Legal Heads for SS/modified

SSDiv6 · 02-03-2019, 06:43 PM

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.

Adger Smith · 02-04-2019, 03:52 AM

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.

R Lowry · 02-04-2019, 08:58 AM

SB2 is a canted, not splayed.

odds&ends1762 · 02-04-2019, 09:44 AM

Thank you for all your replies. I really appreciate the info. Now to get it together and make some noise

SSDiv6 · 02-04-2019, 02:30 PM

Quote:

Originally Posted by R Lowry

SB2 is a canted, not splayed.

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.

R Lowry · 02-04-2019, 05:50 PM

Thanks, did not know that!

Adger Smith · 02-13-2019, 04:24 PM

The way I read the new Head rules is that any aftermarket head is legal in SS Modified. Doesn't need to be factory part number any more.
some CFE splayed valve in SS/AS or AJ 18 degree in SS/BS??

Rich67stang · 02-13-2019, 04:56 PM

Quote:

Originally Posted by Adger Smith

The way I read the new Head rules is that any aftermarket head is legal in SS Modified. Doesn't need to be factory part number any more.
some CFE splayed valve in SS/AS or AJ 18 degree in SS/BS??

Could you forward where you read this? Interested, Thanks.

SSDiv6 · 02-13-2019, 05:42 PM

Quote:

Originally Posted by Adger Smith

The way I read the new Head rules is that any aftermarket head is legal in SS Modified. Doesn't need to be factory part number any more.
some CFE splayed valve in SS/AS or AJ 18 degree in SS/BS??

Nope.

The aftermarket cylinder head needs to be approved by NHRA and added to the list of NHRA accepted products. No billet heads allowed although there are rumors of some billet heads in use that have been made to look like a casting.

It took me close to a year to get an Edelbrock cylinder head approved.

02-03-2019, 06:43 PM	#1
SSDiv6 VIP Member Join Date: Feb 2003 Location: Mesa, Arizona Posts: 3,047 Likes: 712 Liked 1,606 Times in 584 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	#2
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 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	#3
R Lowry 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	#4
odds&ends1762 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, 05:50 PM	#6
R Lowry 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!

02-13-2019, 04:24 PM	#7
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Legal Heads for SS/modified The way I read the new Head rules is that any aftermarket head is legal in SS Modified. Doesn't need to be factory part number any more. some CFE splayed valve in SS/AS or AJ 18 degree in SS/BS?? __________________ Adger Smith (Former SS)