<p>Virtually all colleges are going to look at both scores. Although an ACT of 33 would certainly help you (that’s the 99th percentile for the ACT), the discrepancy between an ACT of 33 and an SAT of 1640 would likely merit some scrutiny from the admissions committees at more selective schools.</p>
<p>if it was your only time taking the SAT, they will just assume you were sick, or had some problem during the test. no big deal. don’t “confirm” your bad score by taking it again.</p>
<p>if you can get a 33 on the ACT, then do it.</p>