305 head on a 350 sbc - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 07-13-2005, 12:26 PM
sbchevfreak's Avatar
Licenced Automotive Technician
 
Last photo:
Join Date: Feb 2004
Location: Land of big Easter eggs, Alberta
Age: 34
Posts: 1,604
Wiki Edits: 0

Thanks: 8
Thanked 9 Times in 9 Posts
Quote:
3970126 -- 67-79 --327/350 -- 1.71/1.5
BTW, those are 2 bbl heads..... not so good for performance. If you're looking for budget performance, i'd go, as stated earlier, with the vortec heads. Minimal upgrades will produce very satisfactory results. Just have them magnafluxed, and then have the heads machined for higher lif #'s, as the vortecs can only handle about .450-.470 stock(I think those #'s are right).

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 07-13-2005, 01:27 PM
Member
 
Last photo:
Join Date: Jan 2005
Location:
Posts: 3,707
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
I've got a set of heads off of a 1976 262 engine on one of my 350s that have been ported and bowl blended, chamber deshrouded and 1.94 intake valves installed. With a small comp cam Xtreme energy 4X4 cam and performer intake, holley 600. The engine will smolder the tires through 1st and second and I shift it at 6K. No hestitations, excellent throttle response. The chambers measured exactly 64cc's after the deshrouding and larger valves were installed, originally with the smaller valves and stock chamber size they were 50 or 55cc's I think. The port shape is very very similar to the 882 casting. Also these are the heavy castings which are very durable, unlike most of the 305 engine designs. I can get the casting numbers if anyone is interested. Look for 1976 chevy novas and simlar-most of these cars had the 262 engine. Bob
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 07-13-2005, 02:10 PM
1964chevelle's Avatar
its not pink its ember red
 
Last photo:
Join Date: Aug 2004
Location: victoria,tx
Age: 26
Posts: 54
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
the 305 heads on a 350 will not produce the right flame travel to make power in the top end. im running 461 double humps on my 350 try finding those or 462 good heads if not i have some 882 in my garage you can buy
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 07-13-2005, 09:04 PM
Mad Maggot's Avatar
The lean mean donut machine
 
Last photo:
Join Date: Aug 2004
Location: Red Deer, Alberta, Canada
Age: 31
Posts: 386
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The best 305 heads are casting number 14014416

This version has larger 165cc intake runners, a taller short side radius, and 58cc chambers. Stock valve size is 1.84/1.50, but if you do some significant deshrouding, you can fit 1.94/1.60 valves in.

Give these heads some mild port work and a good 3 angle valve grind and you should make great power up to 5200 RPM with a decent cam in a 350. There is a good porting guide for the 305 heads that any beginner can do at http://www.sa-motorsports.com/diyport.shtm If you have the time to do this, it will significantly boost your performance while costing only peanuts.

My very first port job was done with these heads, and I got them to flow 213 cfm without a lot of grinding.
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 07-13-2005, 11:15 PM
GoneNova/406's Avatar
Member
 
Join Date: Aug 2003
Location: columbus,ohio
Age: 58
Posts: 1,163
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
a good choice would be the 87' and up 305/350 14102193,1.94/1.50 valves.the junk yards or loacl papers should be a good source for these heads and you may not have to do anything to them except a valve job and if you do the work that'll be cheap.take the covers off and check the #'s.you won't lose anything on top with these heads.
Reply With Quote Quick reply to this message
  #21 (permalink)  
Old 03-18-2009, 01:56 AM
jasont/a83's Avatar
slave to engines
 
Join Date: May 2006
Location: Oakdale MN
Age: 29
Posts: 17
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
hey sounds like my engine ... i cant rev past 5000 same heads
Reply With Quote Quick reply to this message
  #22 (permalink)  
Old 03-18-2009, 04:31 AM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,658
Wiki Edits: 0

Thanks: 15
Thanked 59 Times in 56 Posts
This thread is 6 years old.
Reply With Quote Quick reply to this message
  #23 (permalink)  
Old 03-18-2009, 08:54 AM
Registered User
 
Join Date: Mar 2009
Location: Tampa Fla.
Posts: 21
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by DoubleVision
This thread is 6 years old.
It really dosnt matter how old the tread is , its still good info and helps with not having a repost witch I bet agrevates you older guy even more
Reply With Quote Quick reply to this message
  #24 (permalink)  
Old 03-18-2009, 09:04 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Quote:
Originally Posted by jasont/a83
...i cant rev past 5000 same heads
Even w/1.72" intake valves, it should rev past 5K rpm- in neutral!
Reply With Quote Quick reply to this message
  #25 (permalink)  
Old 03-23-2009, 09:28 AM
Registered User
 
Join Date: Mar 2009
Location: West Texas
Posts: 1
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
305 heads on 350 block

Im going with 305 58cc Heads on my 350, would appreciate what would be the best combination of cam, intake and carburator.
Reply With Quote Quick reply to this message
  #26 (permalink)  
Old 06-02-2010, 07:01 AM
Registered User
 
Join Date: Jun 2010
Location: sault ste.marie, ontario
Posts: 10
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by Trav
After hearing ppl saying so much sh#t about putting 305 heads on a 350 will boast compression depending on pistons.. and gain some low end.. but at the same time loose some top?? is this so?? im gona go bye the auto wrecker one day after work and pick up a set of heads to build up.. but not sure if i should go with 305 heads or 350 heads again... bye the way my motor is a 80-85 350 sbc.. and if i did go with the 305 heads.. wut would i look for.. a set off a 80-85 camaro? i no they had 305's.. thanx



i had a 79 sbc 350 with stock pistons...2102 edel. cam air gap and 600 cfm 4b carb. i used a set of 416 casting 305 heads...works great...but i lost a lil over 100 rpm for top end thats about it...the low end though it just burns the living hell out of my tires. hope this gives you some idea.
Reply With Quote Quick reply to this message
  #27 (permalink)  
Old 06-03-2010, 09:04 AM
Registered User
 
Join Date: Mar 2009
Location: Tampa Fla.
Posts: 21
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I understand all the drag racers are freaked out about loseing 100 rpm off the top end, but the rest of us whos cams stop making power way before that any way, I dont see the down side.
Reply With Quote Quick reply to this message
  #28 (permalink)  
Old 06-08-2011, 01:50 AM
Registered User
 
Join Date: Jun 2011
Location: utah
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
305 heads on a 350

Would a set a 305 head work on a 350 with flat top piston stock piston the 350 came with I was just wondering and can you run pumped gas the motor has a edelbrock manifold and 600 cfm and would I get more power
Reply With Quote Quick reply to this message
  #29 (permalink)  
Old 06-08-2011, 06:31 AM
cool rockin daddy's Avatar
1.21 giga-watts???!!!!
 
Join Date: Aug 2003
Location: wherever cool cars are
Posts: 1,535
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
save yourself a lot of work and money and get a set of Vortec heads off a 5.7 truck engine and get a matching Vortec Manifold. Putting 305 heads on a 350 is a total waste of time unless you can port heads and can put a ton of work into them. Vortecs will give you the best intake port GM has come up with along with the modern heart or kidney shaped combustion chamber. If you have a boat, the 305 heads make great anchors.
Reply With Quote Quick reply to this message
  #30 (permalink)  
Old 06-08-2011, 11:32 AM
Registered User
 
Join Date: Jun 2011
Location: utah
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Ya but I don't have money for vortec heads I got these for free the truck I would but them it is a 1968 Chevy c10
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last 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 for yourself.
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.




Currently Active Users Viewing This Thread: 3 (0 members and 3 guests)
 
Thread Tools

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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 09:06 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.