Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by:
Sponsored by: CARiD

are these good heads for my motor???

Thread Tools
 
Search this Thread
 
Old Nov 30, 2004 | 09:42 PM
  #1  
86interceptor's Avatar
Thread Starter
Member
 
Joined: Nov 2004
Posts: 144
Likes: 0
From: Oak Ridge, TN
Car: 86 Z-28 Police Interceptor
Engine: 305 but building a 350
Transmission: 700r4 with shift kit
are these good heads for my motor???

I have a 30 400 sbc with flat top pistons and 10:1 compression, I have a rpm air gap intake, a crane 224/234 duration at .050 with 465/488 lift and 114 lsa. I have a 750dp holley, a th350 trans and 2600 stall. will these heads be a good addition to my motor? http://cgi.ebay.com/ebaymotors/ws/eB...sPageName=WDVW
--------------------------------------------------------------------------------
Reply
Old Nov 30, 2004 | 10:18 PM
  #2  
ME Leigh's Avatar
Supreme Member
20 Year Member
 
Joined: Jan 2002
Posts: 3,852
Likes: 1
From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
I'd look for something with a bigger runner and bigger vavles, to take advantage of the 400cid's.

How about these: http://www.webpages.uidaho.edu/~osie4078/proheads.htm

Last edited by ME Leigh; Nov 30, 2004 at 10:20 PM.
Reply
Old Nov 30, 2004 | 10:25 PM
  #3  
86interceptor's Avatar
Thread Starter
Member
 
Joined: Nov 2004
Posts: 144
Likes: 0
From: Oak Ridge, TN
Car: 86 Z-28 Police Interceptor
Engine: 305 but building a 350
Transmission: 700r4 with shift kit
I would love to have those heads but I can't afford them, the heads on ebay are only like 280 dollars.
Reply
Old Nov 30, 2004 | 10:27 PM
  #4  
Chris`s85Z28's Avatar
Member
 
Joined: May 2004
Posts: 105
Likes: 0
From: Welland, Ont. Canada
Car: 1985 Z28
Engine: LG4 305 with a few modds
Transmission: T-5
Well I looked at the pic and read the specs and it dosen1t match up, it says there 72CC chambers well in the pic they look ahell of lot smaller then 72cc they look more like 62cc, they look smaller then my 64 CC bowtie heads, and the specs say 1.94 intakes and those look like 2.02`s to me and it also said they flow 210 cfm`s at .500" well one of the worst small block Chevy heads the 882`s flow like 200 or 205 CFM`s and the L98`s flow 199 so there flow kinda sucks, so if it was me I`d stay away from them. and your cams LSA is to big, carbs like 110 not 114 your LSA is more for a F.I engine, if I was you I`d look into a cam, and stick with the heads you have unless you have the 882`s they`re just junk, everything else looks good in your combo I`d just go with a bigger cam with a tighter LSA but don`t go below 110

Last edited by Chris`s85Z28; Nov 30, 2004 at 10:31 PM.
Reply
Old Nov 30, 2004 | 10:29 PM
  #5  
86interceptor's Avatar
Thread Starter
Member
 
Joined: Nov 2004
Posts: 144
Likes: 0
From: Oak Ridge, TN
Car: 86 Z-28 Police Interceptor
Engine: 305 but building a 350
Transmission: 700r4 with shift kit
my heads are worse then the 882's they are 997's lol and I had thought very seriously about a bigger cam.
Reply
Old Nov 30, 2004 | 10:41 PM
  #6  
ME Leigh's Avatar
Supreme Member
20 Year Member
 
Joined: Jan 2002
Posts: 3,852
Likes: 1
From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
The Dart SS heads are stock replacement heads, pass on them. 165 cc runners, 1.94/1.50" valves 72cc chambers.

Stock, stock, stock, or close.

http://www.dartheads.com/csbhiron.htm
Reply
Old Nov 30, 2004 | 10:44 PM
  #7  
86interceptor's Avatar
Thread Starter
Member
 
Joined: Nov 2004
Posts: 144
Likes: 0
From: Oak Ridge, TN
Car: 86 Z-28 Police Interceptor
Engine: 305 but building a 350
Transmission: 700r4 with shift kit
I am beginning to see that now, I am new to reading flow charts on heads, thats why I ask you guys all these anoying questions all the time
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
TreDeClaw
Theoretical and Street Racing
11
Jun 22, 2021 08:21 PM
italiano67
Tech / General Engine
8
Dec 11, 2016 09:21 AM
NinjaNife
Tech / General Engine
27
Aug 23, 2015 11:49 AM
Feffman
Mid-West Region
0
Aug 13, 2015 07:12 AM
Feffman
Organized Drag Racing and Autocross
0
Aug 13, 2015 07:11 AM




All times are GMT -5. The time now is 02:26 PM.