Head selection questions... Newbie - 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
  #1 (permalink)  
Old 10-03-2005, 12:08 PM
Geoff Higgins
 
Join Date: May 2005
Location: Paso Robles, CA
Age: 36
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Head selection questions... Newbie

So bear with me.
I just recieved a donated set of 350 heads for an SBC. I've yet to decide wether or not I want to use them, but I'm hoping you guys can point the way. These are a set of of early 70's, 3998993 heads, each chamber is 76cc and the valve sizes listed, yet unconfirmed, should be between 1.72/1.50 and 1.94/1.50, on e of the two. I've quickly researched and found these are kind of "rated" as a low performance head. So I guess my ultimate question is, would a great cam pull power out of these and make them acceptable heads?
I'm putting this in my 53 chevy and it's just a cruiser, I won't be dragging in it or anything. Will I be dissapointed using these?

Thanks in advance,

Geoff

    Advertisement

Last edited by 1953Chevy210; 10-03-2005 at 02:51 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-03-2005, 02:31 PM
Member
 
Last photo:
Join Date: Jan 2005
Location:
Posts: 3,707
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
If you're rebuilding the engine run flattop pistons and a cam with no more than 220 degrees of duration at .050" lift and it'll be just fine. All parts selection should be made with a idle to 5000rpm operating range in mind if this thing's going to be a cruizer. Bob
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-03-2005, 02:39 PM
Hippie's Avatar
Analog man in a digital world.
 

Last journal entry: HEI comparison.
Last photo:
Join Date: May 2003
Posts: 2,255
Wiki Edits: 0

Thanks: 3
Thanked 5 Times in 5 Posts
Quote:
Originally Posted by 1953Chevy210
I'm putting this in my 53 chevy and it's just a cruiser, I won't be dragging in it or anything. Will I be dissapointed using these?

Thanks in advance,

Geoff
Good heads will make up for the wrong cam to some degree but a good cam can never make up for the wrong heads. There are better heads but for your intended usage you'll never know the difference, it will run just fine. Besides, free is hard to beat.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-03-2005, 03:09 PM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,539
Wiki Edits: 0

Thanks: 3
Thanked 331 Times in 328 Posts
When some one wants to give you something like a set of cylinder heads for free you can preetty well assume they are not very desirable.

Those are low perf low ompression heads. if you just want to build a motor that runs, fine. But there are umteen other better head castings that will make more power or will make more power with some porting than those heads.

Some, like 305HO (416) heads from mid 80's camaro's etc with carbed 305 can be had for a song. Something like this is a good starting point for a budget "cruiser" 350 build up. They respond very well to home porting and large 350 sized valves. The small combustion chamber is ideal for getting the compression up on a 350. I look for these for a budget mild/moderate street 350 buildup.
Combine these heads with a high lift short duration can, dual plane intake and headers and you'll have a very snappy 350. Just right for "cruising"
You could trade the 993's for some 416's and start from there.
These heads are plentyfull in the wreckers and many people have them laying around in their garages.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-03-2005, 03:30 PM
coldknock's Avatar
Member
 
Last photo:
Join Date: Feb 2004
Location: Social Circle, Ga.
Age: 42
Posts: 1,528
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Yeah, but they ain't free.

Larry
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 10-05-2005, 11:58 AM
Geoff Higgins
 
Join Date: May 2005
Location: Paso Robles, CA
Age: 36
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Yet another question

F-Bird 88, out of curiousity I checked around and was wondering if it was worth getting new 2.02/1.60 stainless valves and a good decking and cleaning put into these heads. Again, I am kinda on the cheap with this motor, and yes, they were undesirable from the guy that gave them to me, only because when he put his block together he had already had some hi-perf heads made for him, so he used them. So, yeah, you can't beat free at this point.

Geoff
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 10-05-2005, 05:18 PM
lluciano77's Avatar
Short changed on common sense
 
Last photo:
Join Date: Jun 2003
Location: california
Age: 37
Posts: 3,548
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You are better off going aftermarket than trying to make something out of those stock heads.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 10-05-2005, 05:34 PM
steve t's Avatar
ex biker, now hotrodder
 
Join Date: Mar 2005
Location: NC
Age: 64
Posts: 863
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
if you can run them as is, no work , run them on street
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 10-06-2005, 08:52 AM
Hippie's Avatar
Analog man in a digital world.
 

Last journal entry: HEI comparison.
Last photo:
Join Date: May 2003
Posts: 2,255
Wiki Edits: 0

Thanks: 3
Thanked 5 Times in 5 Posts
Quote:
Originally Posted by 1953Chevy210
I'm putting this in my 53 chevy and it's just a cruiser, I won't be dragging in it or anything.
I think we need a little reality check here guys. If this is really what he wants the 993's are fine. Just do a valve job on them and run 'em. Nothing wrong with anybody's advice if he actually wants more than what he stated in his first post, but if it's really "just a cruiser" why spend the money for better heads when in actuality he probably won't notice any difference? This is a motor that wil probably rarely see the high side of 4 grand. Freshen up the 993's, put a short duration torque cam in it, a good 4 Bbl. intake and dual exhaust and cruise.......... BUT........if you really want more than "just a cruiser", then yeah, what they said.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 04-16-2006, 01:36 PM
Geoff Higgins
 
Join Date: May 2005
Location: Paso Robles, CA
Age: 36
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I know it's been awhile but....

Well, I got ahold of some 416's. They are pretty dirty, but they'll clean up nice. The block is with the machinist and the question has come up about the compression I hope to achieve. I want to run on pump gas, as I'm not a millionaire, but I have no idea what I'm shooting for with these heads. I'm obviously not in a huge hurry with this shop (It has been almost a year now, budget and time on both ends) but I'd like to have an answer sometime soon, as I'm going to have him ordering pistons and all that good stuff. Can you tell yet that I have very little idea what I'm doing here?

Any help would be appreciated,

210

Last edited by 1953Chevy210; 04-17-2006 at 03:13 PM.
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: 1 (0 members and 1 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Too many Newbie Questions Shakey Body - Exterior 3 05-08-2005 06:52 PM
bowtie head ?? and hp? 64 nova Engine 7 09-12-2003 07:50 PM
bowtie head ?? and hp? 64 nova Engine 0 09-09-2003 10:48 PM
Head Selection 'iron duke' dukin-it-out Engine 2 09-05-2003 11:28 PM
More head gasket questions willys36@aol.com Engine 3 08-13-2002 03:06 PM


All times are GMT -6. The time now is 01:41 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.