Hi Perf Pass.
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 2,340
Likes: 2
From: Moro IL
Hi Perf Pass.
"Hi Perf Pass" I found this stamped on the side of my block on the drivers side. Is this of any signifigance, It's a matching numbers block. I figured all LS-4's were two bolt mains, would this indicate anything different? Thanks for any info on this, just something I was curious about.
:cheers:
Pat Kunz
:cheers:
Pat Kunz
Race Director
Joined: Apr 1999
Posts: 15,146
Likes: 477
From: NM
Re: Hi Perf Pass. (73 LS-4)
This is from the Mortec site, http://www.mortec.com
"HIPERF" or "HIPER" was used on ALL '65-'91 Mark IV big block blocks and is not an indication that it has four bolt main caps and was used in a high performance application. Two-bolt, low performance big blocks received the same "HIPERF" designation.
tom...
"HIPERF" or "HIPER" was used on ALL '65-'91 Mark IV big block blocks and is not an indication that it has four bolt main caps and was used in a high performance application. Two-bolt, low performance big blocks received the same "HIPERF" designation.
tom...
Race Director
Joined: Mar 1999
Posts: 10,258
Likes: 1
From: Calif.
Re: Hi Perf Pass. (Fevre)
You mean it doesn't make your car faster like stickers on a ricer? :jester
Really.
Chicks dig it.
[Modified by The Dude, 12:06 PM 8/9/2002]
Safety Car
Joined: Feb 1999
Posts: 3,631
Likes: 14
From: Fountain Hills AZ
Re: Hi Perf Pass. (Tom73)
I never thought I'd have to disagree with Motec but ... I believe that the base 325 hp 396's were NOT marked "Hi Perf Pass"(high performance passenger) but I'm not sure what the truck blocks were marked. All 427 blocks were Hi Perf Pass. While the 2 and 4 bolt hi perf pass blocks had the same webbing at the crank mains and could accomodate either 2 or 4 bolts, the base non hi perf pass block was a 2 bolt only.
