Vortec Intake Manifold

[FreeBeeTony]

Which is the prefered intake for the Vortec heads?<br /><br />I had the high rise for the non-Vortec heads.<br /><br />Is a high rise better?<br /><br />I was loooking at the Edelbrock .<br /><br />I also saw a cast iron high rise .<br /><br />Here is another ........This looks like the one I had originally.<br /><br />Does the high rise produce more torque or HP?<br />Which would be better for marine performance?<br />The Edelbrock is cheapest....

 

[f_inscreenname]

Re: Vortec Intake Manifold

I use a Edelbrock "air-gap". I have used them on two boats now and have never been happier with a intake. I would stay away from cast iron due to the weight alone but there is some here that wouldn't use anything else.

 

[FreeBeeTony]

Re: Vortec Intake Manifold

Doesn't look like the "air-gap" is available for the Vortec heads.

 

[Bondo]

Re: Vortec Intake Manifold

Hi Tony,......<br /><br />You're looking for a Mid-rise,... or High-rise,.....<br /><br />The High-rise is More for HP than torque,.....Of Course,...HP is a mathamatical # found using the Torque #s...<br />The Higher the Rise,.. The Powerband Will be moved Up the RPM Scale,.......<br /> The Vortec heads Ports are Already .200" Higher than the original.......<br /><br />Any of them will work Just Fine,...... As long as it's a Dual-Plane Manifold...........<br />A Single Plane manifold will Kill the Low-end Torque..............<br />Dual-plane Vs. Single-plane is More important than How High the Rise Is..........<br />The Edlebrock will work Just Fine....<br /><br /><br />BTW,...... I had No Luck finding the .018 Headgaskets I found the other nite,... I'll try again tonite........

 

[FreeBeeTony]

Re: Vortec Intake Manifold

Thanks Bondo....I pulled the engine today.....what a job!<br /><br />Tomorrow I plan on replacing the pan and rear seal. Should I pull the pan first and then the rear seal? I removed the bolts from the rear seal retainer. Now the engine is on a stand and it won't be too easy to get to those bolts again. I hope when I remove the pan the rear seal comes out easy.....<br /><br />As far as the inatke is concerned....I think I like the aluminum high rise......<br /><br />How much HP do you think the set-up will make?<br /><br />I am thinking 310+.......judging from what else I have seen with the new Vortecs.......

 

[rbezdon]

Re: Vortec Intake Manifold

Tony,<br /><br />If you boat in salt dont use the aluminum manifold. The salt will eat it quickly and deposit aluminum oxide all over your cast iron parts. I was strongly warned before I bought mine but I boat 100% in fresh water.<br /><br />OOPS, I forgot you have a closed system with anti freeze so you should be fine. Sorry.

 

[FreeBeeTony]

Re: Vortec Intake Manifold

Hey vatter..no problem.glad you're still watching my progress.......

 

[rbezdon]

Re: Vortec Intake Manifold

I worked the last week and a half from my China based factory. I watched your posts on the heads and gaskets (hope Bondo found the one your looking for) and the oil pan and all. You are into a heck of a job. Mine went easier. Be careful playing with the quench height though as the intake manifold may not bolt straight on with non standard thickness gaskets. Good luck!!

 

[vettman]

Re: Vortec Intake Manifold

Hey freebeetony; Jegs sells the Air Gap your looking for.Part#EDL 7516 $225.95. Its for automotive use, don't know if that matters.

 

[FreeBeeTony]

Re: Vortec Intake Manifold

Looks like that Edelbrock 7516 is for higher RPM's.....1500-6500<br /><br />Think I like that GM high rise..

 

[vettman]

Re: Vortec Intake Manifold

Hey freebeetony; What's the RPM range of those manifolds you mentioned? I thought that if your motor is within the range it's the right setup.

 

[FreeBeeTony]

Re: Vortec Intake Manifold

The other manifolds are idle -5500RPM's....