[TABLE="width: 100%"] <tbody>[TR] [TD="width: 100%, colspan: 4"]Product ID: TA_112-350 350H.455"-210'/.468"-215',110' [/TD] [/TR] [TR] [TD="class: detailimage, width: 100%, colspan: 4, align: center"] [/TD] [/TR] [TR] [TD="width: 100%, colspan: 4"]Excellent street cam, giving 20 HP increase over stock cams. Good fuel economy, stock valve train ok. Smooth idle. 8.0:1 to 10.0:1 CR Idle Quality: Smooth Idle - just like stock Good Idle - mild lump, but doesn’t impair driveability Moderate Idle - nice performance sound Fair Idle - heavy lump Rough Idle - very lumpy race type idle VALVE LIFT STOCK 1.55 RATIO: IN: .455” EXH: .468” TA ROLLERS 1.60 RATIO: IN: .470” EXH: .483” DURATION AT .050 IN: 210 EXH: 215 ADVERTISED IN: 260 EXH: 262 LOBE CENTER: 110 POWER RANGE: 1100-5500 Its this a good cam for my motor [/TD] [/TR] </tbody>[/TABLE] ---------- Post added at 05:14 PM ---------- Previous post was at 05:13 PM ---------- [TABLE="width: 100%"] <tbody>[TR] [TD="width: 100%, colspan: 4"]Product ID: TA_112-350 350H.455"-210'/.468"-215',110' [/TD] [/TR] [TR] [TD="class: detailimage, width: 100%, colspan: 4, align: center"] [/TD] [/TR] [TR] [TD="width: 100%, colspan: 4"]Excellent street cam, giving 20 HP increase over stock cams. Good fuel economy, stock valve train ok. Smooth idle. 8.0:1 to 10.0:1 CR Idle Quality: Smooth Idle - just like stock Good Idle - mild lump, but doesnt impair driveability Moderate Idle - nice performance sound Fair Idle - heavy lump Rough Idle - very lumpy race type idle VALVE LIFT STOCK 1.55 RATIO: IN: .455 EXH: .468 TA ROLLERS 1.60 RATIO: IN: .470 EXH: .483 DURATION AT .050 IN: 210 EXH: 215 ADVERTISED IN: 260 EXH: 262 LOBE CENTER: 110 POWER RANGE: 1100-5500 Its this a good cam for my motor [/TD] [/TR] </tbody>[/TABLE]
Yes this will work fine especially if it really is a 8.5 comp motor. The 212 cam is the highest I would go with what you have now. You can see that this cam will work all the way up to 10.0 comp so if you upgrade other parts later on the motor you can still use the same cam till you get past this point of cam selection. You are always better off with too little cam than too big.
So with 9.5:1 compression a TA 290 would be around 7.23:1 DCR for me, and if I installed it at a 102* ICL I could get my DCR to 7.5:1. Is that possible though if I mill the heads .040"? I know this is all WAG's as far as clearance concerns go but I just want to make sure I am not completely out of the ballpark. The C113 on the other hand would be at 7.5:1 right out of the box (installing at a 109* centerline) which may give me more room to play with degeeing the cam to boost my DCR a little. I hope I don't sound absurd with all that desktop engine building but I am trying to get a general direction for my very near future top end build. Not intending to steal the thread, just throw in a new dynamic as far as giving the OP an idea of how different cams and cam timing affects DCR
I see no reason to go with a larger cam than a TA 212 unless the heads are VERY well ported. The loss in low RPM torque is just not worth the gain in high RPm HP in most cases. Might as well keep the static compression at about 9:1-9.5:1 so you can run regular grade fuel. Or if you want to get serious, have the heads ported heavily, larger cam, and a converter in the trans to match along with a low gearing in the rear end.... Or, just keep the stock cam, converter, and gearing and add twin turbos to make the engine breath well.
If you really want that thumper cam with a comp ratio in the 7.5 range....you best add a 3500+ stall converter and alot of gear to get that thing into a power band that will make you wish you hadn't used a smaller cam.....Then be prepared to rebuild the thing when you rev it so high that it comes apart. My motor has a bit larger cam than a thumper and it has 11-1 comp ratio and a whole lotta parts and it still could use more than a 3200 converter and the 3.92 gears I have in it now.
Yes, you have built the whole CAR around the larger cam.. Many people try to JUST change to a huge cam and the results are terrible...
I am referring to DCR I know that for static compression even 9.5:1 is a little low but my question is how far can you advance the cam before you run into issues other than clearance issues? Is 8*advanced too Much? I have a 2800rpm stall converter and 3.73s
Notice he didn't say hogged out as big as you can go. The key is porting for your goals. VERY mild bowl, guide, and short turn work with a mild cam will make for a burly feeling motor, with decent upper rpm power. The torque will be of much more use over a big cam with crappy heads. Even with good heads and a big cam the car will be a dog unless everything else is setup to match.
No, you would be better off using a more well suited cam set at about 4 degrees advanced. Normally with the 350 we degree the camshafts at 0-4 degrees for best results. Good point, that is why I say VERY well ported. Here is some info from a few head porting projects: http://www.v8buick.com/showthread.php?120529-350-head-project&highlight=heads head porting thread:http://www.v8buick.com/showthread.php?t=120529&highlight=heads < Click thumbnails :Comp: :Comp:
dauntless....listen to all....we have been there and done that...I have 3k plus into my heads and with all the parts and a cam not much bigger than the thumper your looking at I still have to get the motor in the 3500 plus range before it really goes.
I bet it would love a 100 shot off the line! This would solve your too low of a stall on the converter issue.
I'm not looking at the thumper cam I am looking at the ta290 which I don't think is too far out of range considering what my framework is. I don't think you really need 10.25:1 compression to run it do you?
A Buick engine will want a split pattern cam unless you are running Stage2 heads. Even a ported head will want more exhaust duration than intake. The TA290 is a straight pattern cam. When a cam vendor recommends a certain minimum static compression ratio, it is so the DCR will be in the desirable range.
Nothing like a wakeup call. I ran just a 75 shot and still went 12.10@110 ---------- Post added at 11:47 AM ---------- Previous post was at 11:47 AM ---------- Nothing like a wakeup call. I ran just a 75 shot and still went 12.10@110
you guys got me !!!! just ordered a coan 3400 stall and a nitrous kit to boot..........lets see what happens.
YEAH! That will be fun to see! ---------- Post added at 05:25 PM ---------- Previous post was at 05:25 PM ---------- YEAH! That will be fun to see!
Yeah that's the ticket. Hopefully it isn't too loose. The one I had with the turbo 350 was on the loose side and I would blow it to 5 grand and it would stay there after shifting. Get some NGK plug that are not the extended tip ones, same as stock AC's with a point system. the plugs with HEI are the extended tip kind. On mine the lean cylinders turned out to be numbers 2 and 4. I run the Holley dbl pump 750 with 1 inch open spacer. Nice you are going to love the nitrous, it is Dr. Jeckel and Mr. Hyde. ---------- Post added at 09:46 PM ---------- Previous post was at 09:46 PM ----------
Not trying to steal this thread but....I run the ngk's now and with the 830dp with 82 fronts and 85 rears it is still not on the rich side...only a couple look leaner than others ( 1 and 7 ) but the plugs look great. ...Am thinking the nitrous will surely help the bottom, just wondering how much fuel can I dump down it's throat !!
