Whether it's a 632 in a Chevy ... fix header leaks, using the right gasket and installing it properly is critical. Ideally, a header-flange gasket should have openings larger than the exhaust ...

That shouldn't be a turnoff, however, since the LT1 is essentially an updated spin-off of a traditional small-block Chevy and ... of long-tube headers, simple intake and exhaust bolt-ons can ...

These '92-and-up LT1 Corvette headers ... These big-block Chevy street rod headers will fit most early chassis. They come complete with flange gaskets, collector gaskets, and hardware.