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Vortec Heads L31 and L30

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Old

Jan 19, 2001 | 08:17 PM

#1

Thread Starter

Supreme Member

Joined: Jan 2001

Posts: 1,116

Likes: 0

From: Rio Rico, AZ 85648

Car: 1989 IROC-1

Engine: L98

Transmission: 700r4

Vortec Heads L31 and L30

Somebody is selling a set of L30 Vortec Heads, and they said heads came off of a 305. The intake and exhaust is identical to a 305, with a 1.84 intake and 1.5 exhaust. I know that the L31 vortec heads from the 350 have a 1.94 intake.

Anybody heard of vortec heads designed for a 305, I guess it's the L30 model?????

What, besides the intake size is the difference between the two.
Thanks again.

Old

Jan 20, 2001 | 04:47 PM

#2

Senior Member

Joined: Sep 2000

Posts: 840

Likes: 0

From: Crystal Lake Il

Car: '98 Z

Engine: LS1/6

Transmission: 4l60E

the L31's flow a ton better because they have a different size intake and exhaust tracks, DONT waste your dough on the L30s.

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