heads and pistons question

[stangnsnow2]

hey guys i have a 302 bored .020 and i have these pistons in there:

TRW-L2488F Speed-Pro

Deck height: 8.206 in. Deck clearance: 0.003 in. Skirt clearance: 0.0018 in. Weight: 597g. Approximate compression ratios: 10.51:1 with 54.5cc, 9.99:1 with 58.2cc, 9.72:1 with 60.4cc, 9.41:1 with 63cc

I want to get AFR heads and these are the ones im thinking about getting, but i hear that the pistons need to be notched???? does anyone know if my pistons have to be notched?

AFR# 1388 - 185cc Street/Strip Heads, Stud, 58cc (NON-Emissions) OR
AFR# 1387 - 185cc Street/Strip Heads, Stud, 61cc (NON-Emissions)

2.020 intake valves, 1.600” exhaust valves, combustion chamber volumes of 58cc or 61cc, and 69cc exhaust ports, AFR’s new 185cc Ford head is designed for 302-351 cid engines operating from 1500 rpm to 6500 rpm. A 3/4” thick head deck makes the AFR head ideal for nitrous or blower applications. Will not accept rail rocker arms. Hardened pushrods required with heads #1420 and #1422. High flow 2.020 valves might require aftermarket pistons notched for valve clearance.
Note: Late-Model Ford 302 engines must have stock pistons notched for clearance.

 

[65ShelbyClone]

Speed Pros will need flycutting for a 2.02 valve and just about any cam. I have Speed Pro flat tops, which I'm prett sure is the same piston you listed, and they needed clearancing on both intake and exhaust with my mild cam and 1.90/1.60 valves.

The valve reliefs are extremely small on these pistons.