L-82 hp
Le Mans Master
Joined: Sep 2004
Posts: 5,116
Likes: 5
From: Livonia MI
Really not seeing anything you mentioned except the camshft doing much, and really not sure of the specs on that. I'd start with what you've already got, probably going with a cat free dual exuast, rejetting the existing Q-Jet carb, and go over the the distributor. Then see what you've got. Either way, I'd stay with the Q-Jet, throughout a build up.
Le Mans Master
Joined: Oct 2007
Posts: 7,444
Likes: 970
From: Tennessee/Rhode Island
Below are the video of my 78 L-82 4 speed on the dyno as well as the dyno sheet:
Engine is stock L-82 internals (66,000 miles) with:
McJacks Shorty headers
2.5 duals with Monza Turbo mufflers
Holley 4175 650 CFM Qjet with Softest secondary vacuum spring
Com Cams 1.5 roller tipped rockers
Stock Dual Snorkel L-82 intake housing and Stock L-82 Aluminum intake
Stock 882 heads
Stock L-82 cam
Dyno Sheet: 233 RWHP, NOT Net HP, Not Gross HP which would be MUCH higher than RWHP. 269 Rear Wheel Torque!
Engine is stock L-82 internals (66,000 miles) with:
McJacks Shorty headers
2.5 duals with Monza Turbo mufflers
Holley 4175 650 CFM Qjet with Softest secondary vacuum spring
Com Cams 1.5 roller tipped rockers
Stock Dual Snorkel L-82 intake housing and Stock L-82 Aluminum intake
Stock 882 heads
Stock L-82 cam
Dyno Sheet: 233 RWHP, NOT Net HP, Not Gross HP which would be MUCH higher than RWHP. 269 Rear Wheel Torque!
Instructor
Joined: Apr 2007
Posts: 142
Likes: 6
From: Indianapolis, Indiana
Drifting
Joined: Apr 2007
Posts: 1,970
Likes: 45
From: Cameron Park CA
Crane Cams has or had a line of cams they named Blue Racer. From the table listing the SBC cams, they look to be mostly "old school" i.e., easy ramps, and moderate lift economy cams. For instance, their CD214-11 grind appears to be a close clone of an L79 327/350 cam. LINK
Knowing the OP has a Blue Racer doesn't really tell us anything other than the brand name.
Pete
Knowing the OP has a Blue Racer doesn't really tell us anything other than the brand name.
Pete
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Melting Slicks
Joined: Dec 2009
Posts: 3,225
Likes: 654
From: Thunder Bay
). In my experience, the best bang for the buck is usually headers and a free flowing exhaust system.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Crane Cams has or had a line of cams they named Blue Racer. From the table listing the SBC cams, they look to be mostly "old school" i.e., easy ramps, and moderate lift economy cams. For instance, their CD214-11 grind appears to be a close clone of an L79 327/350 cam. LINK
Knowing the OP has a Blue Racer doesn't really tell us anything other than the brand name.
Pete
Knowing the OP has a Blue Racer doesn't really tell us anything other than the brand name.
Pete
Racer
Joined: Jan 2007
Posts: 427
Likes: 1
Pick a target and aim for it.
The old game of 'just add this and then that' likely leads to a world of disappointment. If you are chasing a dream of horsepower which I fully endorse on a 1976 L-82 with the additions you have mentioned will only bring you to the next basic level. 30 horsepower gain ? maybe...
Anything after that I would highly recommend a motor pull. Seal and secure the L-82 for the 'next' buyer and then put in the new 'dream bullet'.
The old game of 'just add this and then that' likely leads to a world of disappointment. If you are chasing a dream of horsepower which I fully endorse on a 1976 L-82 with the additions you have mentioned will only bring you to the next basic level. 30 horsepower gain ? maybe...
Anything after that I would highly recommend a motor pull. Seal and secure the L-82 for the 'next' buyer and then put in the new 'dream bullet'.
Tech Contributor
Joined: Aug 1999
Posts: 14,373
Likes: 6,370
From: At my Bar drinking and wrenching in Lafayette Colorado
Stock '76 L-82 was 210 hp.
The Edelbrock intake won't gain you anything over the stock L-82 intake on a near-stock engine, so no gain there.
The Holley carb will probably drop you about 10 horsepower from the stock Q-Jet, so that puts you down to 200.
The cam, if it's a mild upgrade from stock, could add 10 hp.
The roller rockers only help to reduce side-loads on the valve stems, and won't add any more power.
This puts you right at the stock 210 hp level, with a probable loss of low- and mid-range torque from the square-bore carb.
Lars