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

K20Chevrolet · 05-14-2016, 01:54 AM

So idk why i didn't think of this before but i just recently rebuilt my sbc 350 into a 383. The motor came out of my 78 k20. I put vortec heads on it just thinking my old edelbrock intake would bolt right up! But i was wrong ha. So my question is what intake will work with my current set up and still be carburated. Any thing will help! Thanks. Would also prefer the intake be edelbrock.

69heavychevy · 05-14-2016, 02:37 AM

part# 2716 or 7516 for air gap intake.

KQQL IT · 05-14-2016, 02:51 AM

Yeah what he said.

K20Chevrolet · 05-15-2016, 01:07 AM

Ok cool. Also do the exhaust ports change? I only ask cuz i need to get a set of headers so do i still get ones for my block or do i get a set for a 1996?

jetmech85 · 05-15-2016, 01:23 AM

Get the headers to fit your '78 with a 350.

K20Chevrolet · 05-15-2016, 12:28 PM

Quote:

Originally Posted by jetmech85

Get the headers to fit your '78 with a 350.

Even tho I have vortec heads on? Just get what I would normally get with the oldschool heads?

rich weyand · 05-15-2016, 12:47 PM

If you get the air-gap manifold, you need to run the thermac air cleaner setup, or have some other arrangement for carb heat, or the carb will never warm up in the winter and you will get miserable gas mileage and performance. See here:
http://forum.73-87chevytrucks.com/sm...?topic=27239.0

Tom · 05-16-2016, 01:11 PM

Quote:

Originally Posted by K20Chevrolet

Even tho I have vortec heads on? Just get what I would normally get with the oldschool heads?

Exhaust is the same from old and newer vortec style heads. Intake manifold and rocker arms are the only required changes.

**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.

05-14-2016, 01:54 AM	#1
K20Chevrolet Registered User Join Date: Apr 2015 Location: Berthoud, Colorado Posts: 16	Which intake should i use? 383 stroker with vortec heads? So idk why i didn't think of this before but i just recently rebuilt my sbc 350 into a 383. The motor came out of my 78 k20. I put vortec heads on it just thinking my old edelbrock intake would bolt right up! But i was wrong ha. So my question is what intake will work with my current set up and still be carburated. Any thing will help! Thanks. Would also prefer the intake be edelbrock.

05-14-2016, 02:37 AM	#2
69heavychevy Registered User Join Date: Jan 2007 Location: Garland,TX Posts: 431	Re: Which intake should i use? 383 stroker with vortec heads? part# 2716 or 7516 for air gap intake. __________________ 80 C10 SWB Step Side - 350 w/ vortec heads, TH350, 12-bolt 3.73

05-14-2016, 02:51 AM	#3
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,239	Re: Which intake should i use? 383 stroker with vortec heads? Yeah what he said. __________________ " That didnt make it any newer " " Dont antique the equipment "

05-15-2016, 01:07 AM	#4
K20Chevrolet Registered User Join Date: Apr 2015 Location: Berthoud, Colorado Posts: 16	Re: Which intake should i use? 383 stroker with vortec heads? Ok cool. Also do the exhaust ports change? I only ask cuz i need to get a set of headers so do i still get ones for my block or do i get a set for a 1996?

05-15-2016, 01:23 AM	#5
jetmech85 Registered User Join Date: Sep 2014 Location: Texas Posts: 215	Re: Which intake should i use? 383 stroker with vortec heads? Get the headers to fit your '78 with a 350.

05-15-2016, 12:47 PM	#7
rich weyand Registered User Join Date: Apr 2014 Location: Bloomington Indiana Posts: 1,041	Re: Which intake should i use? 383 stroker with vortec heads? If you get the air-gap manifold, you need to run the thermac air cleaner setup, or have some other arrangement for carb heat, or the carb will never warm up in the winter and you will get miserable gas mileage and performance. See here: http://forum.73-87chevytrucks.com/sm...?topic=27239.0 __________________ Rich Weyand 1978 K10 RCSB DD.

05-18-2016, 03:12 PM	#9
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,574	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 35 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 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!



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