1970 ls5 454

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1970 ls5 454

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Corvette >> Corvette Models >> Corvette C3 Forum >> 1970 ls5 454

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1970 ls5 454 - 7/16/2008 11:07:15 PM

70 canam BB

Posts: 5
Joined: 7/16/2008
Status: offline

does anyone know the actual hp/tq numbers for this engine. i know all the literature states 390 hp/ 500 tq. is that correct or is it higher/lower. what components came on the engine initially all i know was it was an iron block iron head possible 2 or 4 bolt main with a holley or rochester q-jet. any info will be greatly appreciated. thanks in advance everyone

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RE: 1970 ls5 454 - 7/17/2008 7:53:30 AM

Texas Jim

Posts: 445
Joined: 12/15/2005
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I only know that it was 10.25 to 1 compression ratio and 390 HP and it was the first year for the 454 in the ''Vette. Down to 8.5 and 365 hp for ''71.

(in reply to 70 canam BB)

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RE: 1970 ls5 454 - 7/17/2008 6:06:40 PM

old mac

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Joined: 6/28/2008
Status: offline

I don''t want to give you bad info, so you can go to the link & check it out for yourself - http://www.auto.howstuffworks.com/1970-corvette/.htm

In case the link doesn''t work, I''m finding it with hydraulic cam, small valves & small port cylinder heads. Came w/heavy duty battery.

454/390 for Automatic,
454/460 HP @ 5600 4-speed, Torque 490@3000

(in reply to Texas Jim)

Post #: 3

RE: 1970 ls5 454 - 7/17/2008 6:59:30 PM

73shark

Posts: 1097
Joined: 4/18/2006
Status: online

LS-5 was 390 hp @4,800 and 500 ft-lb @ 3,400. Q-jet, hydraulic cam, 10:1 CR
LS-7 was 460 hp but never was released.

From Corvette Bible.

< Message edited by 73shark -- 7/17/2008 7:13:32 PM >

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