Now it is time to do some clean up / port work here is a picture of the carb base anyone have any pictures of there domintor intake not sure how much of the area under the carb that needs to be remove??there is alot of talk on here about the heads lets not for get about intakes!!any suggestion would be great!!
is that how it was shipped from ta or did your local machine shop modify that for dominator.either way it looks like it was definatly cast for 4150 and i guess they dont cast them for dominator.if i was you i would prob look at a big chevy intake already cast for dominator just to get the right shape.thats pretty sick how you get that car to yank the front end up like that on those little ass tires
SPX is done differently Those are pic's of the SP1,2. The SPX is the same intake as in Gary's pic.......Chris
Looks good. I'll trade ya carbs straight up. :laugh: :laugh: Hope it works out for you. Your old carb works great on my 464.
Great thanks Gary that looks good I don't have to much work on it then I was thinking I had to take the divider down more than that, Thanks
I did alot of work to the plenum in my SPX. If you're going to run any kind of open or SuperSucker spacer (I highly recommend you do), think about those "ears" sticking out into the flow path. I talked to Mike T about this and he agreed. That clover shape was not intended for open spacers. Those ears will hinder the airflow. I rounded those ears down until they were almost gone, but were rounded nicely to guide the air to the ports. Next you have to look at the transition between the carb opening and the port opening. The air comes down out of the carb and has to make an abrubt turn into the ports. Air doesn't like sharp corners. Take those machined "holes" that form the cloverleaf and blend the bottoms back into the port openings. I started by just holding an air nozzle in the corner pointing down into the plenum to simulate the carb, and then feel the air coming out of the port with my hand. You'd be surprised at how much more air comes out by just taking out that sharp corner. You will see some of the old "Cool Runner" intakes where people have welded several beads of alum on either side of the plenum so the transition can be "rounder" and smoother. Mike added more material to his casting, so the welding isn't necessary. It's alot of grinding by hand, but it makes a big difference. I didn't take any pictures of mine when I did it. Maybe I'll take some next time the carbs off. Also, a certain person who knows alot about the Wildcat intake (flip it over), told me that it helps to extend those dividers father into the plenum. I haven't tried it, but it sounds good. Have fun.
Looks like Boy, looking down the pipes on that thing will make the chevy guys quake like Nixon when Deep Throat ruined him back in the 70's. Most of you probably don't remember Deep Throat, or you weren't alive at the time. :laugh: :laugh: Looks great! Weekender
Yes I know that. And if you read the catalog it says refer to page 33 for more info for the SPX dominator. The more info is the picture I posted. And it says right in the first pic SPX!!
buickbuddy Sorry buickbuddy but the pic's you posted from TA are not of the SPX plenum, they are of the sp1 and 2 plenum. I think that is a general pic out of there book. They are two totally different intakes ....Chris
I have no idea where you are getting your info Chris. o No: But is says right in the pic that the same plenum is used on all 3 intakes. :TU:
What TA means is that the cut (machining) is the same on the carb pad, but the plenum area is totally different between the two intakes. Note how the second photo of the SPX has only two dividers that come to the plenum area. The SP1-2 have all four on each side come up to meet the plenum. Different runners and different flow characteristics. In the photo of the SPX, the runner wall enters the plenum directly under the carb venturi. The SP1-2 runner cavity enters under the venturi.
Where do I get my info? Buickbuddy,I'll tell you where I get my info. I've been a TA distributor for 10 plus years and have been working with there parts since the late 80's early 90's and have built many buick engines for customers using these parts. The pic that Gary posted is the same as the SPX intake formally known as the Wildcat intake. The two pic's you posted are of the SP1(for standard port) and SP2 (for tall port) as it states in your pic's before and after. If you notice in the before pic you can see the lip (eye brow) on all 4 cornes of the clover leaf that Mike cnc's into the SP1/SP2 Dominator intakes only, they are to help feed more air/fuel to the four inner runners due to them being longer. Long before Mike started doing this with the cnc machine he told me how to do this with a raw casting by hand, it took many hours. Now they come like that, just another step by Mike to make things easier for his customers. The after pic shows how to blend in the short turn and the lips of the eye brows. The SPX plenum is totally different , if you look at Dubuick's and Gary's pic's the runners are dead center of the clover leaf and DO NOT require the lip/eye brow to redirect air/fuel but do require work on the divider. The pic's are a bit miss leading but I think they a referring to the fact that they are all cnc'd to some extent. I can understand how you could get confused but the only thing similar is that they are both Dominator flanged......Chris
Now that is my next question on what spacer is better I was thinking a four hole job with the funny looking under side I think that is the super sucker your talking about ???
Although this isn't a exact comparrison because only the spx is the dominator flange. This a direct comparrison of the spx and sp1 plenum side by side. My old sp1 and my new spx. Hope this helps. By the way because of all the improvements in the spx over the wildcat should be a lot less to have the spx fully ported if so what would be a ball park figure. Anybody?
