-8 with 10.0:1 compression ratio, manual transmission, and four-barrel carburetor
HO = 327-cid 300-hp V-8 with 10.0:1 compression ratio, Turbo Hydra-Matic transmission, and four barrel carburetor
HP = 327-cid 300-hp V-8 with 10.0:1 compression ratio, manual transmission, four-barrel carburetor
HT = 327-cid 350-hp V-8 with 11.0:1 compression ratio, manual transmission, four-barrel carburetor
Pro
Joined: Jun 2004
Posts: 561
Likes: 1
From: No longer in Heaven
The engine was stamped with the 2 character engine suffix code along with the build date at the engine assembly plant. I don't know exactly the location of the stamp pad on a small block, but since you say it is the original engine, the pad should have both the engine build date and suffix code (which will tell you which HP it was) and also the VIN derivative stamped next to it. Much easier than tring to find your tank sticker or build sheet.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Drifting
Joined: Mar 2009
Posts: 1,461
Likes: 361
From: Monson MA
Engin Code
Here are a couple of pictures showing the code and it's location. I went out to my garage and took them aftewr reading this post. Hope they help. This is my 1968 project and the code show HT
[IMG]
[/IMG]
[IMG]
[/IMG]
Sorry for quality, I used my cell.
[IMG]
[/IMG][IMG]
[/IMG]Sorry for quality, I used my cell.
Burning Brakes
Joined: Sep 2008
Posts: 805
Likes: 5
From: Naperville Illinois
Why do you say that? The difference between gross and net HP is typically between 10% and 30% (both are measured at the flywheel) and if he's running without a smog pump and in any kind of tune, why wouldn't he get over 200hp? Or do you mean at the wheels?
Melting Slicks
Joined: Jul 2007
Posts: 3,352
Likes: 1
From: Westminster Maryland
I expect my build is putting out 360-400 hp. 327 HE, built up with 10.5:1, some other goodies inside. I hope to get it to a dyno and find out for sure soon. 
Racer
Joined: Mar 2008
Posts: 389
Likes: 2
From: Austin Tx
You can get some amazing power out of 327/350s.
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
Burning Brakes
Joined: Jul 2006
Posts: 1,108
Likes: 0
From: Sebastian Florida
Le Mans Master
Joined: Dec 2004
Posts: 5,230
Likes: 418
Note that there was a 165HP Corvette in that era - the 1975 base engine - and it was considerably slower and far more smogged up than any of the earlier base engine cars.