I hear criticism and compliments about the TA manifold verses the stock 4bbl manifold on this forum. What are the real flow spec's, stock vs TA?
Hey Easy Company 7 I have two small block TA Alum intakes!! On two of my rides no issues at all!! One has 85,000 miles on it. The other I got rid of the 90lbs egr one and made the engine run much better.:laugh:
Here are the Dyno test #'s posted by Tim a while back. Some people report gains, some report none... http://www.v8buick.com/showthread.php?t=54585&highlight=ta+stock+intake+dyno
I think the TA manifold will show gains with head porting. Simply bolting it on a stock engine is good for weight loss and cooler running, that's about it. The TA manifold should outflow the stocker, but not if the heads don't demand it.
We found the T/A stg.1 gave us about 8 cfm increase in airflow with stock heads and manifold. About 18 hp. With headers alone it picked up another 6 cfm and 12 more ponies. Now throw a ported set of heads with the bigger valves in the mix and the manifold really kicks up the numbers. This is without modifying the manifold, using a 800 Qjet, and the stock cam. About 48 hp.
Thanks for all the info guys, my son put the TA and 1 5/8 headers on, and a cam similar to the TA112 specs, before he left for basic. Wanted to see some measurable stats on this. That thread from 2004 was good too. Thanks!
...and, of course, that question just leads to this one... How does the T/A compare to the Poston and how does the Poston compare to the stocker? After all, isn't he T/A just a rebadged Eddy Performer? The Poston looks more "Weind-ish" to me, but that "S-divider" they use may make a difference. Bob
Absolutely not. The TA intake is much nicer than any Edelbrock offering. You need porting to really take advantage of this intake. I've never really seen anything outstanding about the S-divider, 350 or 455 versions. Some guys are sucessful with it using a carb spacer and jetting changes.
actually id take an edelbrock manifold if they made them for the buick 350.used em for years on my small block chevys. great company and i see some of u big block guys use edelbrock too. performer rpm air-gap on a buick 350 would be sweet!!!:TU: ralph sr.
I notice a lot of similarity in looks between the Poston and the T/A intakes. That would be quite interesting to see what the power difference between the two would be. ...I'm starting to imagine a 350 Stage 1 that sounds very appealing to me. I don't notice anyone offering bigger valves anymore. I know Poston used to offer a 350 Stage 1 cylinder head that was a stock iron unit with larger valves in it. I think the combo was 1.92 / 1.55. So if you start with a baseline 190HP low c.r. motor, you could realize about a 30HP increase utilizing the cam, bigger valves (I'm sure they're around somewhere) and changing to the '68 c.r. ...hmmmm... Bob
Most of the heads that have been ported and flowed are using the oversized valves this is becoming common with performance Buick 350 builds. call TA or PAE or any of the other Buick specialty shops they will hook you up. Keep in mind when talking/upping compression ratio (cr) with these motors: The deck height is taller on the later (73 and newer) blocks which means the early pistons still give lower ratio then you may expect The 68-72 motors use the steel shim gaskets that can be used to fine tune the comp ratio (ta sells various thickness). During changeover some 72's could be either new or old style. Extra coolant scallops between heads and block make it a real pain to use the early heads on a later block but the reverse is fine (late heads on early block... not that there is any performance reason to swap heads for yr to yr) cr from factory are wrong (low). Measure and calculate and you'll find at least half point lower than advertised Milling the block and or heads can increase comp ratio but remember that this will change the geometry of the intake sealing surface so if you mill allot you'll need to get the intake machined to match. Use the special TA intake gasket to help get a good seal. 30 thou decking can be done with stock pushrods. More than 30 get new ones using adjustable to measure after desired cr is met.
Good information, thanks for posting that. I'd forgotten about the change in deck height. I think that was done to eliminate the shims, IIRC. I'm sure someone offers high compression pistons (10:1) for the tall deck block. ...oh yeah, and who said anything about porting? I mention valves and everyone goes on a porting trip. Me thinks a couple of you guys need to step out of the garage for a few. You've been breathing just a leeettle too much CO, lately. uzzled: Bob
Hey, I was just asking about the porting comments. I mention valves and everyone responds with porting comments. ...just found it a little odd, that's all. Bob
