Help identifying CNC ported LT1 heads - CamaroZ28.Com Message Board

LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Help identifying CNC ported LT1 heads

Old 03-04-2019, 05:00 AM
  #1  
Registered User
Thread Starter
 
Join Date: Apr 2007
Posts: 386
Help identifying CNC ported LT1 heads

Hey guys I just purchased a set of used 643 heads that have been CNC ported for $150.00, I can tell from the machining marks that they were CNC ported but there are no identifying markings on the heads. And I know that there weren't very many shops that were CNC'ing LT1 heads, so if any you guys have Ai 190/200, CNC Heads or any other head that's CNC ported can you tell me if there are any identifying marks to tell who did the heads, thanks in advance for any help?
87Aerocoupe is offline  
Old 03-04-2019, 09:42 AM
  #2  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 66,983
Re: Help identifying CNC ported LT1 heads

CNC Cylinder Heads in Pinellas Park, FL 5-axis CNC ported a set of LT4 heads for me in late 1999). I do not recall any identifying marks. I have a couple pictures on my PC, but they are mostly the combustion chambers. I’ll look at those when I get back to my PC. Could also check my car, but there’s snow blocking the garage door. I did see a post on another forum that they found “CNC” stamped on the front of the passenger side head (which would probably mean they would find it on the back of the driver side head).

Lingenfelter was also CNC porting LT1/LT4 heads at that time. The owner of CNC Cylinder Heads, Pete Incaudo, claimed he sold the CNC machine(s) to Lingenfelter, and set them up. I've heard he also supplied Callaway with heads.
Injuneer is offline  
Old 03-06-2019, 04:47 PM
  #3  
Registered User
 
TD95Z's Avatar
 
Join Date: Apr 2008
Location: OH
Posts: 314
Re: Help identifying CNC ported LT1 heads

Injuneer,

That might be my post you're referring to. I picked up a car that was extensively modified, and it was alleged to have AFRs. However, there's no marking I can find that matches any current or former AFR casting. All I can see is what looks to be "CNC 1054" or "CNC 1064" stamped on the face of the driver's side head. They don't have chamfered edges like AI does with theirs, so these came from somewhere else. They're definitely stock castings. I'd be interested to hear what markings, if any, are on your Incaudo heads. There can't be that many places with a CNC program for old LT1 stuff.
TD95Z is offline  
Old 03-09-2019, 11:27 AM
  #4  
Registered User
Thread Starter
 
Join Date: Apr 2007
Posts: 386
Re: Help identifying CNC ported LT1 heads

Thanks guys I'm going to clean them up and install them on my fresh 383 LT1.
87Aerocoupe is offline  
Old 03-14-2019, 11:30 AM
  #5  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 66,983
Re: Help identifying CNC ported LT1 heads

I looked at my LT4 heads. The driver side did not have anything on the machined front surface (which does not have an ICM bolted to it - easy to see), but on the front, on an as-cast portion of the driver side head, there was a large "P" (Pete ?) neatly stamped into it. Couldn't see anything on the passenger side, since it's blocked by the accessory bracket and everything else on that side of the engine.
Injuneer is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
95NX-TA
Parts For Sale
4
09-28-2004 12:54 PM
95NX-TA
Parts For Sale
6
06-05-2004 07:32 PM
95NX-TA
Parts For Sale
12
05-21-2004 02:54 PM


Thread Tools
Search this Thread
Quick Reply: Help identifying CNC ported LT1 heads


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.