Welp......I bolted on a Poston S divider and went from a 14.70@94, to a 15.45@ 88! Backed it up with a 15.46@88!! Is this a joke or something? How can someone advertise a product with a horsepower gain that does this? Between this and the one guys test of the TA unit that added three HP, I'd say there is a lot of fudging going on to sell products. Luckily I bought my piece of crapola used, so the financial hit wasn't bad. It will be removed tomorrow ASAP, and I will probably sledge it! Be warned. DO NOT BUY A POSTON 350 S DIVIDER!!!!!!!!!!!!!! Don't listen to claims. The proof is on the track and street. :af:
I'm sure someone is going to mention that after an intake swa it may be necessary to re-tune your carb and perhaps even timing to get optimum results. But! I agree with you; I think figures are grossly exagerated by almost all manufacturers to sell more of their products. I think there are some good things out there, but seldomly do they perform as promissed. I guess it just makes you appreciate a board such as this that much more when you can learn from other peoples experiance rather than spending all of the money yourself. Soooooo. . . . . since it seems you may have saved me a few bucks of my own by sharring your results, I'll send you a check for $15 to help cover this lesson learned. . . . . . PSYCH!!!!!!!!! :laugh: :laugh: :laugh: :laugh: :laugh: Sorry man, but thanks!
Awwwwshooot, Dan that stinks, after all that wrenching just to lose 3/4 of a second. How was the alignment on the intake gasket? Did you have the cast intake before? Still hoping to get your parts out this week. Good luck Bud, D.
Yea, I wouldn't buy anything Poston unless I had no choice. Most everything TA sells is great but the 350 intake isn't much more then aluminum instead of iron. Until a better single plain is produced I like the idea of adapting a chevy or dodge one. Id like to see more of that done.
Dan, Before you ''drop the hammer'' on it, send me an email( buickdav@yahoo.com ). Would like to ask you a couple questions about it and maybe we can work something out for it. If your serious about getting rid of it. I am interested in it. Good numbers have been made with both intakes, they just have to have some work done to them........... Later.................
Just my input. When we designed the 350 intake 20 years ago (hard to believe) it was based after the GM intake for fit. The intake was drafted by Ed Mosler, still have all the drawings, and when compared to the GM drawings you can see the changes that were made. Plenum and runner volume were increased a fair amount to feed the long stroked 350. Once the drawings were completed, core sticks were made and more dollars were spent on the front side to have flow boxes casted in plaster to be tested before permanent tooling was produced. The plaster flow boxes still exists at TA Performance. These air boxes clearly out flowed the factory iron intake, and at that point the project continued. Once we had a machined intake it was sent back to Ed Mosler for further testing. Ed started by flowing the two intakes for comparison, TA intake passed that test. Flowed a 350 cylinder head without any intake, then with an iron intake, then with the new TA intake. That test resulted in the cylinder head flowing more air with the TA intake than without any intake at all. Very surprising. Ed said this was because there was something not right with the port in the head. Being there was nothing we could do about that, it worked out for the good. The intake was released to the public, at that time through Kenne-Bell only. This intake went through more independent testing, well I was so tired of it, it wasn't even interesting any longer, the results are what is writen in the TA catalog, "customer feed back". The SP-1 big block intake went through the same thing and still is to this day. Anyway, we have had very few folks over the years that did not see acceptable results from this intake. I did not see the post on the 3 horse power gain test, but was informed by Jim Wiese. Many factors, I have no answers at this time. But I will say this, I would not throw the towel in because of one persons/engine dyno results. This intake is of a proven design in the our automotive market place. Dan, I have a simple view point of the S-Divider also, if this was of a proven design, the folks like Edelbrock, Offy, etc., that make there livings designing, manufacturing and selling intake manifolds would also offer this type of design. They do not, never have, and most likely never will. You decide. Although some people have had good luck with that intake. This is a very simplistic view point I start with whenever I start a new project. There are many people and companies at a much higher level of performance than I, so we at TA just keep our eyes & ears open and learn from others success, pull it together, and work our hardest to incorporate it and supply the best possible product we can. Don't try to reinvent the wheel. Quote; Jim Bell, Kenne-Bell, year1983
T/A Intake vs stock iron intake results! http://v8buick.com/showthread.php?t=54585 -------------- Whats the time table on that new 350 intake MR. TA??? 05 - 06
Dan, you might have leaned out the mixture a little with the increased airflow. Go a little richer on the secondaries. It would also help if you posted the DA between the 2 different runs. I run deep into the 11s with cooler denser air and around 11.9-12.0 on a 90 degree humid day. Once you have the DA information, you can see true gain/loss. You can calculate the DA using NWS historical info that's available on the web. Shoot me an email if you need a hand with the calculations.
Wow, thanks for all the replies. If you can't tell, I was plenty PO'ed last night. It was the perfect race night and I was benched :af: You see, I took today off work so I could stay up late, the weather was perfect, and there were a $###load of cars in the 14.50-14.80 range out there. Basically, it woulda been the perfect race. After a couple races I HAD to walk away from the car. I just couldn't deal with it. I've been busting my hump for two damn years to build a car with almost no $$$, and I'm getting sick of it! So last night coulda been the Regal sledge-a-thon had I kept at it. so anyway, Mike at TA, Thanks for your reply. Once again, I have never dealt with a company that has customer service like yours! I will always deal with your company when I can. The work on your companies intake was well thought out. But the real world testing that was done, I think, is a little more reflective of what the average motorhead without computerized flow equipment is likely to deal with. But hey, yours did show a gain! Not like that piece of #*%$# I put on my car. Artie, I rejetted the quad to 72s. By looking at the plugs I'd say I'm OK their, but I'm gonna check em again today since I really wound it out last night. Well.....tried to wind it out. the thing fell flat after 4000 rpm. 69 GS Cal, Nice Psyche! But seriously, I wanted to post those real world results asap. test shmest........the proof was on the track. Dave, I guess I'm calming down a little now. So sledging it might be extreme, although I wish I had a parts car laying around to smash! Anyway, its gonna get swapped today. I'm gonna take a good look at it and see if I think its got enough meat for a HUGE winter porting project. I like to think if I ever get this car fast, that I'll have to port the heads and intake . And I guess I'd rather port aluminum than cast Iron. But I'll keep you in mind since I'm always having to sell one thing to buy another.
Well, now I don't know if I should install mine. I have had it for a while, but never put it on. What to do??
Were the ports matched? The one I worked on many moons ago had MUCH smaller intake ports than the head out of the box. Picked up a tenth and 2 mph after grinding..... Bruce
No Port matching. The Ports are smaller on the Poston unit. I realize that porting/port matching will help. But this was a bolt on test which is more likely to be what most folks are able to do. Remeber, these things are sold new claiming to add like 30 hp, and I don't believe they mention porting is the way to get it.
Dude that thing is haulinnnnnnnnnnnnnnnnnnnn..... Yep an intake for near $300 new should not need any work. It should just bolt on and just perform.
Bruce - Is that tenth and 2mph over a stock 350 manifold, or is that how much improvement you got compared to an unmodified S-divider?
That was over bolting it on not opened up. Before opening it up it was slower than the stock intake. The secret may be in the jetting but we never figured it out. Saved weight though! It did 60 ft better.....the stock intake was alot heavier to toss. :Brow:
Sorry for your troubles Dan..... but I gotta say that you come up with some of the best pictures on this board! :laugh: ...wheelstanding mowers, flaming matchbox car action shots, star wars breather helmets .. etc.. and now intakes that really fly!! p
