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Topic: Hoursepower increase

in Forum: C3 Engines


Hoursepower increase

Posted: 9/22/06 8:35am Message 1 of 9
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Joined: 3/29/2002
Posts: 17
Vette(s): 1976 White, black interior, all numbers match, Cragars, Headers, clean L48 engine.
I am seaking advice.  I want to increase the horsepower on my 1976 L48.
What is the best "bang for the buck"?   Cam, Headers, intake/carb, etc.



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Hoursepower increase

Posted: 9/22/06 11:06am Message 2 of 9
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Frederick, MD - USA
Joined: 9/8/2003
Posts: 3398
Vette(s): 1969 convertible L71 427/435 4-speed black interior
Do you want simple bolt-on modifications or do you want to do more like having internal engine mods made?

New intake, carb rebuild and a true dual exhaust can go a long way without major expense or work. Headers can help if you want to do that.

Cylinder head work, camshaft, etc., can yield much more performance but is much more involved and expensive. Not so much the price of the parts but the shop time and labor can be a killer.




Hoursepower increase

Posted: 9/22/06 12:00pm Message 3 of 9
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fortlauderdale, FL - USA
Joined: 3/15/2004
Posts: 288
Vette(s): 1978 greenwood custom vette, 468 blower motor side pipes.
cut a hole in your hood and bolt on a supercharger,  just kidding  !! 



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Hoursepower increase

Posted: 9/22/06 8:11pm Message 4 of 9
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Greensburg, IN - USA
Joined: 9/24/2003
Posts: 5188
Vette(s): Previous: 1984 Silver / Charcoal Coupe, 1988 Maroon Coupe / 1989 Artic White Coupe / 2001 Speedway White Roadster / Present:1976 Stingray Black / Black, Auto, 350 slightly modified (355 hp) Luxor Wires Redline Tires. / 1989 Roadster Bright Red...
[QUOTE=darrdco] I am seaking advice.  I want to increase the horsepower on my 1976 L48.
What is the best "bang for the buck"?   Cam, Headers, intake/carb, etc.
[/QUOTE]

Do it all, I did & it works... its only money...


Hoursepower increase

Posted: 9/23/06 4:42am Message 5 of 9
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Joined: 8/16/2005
Posts: 242
i was wondering  how much extra (about) hp to expect when putting an edelbrock performance intake monifold , headers , edelbrock performance camshaft (and a holly carb )  on the car ?

art-corvette





Hoursepower increase

Posted: 9/26/06 8:53am Message 6 of 9
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Hot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
that is way too vague to give you any figures.
 
also.  is it really horsepower you are after or is it torque.
 
you can maximize one at the expense of the other and be disappointed.
 
also..  are you looking for a high peak (for bragging rights) or a good curve for true performance.
 
 
 
 



Hoursepower increase

Posted: 10/4/06 5:39am Message 7 of 9
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Joined: 3/29/2002
Posts: 17
Vette(s): 1976 White, black interior, all numbers match, Cragars, Headers, clean L48 engine.
I already have true dual exhaust.
 
My goal is to have a head snaping good curve performance.
 
I am considering edelbrock dual quad intake and carbs.
Also a set of headers.
 
I would consider a cam, but not sure which one to get..
 
Anymore thoughts? 
 



Hoursepower increase

Posted: 10/4/06 12:55pm Message 8 of 9
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Finleyville, PA - USA
Joined: 2/19/2004
Posts: 62
Vette(s): 77 lost along the way/ 73 4spd coupe, just purchased and in process of resto.
4:11 rearend WILL snap your head


Hoursepower increase

Posted: 10/4/06 1:09pm Message 9 of 9
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Westerly, RI - USA
Joined: 5/26/2005
Posts: 133
Vette(s): 77 L48 Original paint True dual stainless exhaust Edelbrock intake manifold and Thunder series carb Distributor has an pern upgrade
Last spring I replaced the stock intake, carb and air cleaner with an Edlebrock Performer intake, 650 cfm Thunder series carb, and an Edlebrock aircleaner that would still fit under my hood.  It did wake it up.  Then I drove 1700 miles to Pigeon Forge and back.  I guess that broke in the new parts and blew out all the carb built up in the engine.  Outran a C5 several weeks ago.  Good luck.


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