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L78 396
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69_velle_
I love my Chevy Chevette!
| Posts: 4
| Joined: 08/09
Posted: 08/15/09
10:09 AM
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alrite i got a question im building a L78 396 for my 69 ss chevelle and i got the short block assembled i was wondering if anyone could give me a ruff guess at what my horsepower will be with the L78 pistons the new comp cams factory muscle L78 camshaft a set of aluminum L88 heads edelbrock performer rpm airgap intake and a holley 750 or 800 cfm double pumper full msd ignition hooker super comp headers and a 3 inch exhaust hooked up to super 44 flows.
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wally0143
V-6 Camaros rule!
| Posts: 27
| Joined: 07/09
Posted: 08/15/09
04:58 PM
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The L 78 engine is widely rumored to actually produce 425 hp. the 396 that was offered in vettes and advertised at 425 hp is said to be the same one that was rated 375 hp in other cars. GM just wanted to save top dog status for the vette for sales reasons. I have heard this from many old timers. true- I dont know. the carb you mention is L78 equipment,and unless the ports are larger the heads you have are the same other than being alum. if i was betting, i would say your exhaust is probably worth 30-40 hp. with headers L 78 novas were known to run in the high 11 second range. of course thats with 4.11 gears or better.with that in mind, i would say 475+ hp is a fair estimate. hope this helps! remember, theres no such thing as global warming!
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69_velle_
I love my Chevy Chevette!
| Posts: 4
| Joined: 08/09
Posted: 08/17/09
02:50 PM
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exactly what i wanted ta hear thanks alot
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