Dyno test predictions
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Racer
Joined: Sep 2012
Posts: 420
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Dyno test predictions
I'm getting my 74 l82 dyno this week for the fun of it first run will be with the quadrajet that is on the car not sure if its properly tuned or not
2nd run will be with the original stock carb tuned by Lars car has long tube headers and ehaust system
Any predictions on what numbers ill get ???
2nd run will be with the original stock carb tuned by Lars car has long tube headers and ehaust system
Any predictions on what numbers ill get ???
Le Mans Master
Joined: Oct 2007
Posts: 7,451
Likes: 974
From: RI, Now Franklin/Nashville TN
[IMG]
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[/IMG]The only changes to my 66,000 mile stock L-82 4 speed are:
Holley 4175 650 CFM Qjet replacement-no changes to jetting-softest vacuum secondary spring
Comp cams roller tipped 1.5 rockers-no difference from stock
2.5 dual exhaust and McJack's Shorty headers-Monza turbo mufflers
No pollution control
stock dual intake air cleaner assembly with K&N filter
175 degree operating temperature versus stock 220 temp
I figure about 45-50 RWHP increase over totally stock 1978 L-82!
Last edited by jb78L-82; Mar 19, 2013 at 08:11 AM.
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Le Mans Master
Joined: Oct 2007
Posts: 7,451
Likes: 974
From: RI, Now Franklin/Nashville TN
Can't get the video to work with the new photobucket-will try later.
The dyno numbers are VERY consistent with multiple sources and examples of the L-82 on a dyno-different dynos-with exhaust changes only primarily.
A bone stock L-82 will do about 175-180 RWHP on the dyno-I don't care which dyno either. If the numbers are not in that range, something else is wrong either with the dyno or the car.
The dyno numbers are VERY consistent with multiple sources and examples of the L-82 on a dyno-different dynos-with exhaust changes only primarily.
A bone stock L-82 will do about 175-180 RWHP on the dyno-I don't care which dyno either. If the numbers are not in that range, something else is wrong either with the dyno or the car.
Last edited by jb78L-82; Mar 19, 2013 at 09:05 PM.
Racer
Joined: May 2012
Posts: 354
Likes: 0
Right there is why I'm not even going to try
Good JOB! I'd set back and eat some popcorn while watching it hit 232hp @ the rwhs.
Racer
Joined: May 2012
Posts: 354
Likes: 0
and my last .02 cents on dyno results......
and post my dyno results-only mine were at the crank, its damed if you do and damed if you don't. I believe it, that equals out to a lil over 300hp at the crank,on a basically stock engine very achievable with ANY 350. heck well maintained 60,000 miles? thats very little. Good JOB! I'd set back and eat some popcorn while watching it hit 232hp @ the rwhs.
Good JOB! I'd set back and eat some popcorn while watching it hit 232hp @ the rwhs. parameters thats rich.
