441 SBC head question - Chevelle Tech
Chevelle Tech join team chevelle as a supporting member  
Chevelle Parts at SS396.com      
GROUND UP & SS396.com         
Official Sponsor of Team Chevelle
     

Auto Insurance

Chevelles.com is the premier Chevrolet Chevelle Forum on the internet. Registered Users do not see the above ads.
Engine AdvertisementGeneral Engine Discussion.

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old Oct 26th, 03, 9:25 PM
ZZ69chevelle ZZ69chevelle is offline
Lifetime Premium Member
Steve
 
Join Date: Jan 2001
Location: Blandon PA
Posts: 2,911
Post

I have a pair of 441's on an engine I got a few weeks ago, but they have the small seat tapered plugs. I didn't think the 441's ever had small seats, but rather the large seat plug with the gasket. Has anyone else seen these? The few books I have also say large seat. The heads are 1970 castings. Any input would be appreciated.
__________________
Steve B. 69 Malibu, 88 Camaro, 89 K1500 Z71 Stepside, 93 Z28, 97 Z28, 05 2500HD 4x4.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old Oct 28th, 03, 11:51 AM
ZZ69chevelle ZZ69chevelle is offline
Lifetime Premium Member
Steve
 
Join Date: Jan 2001
Location: Blandon PA
Posts: 2,911
Post

ttt
__________________
Steve B. 69 Malibu, 88 Camaro, 89 K1500 Z71 Stepside, 93 Z28, 97 Z28, 05 2500HD 4x4.
Reply With Quote Quick reply to this message
  #3  
Old Oct 28th, 03, 12:09 PM
19Nova72 19Nova72 is offline
Tech Team
 
Join Date: Dec 2002
Location: Philomath, OR
Posts: 545
Send a message via AIM to 19Nova72
Post

“441” GM Cylinder Head Flow Data

Valve Size 1.94”/1.5”
Chamber Size 76cc
Intake Runner 155cc’s
Flow In./Ex. @

.100” 55/45
.200” 110/83
.300” 160/118
.400” 194/133
.500” 201/146
.600” 203/148

1/4 of 1.94” = .485”
1/4 of 1.5” = .375”

"441" – 3932441. This head was found on the 1969-1970 350 engines (255hp 350), it was a decent flowing large chamber head. It had 1.94/1.50" valves, 76CC combustion chambers, DO have accessory holes, intake port volume should be 161CC's, exhaust port volume should be 61CC's. Not to be confused with 3923441, which was a 1.72/1.50" valve, 327 truck head.
Port Volume In./Ex. 155/62
.400” 194/133 68.56% 399.1hp
Average In./Ex. 1.252NA
Lift
.050” 30/22
.100” 55/45
.200” 110/80
.300” 160/112
.400” 194/127
.500” 201/136
.600” 203/139
__________________
19Nova72
M.E. student
Creativity is a drug I cannot live without. Cecil B. DeMille (1881-1959)
Reply With Quote Quick reply to this message
  #4  
Old Oct 28th, 03, 12:09 PM
airrj airrj is offline
Moderator
R.J.
 
Join Date: Mar 2001
Location: Headed to Antarctica
Posts: 1,032
Send a message via AIM to airrj
Post

Steve,

It has been a few years, but if I remeber correctly the 441's I had on my stock car motor had peanut plugs also. I can't tell you the year of the castings, but the were for sure 441's.
__________________
R.J.
1972 Chevelle
The Ice Blog: http://airrj.blogspot.com/
Reply With Quote Quick reply to this message
  #5  
Old Oct 28th, 03, 1:44 PM
ZZ69chevelle ZZ69chevelle is offline
Lifetime Premium Member
Steve
 
Join Date: Jan 2001
Location: Blandon PA
Posts: 2,911
Post

Thanks. I have a few pair, and hey all have the large seat plugs, and I thought it was odd these didn't.
Reply With Quote Quick reply to this message
  #6  
Old Oct 28th, 03, 3:40 PM
Tom Mobley Tom Mobley is online now
mod since about forever, old now :)
TerribleTom II
 
Join Date: Oct 1998
Location: Glendale, Az
Posts: 20,976
Post

I have a pair out in the shed, peanut plug.

The year a head is cast is not necessarily the same model year it's machined for. Sometimes they sat around awhile.

Tom
__________________
Tom
Reply With Quote Quick reply to this message
  #7  
Old Oct 28th, 03, 6:50 PM
dyno jonn dyno jonn is offline
Senior Tech Team
Jon N.
 
Join Date: Jan 2003
Location: back in the "Hew-Hess-Hay"
Posts: 2,453
Post

NHRA stock/super stock racers will pay well for those castings if they havent been chopped up. Could be worth pretty good bucks!
__________________
Jon N.

The only reason someone would want insurance is if they want to pay someone elses bills or want someone else to pay their bills.

Liberalism is the belief that "Evil Deserves a Fair Chance".
Reply With Quote Quick reply to this message
  #8  
Old Oct 29th, 03, 9:24 PM
DZAUTO DZAUTO is offline
Team Member
Tom
 
Join Date: Sep 1998
Location: Mustang, OK USA
Posts: 10,580
Post

If the casting date is after Aug 70 (letter H for Aug in the date code), then they went into a 71 model car which got the taper seat plug.
__________________
Tom Parsons
TC# 474
#3 FOREVER!!!!!
Light travels faster than sound. That is why some people appear to be bright until you hear them speak. (unknown)
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply
Chevelle Tech > Mechanical > Engine      Current Topic: 441 SBC head question
Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:55 AM.


Is there a site like this for?    El Caminos Camaros Novas Impalas GTO Chevy Punch All Chevys

© 2009 Team Chevelle - AutoForums