Legal Heads for SS/modified

[FireSale]

Be careful down there in the Modified and Modified Stock classes of SS. Read and stick to current rules.

SuperStock Modified
"V-8 splayed valve permitted in AM and BM, canted or inline in
CM through FM, and any valve configuration in GM with V-6
engine. All heads must be NHRA-accepted, two valves per
cylinder. Aftermarket aluminum cylinder heads permitted (no
billet)."
Where it matters: SS/CM Aluminum canted heads allowed with NHRA stamp.

SuperStock Modified Stock
"V-8 splayed valve permitted in AS, canted or inline in BS, inline
only in CS, and any valve configuration in DS. All heads must be
NHRA-accepted, two valves per cylinder, except in classes DS,
ES, FS, and GS, four valves per cylinder permitted. Aftermarket
aluminum cylinder heads permitted (no billet) except in CS."
Where it matters: SS/CS Inline iron heads only.

Watch your Modifieds.....