Author Topic: Sbo Thornton shorties  (Read 2240 times)

olds403

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Re: Sbo Thornton shorties
« Reply #40 on: March 03, 2019, 09:17:08 AM »
We have a set, but my brother has not put his motor in his car yet.  We have only used the thorton w/z small block manifolds.  Hands down those really clean up the under belly.  As for performance, doubt any difference although installing full lenght headers in the trans am with olds motor sucks....

Re: Sbo Thornton shorties
« Reply #40 on: March 03, 2019, 09:17:08 AM »
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