GMPP L92 Small-Bore Heads

Reply Subscribe

Thread Tools

Search this Thread

10-27-2011, 09:08 AM

spy2520

12 Second Club

Thread Starter

iTrader: (3)

Join Date: Feb 2005

Location: Waldorf, MD

Posts: 3,513

Likes: 2

Received 0 Likes on 0 Posts

GMPP L92 Small-Bore Heads

I searched and found alot of chatter about these heads. But price/performance-wise (~$1500 a set) how do these stack up against aftermarket ls1 heads?

Reply Like

10-27-2011, 09:18 PM

A.R. Shale Targa

11 Second Club

iTrader: (2)

Join Date: Feb 2011

Location: Fredonia,WI

Posts: 3,729

Likes: 0

Received 14 Likes on 14 Posts

The L92 head has an intake runner volume of about 260cc which works well
for engine dyno power, however port speed and average torque move heavy
cars better. Most people with 402/408" on down say stay cathedral.

Reply Like

10-28-2011, 05:47 PM

SNLPerformance

FormerVendor

iTrader: (15)

Join Date: Feb 2008

Location: Ft. Worth, TX

Posts: 3,337

Likes: 0

Received 2 Likes on 2 Posts

They come with stock size valves and single springs, so are not a good bang for the buck imho and you'd better off purchasing some PRC stage2.5 243 heads for the same price.

Reply Like

Reply Subscribe