Unfortunately Extrude Hone can't localize in only one area. It's a whole or nothing type process. Whereas hand porting you have the options of removing material where it's nec. not just "Smoothing" out an existing surface. It's does make a diff. don't get me wrong, but for the cost per $$$$$ part I would believe that a "Hand Job" would be better if there are some patterns to go by. Like I've said many times in the past, "I don't believe you could ever "Over Port" our "Heads". As fully worked they can only supply enough air for a good running 322. It doesn't seem like much of any port velocity is lost, but you do have to know what areas to concentrate on. Making HP is all about passing "AIR!!!! We always have to keep in mind how an engine works & it's the same for ALL internal combustion engines. Density (air) which = RPM's which = HP. Just my thoughts, Tom T.
Hmm...I still trying to figure out what I can sell to afford them now... Can't sell the car...that's where they go. Can't sell the wife because she actually likes cars and wants a 48 Buick convertible of her own...thank you Lord! Can't sell my tools...kinda need them to put em in. I know how about my computer!:idea2:
Ted I just saw your post on the W-30 cam as i was ejumucating myself on Tom's rockers. I had Carmens W-30-10 cam in my 65 GS and it was awesome. lots of low end torque and plenty of upper rpm power and that was with stock manifolds and stock rockers.
I believe it was Mike at TA performance that said there isn't yet a cam that takes advantage of the roller rocker profile. I'm sure Tom, Dave, or maybe Carmen would have some insight into that. The roller rocker will help any cam... Primarily by providing more valve lift without putting the burden of fast ramps on the cam lobe. I was told the stock Nailhead cam lobe profile already has one of the fastest ramp designs used. So it would be difficult to achieve the same performance gain of the rockers by just using a different design cam. The cam design has limitations... It's the roller rockers that make up for those cam limitations. It would be cool to see the geometry of the whole cam/rocker/ valve assembly in action on a hi-tech, 3-d, CAD, and 40" monitor screen!
Yesterday the weather was 55 and sunny. The car still needs a lot including a front end alignment.Its way out.The only place I should be driving it was to the shop. But I Had to take it around the block a couple times . This time from around 10 miles a hour roll I floored it for a couple seconds and it was going to burn rubber till I let off and it has a differant feeling. I floored it in second for a few seconds from about 15 miles per hour and itstarted to bur the tires pretty good. It would never have done that before. I still have not run it through the gears hard yet.SOON. These rockers do work. It ran good before but now it just seems to have more breathing capabilty.:TU: The one bad thing about these rockers are now my new tires with about 20 miles on them are not going to work
I just had my motor rebuilt with the addition of Tom's rockers and without a doubt, they are worth the money and then some! The car breathes so much better, improved torque and horsepower, plus the awesome sound now that it can breathe! It also has a much broader powerband with more power at the top end than before. Besides the rocker arms, the biggest benefit through the rebuild process is the unbelievable amount of info from Tom's many years of experience with Nailheads that helped us avoid applying generic (chevy) rebuilding techniques (and the resulting problems) to a unique motor, saved time and money, and let us put together a motor that is an improvement over stock in every way! Think about this: not only do you get improved HP and torque, but with the improvement in mileage together with the current gas prices, the rockers end up paying for themselves in gas savings! I'm no mathematician, but doing the math for my GS going from say 16mpg to 19mpg gives me an extra 50 miles per tankfull and at today's prices that saves me about 3.125 gallons. After 85 tanks of gas, I will have saved over 960.00, covering the cost of the rockers and shafts. The only problem now is that I don't fill it up as often so 4.7 years ought to get me to 85 tanks of gas. The point is that there is a return on investment! Here is a link to some pics of my ride on page 16 and 17 of the Member's Rides section of v8b. Again, thanks Tom, for everything!
I got to take the car for a nice little ride sunday. The rockers work very good.It used to run out of air and power up top. Now it keeps the power up top.I have dumped the clutch giveing it all she had before and it would burn rubber but it would hit that spot and you knew you needed to hit second. This time I was rolling about 10 mph and sliped the clutch and put it to the floor. The nail just went ape **** and did not loose anything up top and left a 100 ft posi mark. No more running out of air up top anymore. I was just dying to do that. HEE HEE HEE. I also want to say thanks to Tom T for all my phone calls and discusion about our nailheads.If you can afford them they are worth the money.:TU:
Jared - Tom Telesco is at the shop from 8-5 M-F give him a call. I know he has a few sets left from this run, but they are going quick! :TU: Classic & Muscle Resto 203-324-6045
I too have built a 401 Nailhead here at our shop with Tom's Rockers. They are great! If for nothing more than just the adjustability! They are the complete package and I recommend them to EVERYONE who has their nailhead apart or is looking for more GOW! Mike
================== Ted: Was this done in leiu of porting or after someone had ported it like gassler? Thanks, Ty
:TU: Rather than start a new post, I thought I'd add this in here. This past weekend, a friend of mine ran a 11.35et with his 401 powered Henry-J. This motor combo has been discussed in the past loosely on other threads. But a short description is, 401(+) cubic inch, healthy cam, 9.5:1 Comp ratio, Edelbrock B262 with Edelbrock 750s, full headers and now sporting Telesco Roller tipped rockers. The rockers alone took the car from 11.50et to 11.35et with no other changes. This seems to make quite a statement for the product. I know there has been some dyno testing on these lately with only moderate gains. This car did not have them on for dyno testing but track testing says they work great. Good job Tom on the rockers and helping Buddy get the car going-shouldn't be too long before the car gets into the 11.10-11.00 range at this rate. 10.90s are within site for another normally aspirated Nailhead:TU: ps-Tom, if I have left out some details please fill us in.
Yes, as you have said Joe plus over 2 MPH. The conditions, AIR, less than 29 barometric pressure, were terrible but there was still an improvement over & above what was already done with GOOD air. With better air I'm willing to bet another 2-3 tenths. We had to go with very short pushrods because of V/P clearance issues. The adjusting screws were more than 3 turns down into the adjuster nuts for a gain of only about .080" additional lift. The pistons have already been cut extensively for V/P clearance already, so there's little or no more to cut. Now comes the harder work. P.S. Joe give me a shout at the shop tomorrow if you can, Thanks
I am trying to add some pics of the car from two winters ago, it still had an Offy intake on it-and the front sheet metal. The intake was replaced this past winter with the B262, the nose came off after a brief encounter with the retaining wall at Epping earlier this year. A new nose is in the works. It wouldn't let me upload the pics. I may have posted them last year, and I think you can only post a pic once to save on bandwidth. I'll have to get some newer pics to post.
Tom, just wanted you to know there is a nice write up on the roller rockers in Jafferson Bryant's new Buick Engine Building Book. :TU:
The "J" was featured recently in the "Hop-Up" magazine, issue #9. I'll place a copy of the mag photo's below of the car and the powerplant! You have to remember here, this is 100% "pump-gas compatible" Nailhead! Tom's rockers got the job done here! Quite possibly had they been installed from the very beginning of the project the car would now quite easily be running in the "high-10's" and heading down from there. The rockers simply weren't available at "build-time"!! (Add) Just a tad more "squeeze" (compression) in this "Nail" and it would be in the low(er) 10's without a doubt, and possibly still get by on "straight-93"? Thanks, Gary in N.Y. P.S. The pictures below don't do the actual car true justice, very impressive for sure!
just received the buick engine book by jefferson bryant ... looks like the bible for me european nailhead owner. good highlights on TT products ... thinks i have to order the roller rockers and the aterter some time this year.
