| Author |
Message |
DaveM
Mad Samba Scientist
Joined: June 11, 2002
Posts: 3010
Location: Dry side of Oregon
|
 Posted: Tue Nov 09, 2004 4:59 pm Post subject: Early/Late 40hp heads |
 |
|
Hi all,
I'm in search of an early set of 40hp heads. I read from my original Speedwell sprint carb instructions that there are two different 40hp heads. Digging through my stuff, I find some 40hp heads that have the intake studs too far apart for the speedwell manifolds and I find one pair that have studs that match the dimensions.
So, I guess I'm trying to understand whether I do have these two different heads... or is one set actually a 36hp set.
TIA
_________________
Sounding like a broken record as to why You should be measuring protein during harvest in order to better your agronomic practices. |
|
| Back to top |
|
 |
tuna
Samba Member
Joined: October 04, 2004
Posts: 475
Location: Fontana, SoCal, USA
|
| Posted: Wed Nov 10, 2004 11:25 am Post subject: |
|
|
You'd know it if you had 36hp heads. They feature half circle stands where the rocker shaft lays, whereas the 40hp and later have a flat stand.
The 1300 and later heads had angled intake ports, so they're easily identifiable.
That leaves you with the two types of 40hp heads. Break out with the measuring calipers and figure out which is which. |
|
| Back to top |
|
|
DaveM
Mad Samba Scientist
Joined: June 11, 2002
Posts: 3010
Location: Dry side of Oregon
|
| Posted: Thu Nov 11, 2004 10:15 am Post subject: |
|
|
I don't think they are 36hp heads... but the only reference I have are some 36hp okrasa pieces which dont answer my question.
Now, the weird part is the number on them is 311 101 373 A which I've seen reference in places that these are 1500 parts but the intakes are definately flat on these heads.
_________________
Sounding like a broken record as to why You should be measuring protein during harvest in order to better your agronomic practices. |
|
| Back to top |
|
|
Slow 1200
Samba Member
Joined: July 02, 2004
Posts: 2105
|
| Posted: Fri Nov 12, 2004 1:51 am Post subject: |
|
|
| That doesn't sound like a 1200 part number at all, maybe it's an early 1500 head? (bus or type 3) |
|
| Back to top |
|
|
EverettB 
Administrator
Joined: April 11, 2000
Posts: 69823
Location: Phoenix Metro
|
|
| Back to top |
|
|
DaveM
Mad Samba Scientist
Joined: June 11, 2002
Posts: 3010
Location: Dry side of Oregon
|
| Posted: Fri Nov 12, 2004 10:01 am Post subject: |
|
|
I know, I know... 311 is a type 3 part... but I'm 99.9% sure the surface of the intake is flat, not angled like the 1500 heads. this is why I'm stumped.
Can someone measure the distance between the two studs that secure the intake manifold to the head? the stud spacing on these heads are just over 2 inches apart.
_________________
Sounding like a broken record as to why You should be measuring protein during harvest in order to better your agronomic practices. |
|
| Back to top |
|
|
kekonaiii
Samba Member
Joined: December 18, 2002
Posts: 406
|
| Posted: Tue Nov 16, 2004 5:56 am Post subject: |
|
|
| DaveM wrote: |
I know, I know... 311 is a type 3 part... but I'm 99.9% sure the surface of the intake is flat, not angled like the 1500 heads. this is why I'm stumped.
Can someone measure the distance between the two studs that secure the intake manifold to the head? the stud spacing on these heads are just over 2 inches apart. |
311 doesn't always mean T3, lots of 311 parts are for 211 and 111 and 113 
How are you doing Dave? How's the family?? |
|
| Back to top |
|
|
|
