El Camino 1970 LS5 360hp when Impala is 390hp, corvette the same

eossln
0

Asked by eossln Jan 24, 2007 at 08:43 PM about the 1970 Chevrolet Chevelle

Question type: General

Same heads, intake, cam, carb.
Where does the extra 30hp come from.
Thanks
Ray....

3 Answers

tropikalpirate
5,405

Well, camshats and cam gears can bump a car up 20 hp, but you said that they are the same, however make sure they are tuned. In addition, camshats need a higher static compression piston. The extra 30hp may come from everything working together more smoothly. Even though you have a lot of the same things in both cars, they might not be as well tuned. Also, check the exhaust system.

eossln
0

The 390hp passenger has the same style exhaust manifolds, however the contradiction is the 390hp Corvette may have (unverified) a less restrictive design. The factory rated the 454 LS5 in the Chevelle/ElCamino at 360hp. So with everthing the same why 360hp as opposed to 390hp. Tuning is not the question. Factory rated HP is. I have factory info that it used its own exhaust design when engine was dynoed to determining HP. Ray...

Corollanut
545

Check the stroke, also sometimes I have heard that the manufactures did not release the true hp for some kind of insurance reasons...the El Camino was not supposed to be a Hot Rod like the Corvette. Now I know an old Toyota is not the same thing but they got different hp ratings from basically the same engine. The 1.1, 1.2, and 1.6 3K engines have all the same parts but the 1.2 has a slightly longer stroke giving it 13 more hp and there is a 3K-B that has 23 more hp by using heavier valve springs letting it go to 6600 rpm's instead of 6000.

Your Answer

Add photo

Related Questions

Chevelle
Looking for a Used Chevelle in your area?
CarGurus has 160 nationwide Chevelle listings and the tools to find you a great deal.
ZIP:

Search Chevrolet Chevelle Questions

Chevrolet Chevelle Experts

#1 LouB
LouB
Reputation 200
#2 califcarson
califcarson
Reputation 110
#2 18TandSVT
18TandSVT
Reputation 110
View All

Related Models For Sale

Used Chevrolet Camaro"
667 Great Deals out of 28,070 listings starting at $2,399
Used Chevrolet Corvette"
391 Great Deals out of 9,814 listings starting at $3,500
Used Ford Mustang"
1,072 Great Deals out of 23,465 listings starting at $950
Used Dodge Challenger"
331 Great Deals out of 15,698 listings starting at $13,398
Used Dodge Charger"
830 Great Deals out of 30,098 listings starting at $2,950
Used Chevrolet Impala"
1,756 Great Deals out of 55,005 listings starting at $999
Used Chevrolet Monte Carlo"
76 Great Deals out of 2,347 listings starting at $1,250
Used Chevrolet Malibu"
1,718 Great Deals out of 64,608 listings starting at $1,200
Used Pontiac GTO"
13 Great Deals out of 375 listings starting at $7,700