|
02-03-2019, 04:08 PM | #1 |
Junior Member
Join Date: Feb 2019
Location: Maine
Posts: 2
Likes: 13
Liked 0 Times in 0 Posts
|
Legal Heads for SS/modified
So I acquired a couple new combination possibilities. One is a 315" sbc that was originally in a C/EA car in the early 90's. Has Pontiac aluminum heads and composite Intake from Brandywine. Its all fresh, just old technology and it was cheap enough to try it out. I believe Brodix cast them back in the day for NASCAR or something. Are these a legal head for say SS/BS or CS? Also, I have a top end complete SB2.2 for this shortblock after I change the necessary components. I was also wondering where that would fit in. If It would be legal in BS or would I have to go into say BM? I have sent a email to tech, but I have not received an answer. Just curious if anyone could help me out.
Thank you Cory |
02-03-2019, 05:04 PM | #2 |
VIP Member
Join Date: Feb 2014
Location: Lakewood Washington
Posts: 1,407
Likes: 29
Liked 236 Times in 127 Posts
|
Re: Legal Heads for SS/modified
SS/CS is cast iron in line valve heads only. Aftermarket heads need to be on the NHRA Accepted Product List. GM and Pontiac are listed separately so I don't know if you can run Pontiac heads on a Chevy. The national record holder in CS is a 302 Ford running NASCAR iron short track heads. They aren't listed but have a factory part number.
Aftermarket aluminum heads, inline or canted, are allowed in SS/BS. Watch out for the Hancock and Lane car from D6 if you build this. EDIT: I had difficulty getting responses from tech out here on the West coast for Super Stock Modified classes too. I didn't go ahead with my build until I found the Canadian car I referenced above on Facebook, CR and in the NHRA record book. It's a weight to HP group with few engine and valve restrictions.
__________________
Dale Shearon 68 Mustang 6394 Last edited by FireSale; 02-03-2019 at 05:10 PM. |
02-03-2019, 05:36 PM | #3 |
Junior Member
Join Date: Jun 2008
Posts: 48
Likes: 0
Liked 1 Time in 1 Post
|
Re: Legal Heads for SS/modified
The Pontiac heads were made for the small block Chevy and are legal in Modified. I use the Buick head on a small block Chevy which is legal in SS Modified
|
Liked |
02-03-2019, 05:49 PM | #4 |
Junior Member
Join Date: Jun 2008
Posts: 48
Likes: 0
Liked 1 Time in 1 Post
|
Re: Legal Heads for SS/modified
The Aluminum heads would be legal in SS/BS.
|
02-03-2019, 06:43 PM | #5 |
VIP Member
Join Date: Feb 2003
Location: Glendale, Arizona
Posts: 2,991
Likes: 693
Liked 1,457 Times in 543 Posts
|
Re: Legal Heads for SS/modified
Can run SS/BS with either cylinder head, or run SS/AS with the SB2.2.
Can also run SS/AM thru SS/FM with both heads. Canted valve allowed also in SS/AM and SS/BM. SB2.2 is a splayed valved head, not canted. |
02-04-2019, 03:52 AM | #6 |
VIP Member
Join Date: Dec 2001
Location: Texarkana Ark/TX
Posts: 2,349
Likes: 435
Liked 677 Times in 261 Posts
|
Re: Legal Heads for SS/modified
I think the 2016 Div 4 SS champ ran a small cu in SB.2 engine in SS/BS.
Two sets of headers came with the car. Looks like a 15-18 deg set and an SB.2 set.
__________________
Adger Smith (Former SS) |
02-04-2019, 08:58 AM | #7 |
Junior Member
Join Date: Feb 2011
Location: Cuyahoga Falls Oh
Posts: 17
Likes: 0
Liked 2 Times in 2 Posts
|
Re: Legal Heads for SS/modified
SB2 is a canted, not splayed.
|
02-04-2019, 09:44 AM | #8 |
Junior Member
Join Date: Feb 2019
Location: Maine
Posts: 2
Likes: 13
Liked 0 Times in 0 Posts
|
Re: Legal Heads for SS/modified
Thank you for all your replies. I really appreciate the info. Now to get it together and make some noise
|
02-04-2019, 02:30 PM | #9 |
VIP Member
Join Date: Feb 2003
Location: Glendale, Arizona
Posts: 2,991
Likes: 693
Liked 1,457 Times in 543 Posts
|
Re: Legal Heads for SS/modified
He is asking about the SB2.2, not the SB2.
SB2 valve angles are 12° x 4° Intake and 8° x 0° Exhaust and considered Canted. The SB2.2 valve angles are 11° x 4° Intake and 8° x 0° Exhaust and considered Splayed with all the intake ports pointing towards the center of the cylinder head. The 8° Exhaust valve angles towards the intake manifold just like a normal wedge cylinder head. |
02-04-2019, 05:50 PM | #10 |
Junior Member
Join Date: Feb 2011
Location: Cuyahoga Falls Oh
Posts: 17
Likes: 0
Liked 2 Times in 2 Posts
|
Re: Legal Heads for SS/modified
Thanks, did not know that!
|
|
|