Photobucket
Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: SBC Head


Member

Status: Offline
Posts: 21
Date:
SBC Head


does anyone have any info on this SBC head? I cant seem to find this detail anywhereheads.jpg



Attachments
__________________


Canadian Poncho Superstar!

Status: Offline
Posts: 7414
Date:

pull the cover off and get the casting number



__________________


Uber Guru

Status: Offline
Posts: 3298
Date:

Cant go by your picture. Need the casting number as Kevin mentioned.

__________________

Remember Fun,

 Remember Laughter ?



A Poncho Legend!

Status: Offline
Posts: 20249
Date:

65Camino wrote:

Cant go by your picture. Need the casting number as Kevin mentioned.


 x2

They are not on this chart:

SBC_Cast_Marks_247autoholic.jpg

 



Attachments
__________________

Prince Edward Island

'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.



Member

Status: Offline
Posts: 21
Date:

Thanks,
I was hoping maybe someone whew of a pattern match.
I will look under the cover.

__________________


A Poncho Legend!

Status: Online
Posts: 44176
Date:

I can't say for certain but it almost seems to me I've seen a 307 head like that. Is the spark plug socket 5/8" or 13/16"? The early heads were 13/16". Those heads have to be at least 1969 or newer because they have bolt holes in the end.

__________________

1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles "FAKE_66"



Addicted!

Status: Offline
Posts: 161
Date:

It's possibly a 1969 307 head or for a 1969 327 210hp (small 2BBL from Camaro) or 235hp (large 2BBL for full size). It is the 1969-70 equivalent of the 1968 3911032 (McKinnon 307 head) and the 3917290 (Tonawanda 307/327 head). These are both 69/70cc small port, 1.72/1.5 valve heads. As the casting mark is rough cast it will probably be a Tonawanda or McKinnon machined head, so possibly a 3927185 which is probably McKinnon cast as I don't think Tonawanda cast this head.

However the angle on the sides of the mark suggest another possibility. That casting mark was used across a number of heads from 1971-1974. Used on:

3973487 which is a 76cc version of the old fuellie head, used in both 1.94/1.5 and 2.02/1.6 valve versions.
3973487X (as above).
3986316 different chamber design and only 2.02/1.6.
3998916 basically as per below but only in 2.02/1.6
3998993 replaces 3973487. 76cc with either 1.94/1.5 or 2.02/1.6.

Most of those are early 70's Z28 or Corvette.

__________________


Member

Status: Offline
Posts: 21
Date:

great info, thanks to all.
I will eventually pull the valve cover, Im just starting to tweek a few things.

__________________


Member

Status: Offline
Posts: 21
Date:

the plugs are 5/8

__________________


A Poncho Legend!

Status: Online
Posts: 44176
Date:

Ok, based on what I've seen then the heads must be at least 1971 or newer.

__________________

1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles "FAKE_66"

Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.

Tweet this page Post to Digg Post to Del.icio.us
.
Support Canadian Poncho!
Select Amount:
<
.
.
.