Vortec Heads Intake Manifold - The 1947 - Present Chevrolet & GMC Truck Message Board Network

r0lf- · 03-27-2003, 12:53 AM

Does anybody know a intake manifold with EGR for Vortec heads, I know Edelbrock makes one for 96 and up heads, but I dont think that would work with my '80 350 block and some Iron Vortec Heads.

*1FaastC10* · 03-27-2003, 01:07 AM

yes, it will work. but the EGR must be plumbed externally, as the Vortec heads have no exhaust crossover passage.

Prerunner1982 · 03-27-2003, 01:53 AM

ahhh the freeness not having to have EGR.. and smog pumps and such.. i also plan on doing the vortec head swap..

Senor_paco · 03-27-2003, 02:39 AM

I just wanted to make sure on those Vortec heads and manifold: They'll fit on my '77 350 no problemo? I'd hate to spend that much cash for the wrong parts.

Prerunner1982 · 03-27-2003, 02:46 AM

they should.. just have to use different valve covers and intake..that and as long as your cam doesnt have too much lift..

Trick76 · 03-27-2003, 10:46 AM

Quote:

Originally posted by Prerunner1982
they should.. just have to use different valve covers and intake..that and as long as your cam doesnt have too much lift..

You can also get Z28 springs from Scoggin-Dickey for like 25 bucks and spend about 50 bucks on machine work if you need more cam. They are good to .490 lift

Derek

r0lf- · 03-27-2003, 11:21 AM

Quote:

Originally posted by 1FaastC10
yes, it will work. but the EGR must be plumbed externally, as the Vortec heads have no exhaust crossover passage.

What do you mean by that? Plumbed externally? Like from the valve covers.

Im really dumb when it comes to emissions. (And I have the toughest laws of them all

)

Tom · 03-27-2003, 11:44 AM

Stock vortec motors use a hole in the drivers side exasut manifold to send exaust gases into the EGR valve. Thats external. On normal heads, there is a port inside the head that lets exaust gases escape the exaust port back to the EGR valve.

LOHRTBT · 03-27-2003, 12:35 PM

I heard someone say you have to get "self aligning" or some other type of springs??? is this true?

Tom · 03-27-2003, 01:12 PM

Quote:

Originally posted by LOHRTBT
I heard someone say you have to get "self aligning" or some other type of springs??? is this true?

Yup. Self alinging ROCKER ARMS. Come stock on 87+ motors.

LOHRTBT · 03-27-2003, 01:44 PM

ok..that was it!

Ol' Grey · 03-28-2003, 02:44 AM

Quote:

Originally posted by Tom

Yup. Self alinging ROCKER ARMS. Come stock on 87+ motors.

Wouldn't pushrod guideplates work instead?

Tom · 03-28-2003, 11:53 AM

They sure do, but then you need to pull the pressed in rocker studs and tap them for screw in studs so you can use guideplates. Its a good idea anyways, but some people dont wanna fork over the extra cash on mild applications [like my 383 back in the day when I got my vortecs]

Ol' Grey · 03-28-2003, 12:07 PM

Quote:

Originally posted by Tom
They sure do, but then you need to pull the pressed in rocker studs and tap them for screw in studs so you can use guideplates. Its a good idea anyways, but some people dont wanna fork over the extra cash on mild applications [like my 383 back in the day when I got my vortecs]

Good point.

03-27-2003, 12:53 AM	#1
r0lf- Hotwheels? Join Date: Dec 2002 Location: Pleasant Hill, CA Posts: 1,145	Vortec Heads Intake Manifold Does anybody know a intake manifold with EGR for Vortec heads, I know Edelbrock makes one for 96 and up heads, but I dont think that would work with my '80 350 block and some Iron Vortec Heads.

03-27-2003, 01:53 AM	#3
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,904	ahhh the freeness not having to have EGR.. and smog pumps and such.. i also plan on doing the vortec head swap.. __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

03-27-2003, 02:46 AM	#5
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,904	they should.. just have to use different valve covers and intake..that and as long as your cam doesnt have too much lift.. __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

03-27-2003, 11:44 AM	#8
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,749	Stock vortec motors use a hole in the drivers side exasut manifold to send exaust gases into the EGR valve. Thats external. On normal heads, there is a port inside the head that lets exaust gases escape the exaust port back to the EGR valve. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

03-27-2003, 12:35 PM	#9
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	I heard someone say you have to get "self aligning" or some other type of springs??? is this true? __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

03-27-2003, 01:07 AM	#2
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	yes, it will work. but the EGR must be plumbed externally, as the Vortec heads have no exhaust crossover passage.

03-27-2003, 02:39 AM	#4
Senor_paco Registered User Join Date: Mar 2003 Location: San Antonio, TX Posts: 441	I just wanted to make sure on those Vortec heads and manifold: They'll fit on my '77 350 no problemo? I'd hate to spend that much cash for the wrong parts.

03-27-2003, 01:44 PM	#11
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	ok..that was it! __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

03-28-2003, 11:53 AM	#13
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,749	They sure do, but then you need to pull the pressed in rocker studs and tap them for screw in studs so you can use guideplates. Its a good idea anyways, but some people dont wanna fork over the extra cash on mild applications [like my 383 back in the day when I got my vortecs] __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.



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