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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: gold84gmc on August 18, 2009, 07:53:18 am

Title: stock lift and duration?
Post by: gold84gmc on August 18, 2009, 07:53:18 am

whats the stock lift and duration for an 84 350

Title: Re: stock lift and duration?
Post by: eventhorizon66 on August 18, 2009, 01:19:30 pm

Teensy and tiny.

Title: Re: stock lift and duration?
Post by: gold84gmc on August 18, 2009, 02:32:07 pm

huh? lol

Title: Re: stock lift and duration?
Post by: Captkaos on August 19, 2009, 11:42:01 am

I don't know specifically, but it will be around .414" lift and probably 220 duration.  It is a 3/4T truck so it was cammed to make low end power.

Title: Re: stock lift and duration?
Post by: gold84gmc on August 19, 2009, 12:31:52 pm

is anything else different in the engine because i thought the only differences between a 1/2t and a 3/4t was the suspension,driveline,and gears

Title: Re: stock lift and duration?
Post by: Captkaos on August 19, 2009, 12:51:14 pm

81-86 only the 3/4T up and 1/2 4x4's got 350's along with 1/2 Burbs of any drivetrain config.  1/2T pickup 2WD only got 305's.

Title: Re: stock lift and duration?
Post by: VileZambonie on August 19, 2009, 04:51:33 pm

Two cam options:

.2484 in
.2667 ex

or the mighty

.2600 in
.2733 ex

Duration was around 200/210

Title: Re: stock lift and duration?
Post by: SUX2BU99 on August 20, 2009, 10:25:36 am

^ Ick. I take it that's lobe lift and not valve lift? If that's valve lift.....wow.....double ick.

Title: Re: stock lift and duration?
Post by: eventhorizon66 on August 20, 2009, 01:36:20 pm

That's definitely lobe lift. :D