ported intake
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,215
From: Park City Utah
I don't believe that there is enough material, regardless of year, to get the flow that an aftermarket base will deliver. If you wleded up the roof, and made a raised runner, you might get close and end up w/a better head entry angle.
Pro
Joined: Jun 2001
Posts: 520
Likes: 6
From: Elverson PA
I can't find it right now, but there is an article where someone tested all different intakes on the tpi. One thing they did was test an extrude honed factory intake base, and it performed ALMOST as well as the TPIS. I think others have ported it by hand, so you should be able to get similar results. I've been thinking about it, because all the base intakes are around $500!
Team Owner
Joined: Dec 2007
Posts: 20,974
Likes: 261
I had one that was a GM base, and the guy that bought it had the accel one also, he compared, and they were the same. You can port the after market a little more, but on a stock 350 motor or even bigger, I doubt that tiny bit you would ever feel, might show up on a dyno, but IMO it would really only show on a flow bench which doe not really mean too much when you get to that point.In short save your money and port like nuts, or buy a used one someone did already.
Pro
Joined: Jun 2001
Posts: 520
Likes: 6
From: Elverson PA
In this article they compared a stock tpi to an extrude honed base with large runners. Not exactly what you are talking about, but fwiw http://www.compcams.com/Community/Ar...?ID=1737510521
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
It will run at least 300-400 to have a pro do your stock base to that extent probably more. Its a royal pita and extremely time consuming should you go though it too far in where you cant weld it the manifold is junk be careful. Id look for a used aftermarket base and do some cleanup work if you had to.
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Thread Starter
Instructor
Joined: Jul 2007
Posts: 112
Likes: 3
From: Pace fl
its a 86e but im building a new motor zz short block 180 afr heads 1.6 roller rockers the thing is i was thinking of buying a polised plenum with slp runners but the intake is stock but supossed to be ported pls it has the 58 throttle body and the plenum is ported but i would hate to have to buy a new intake as well oh i still need a cam leaning towards the 211-219 lpe any opionons
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
It's a 86e, but im building a new motor. A zz short block, 180 afr heads, and 1.6 roller rockers. The thing is, I was thinking of buying a polished plenum with slp runners, but the intake is stock and supposed to be ported. It has the 58 mm throttle body and the plenum is ported, but I would hate to have to buy a new intake. Oh, I still need a cam. I'm leaning towards the 211-219 lpe any opinions?
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
I didn't correct his grammar boys. Might want to look that one up. A little punctuation and spelling would be nice. If you get a red line under a word it means something is amiss!
Thread Starter
Instructor
Joined: Jul 2007
Posts: 112
Likes: 3
From: Pace fl
makes me want to try for my ged again if i could git a bit of tooturin...but me passed p.e. with flyin colors and i type with to fingers alsotook me 20 minutes just to type this but thats checkin my spellintwo
lol lol
lol lol
