The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Which intake should i use? 383 stroker with vortec heads?

**MikeB** · 05-18-2016, 03:12 PM

Before bolting on your stock exhaust manifolds or headers, use a gasket as a template to make sure the top of the manifold or header port is as tall or taller than the port on the head. If not, do some grinding, because that's the last place you want to hinder exhaust flow, because velocity is much higher up there where the gasses are making a sharp turn.

Also, some header tubes may be very close the spark plugs on Vortec heads, since the plugs sit closer to the exhaust ports.

Pre-vortec OEM gasket on Vortec head. Your exhaust manifolds may also cover up the top of the port.

Fel-Pro gasket for 96-up Vortec engine.

05-18-2016, 03:12 PM	#9
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,430	Re: Which intake should i use? 383 stroker with vortec heads? Before bolting on your stock exhaust manifolds or headers, use a gasket as a template to make sure the top of the manifold or header port is as tall or taller than the port on the head. If not, do some grinding, because that's the last place you want to hinder exhaust flow, because velocity is much higher up there where the gasses are making a sharp turn. Also, some header tubes may be very close the spark plugs on Vortec heads, since the plugs sit closer to the exhaust ports. Pre-vortec OEM gasket on Vortec head. Your exhaust manifolds may also cover up the top of the port. Fel-Pro gasket for 96-up Vortec engine. __________________ Mike 1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!