327 specs

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Sep 16, 2008 | 10:33 PM

hotrodhaskins

Thread Starter

Junior Member

Joined: Jul 2006

Posts: 27

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From: Minot North Dakota

Car: 1988 pontiac firebird

Engine: 332sbc

Transmission: th350

Axle/Gears: 10bolt 28 spline posi trac 3.73 gea

327 specs

Can anyone tell me the rod length and the crank size (small or large journal) of a 1968 327

Sep 16, 2008 | 11:56 PM

Toyota h8r

Senior Member

Joined: Dec 2006

Posts: 584

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From: toledo

Car: 1987 Z28

Engine: LG4

Transmission: T5

Axle/Gears: 3.23

Re: 327 specs

Quote:

Originally Posted by hotrodhaskins

Can anyone tell me the rod length and the crank size (small or large journal) of a 1968 327

mine is a 69 327
4.00" bore(now bored out .040)
3.25" stroke
5.7" rod

the pistons for a 327 are different than a 350 which has a stroke of 3.48(IIRC)

Sep 17, 2008 | 04:59 PM

Air_Adam

TGO Supporter

Joined: Oct 2002

Posts: 9,067

Likes: 1

From: Saskatoon, SK, Canada

Car: '83 Z28, '07 Charger SRT8

Engine: 454ci, 6.1 Hemi

Transmission: TH350, A5

Axle/Gears: 2.73 posi, 3.06 posi

Re: 327 specs

'68 is a small journal 327 IIRC, '69 was the first year for the large journal 327. The stock stroke is 3.25", bore is 4.00", and rod length is 5.7"

Sep 17, 2008 | 07:56 PM

85TAracer

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Posts: 82

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From: Pendleton, NY

Car: 1985 Trans Am

Engine: LT1

Transmission: T56

Axle/Gears: 9 Bolt posi disc 3:27's

Re: 327 specs

I don't mean to split hairs, but I am pretty sure 68 was a change over year, where some left over small journals were used, but the new large journal cranks were also in production vehicles. I own a 68 Corvette with the original numbers matching 327 and it has a large journal crank. The only true way to know what you have is to measure...if you need to know that info you are probably rebuilding which means it shouldnt be a problem to pull the pan.

Just my 2 cents.