|
Quote:
|
Very very nice car!! De tune it and drive the wheels off it!!!
|
Quote:
|
Re 460/521
Hi Dave in UK, nice looking ride, I have a Dax with a 545 stroked 460, running a solid roller Comp xr292, similar spec to yours but with less lift, a Victor/1050 dominator, and just changed from a Broader C6 to a TKO 600, I have ported TFS heads and its a wicked drive! give the current setup a chance before you start spending more bucks, rolling road showed 730 Tq, love those BBF's. Dave
|
Kkosche,
Congratulations on a great purchase! That engine package will lay down some serious numbers when it’s tuned. Put a set of Drag radials on it quick!! It will be a scary bastard on those tires ( Goodyear Eagle GTII’s? yikes!!) Yea that cam with a big single plane and a Dominator = less than perfect drivability! Lol But EFI is a great tamer of big cammed street cars, making it is easy to compensate for the weak vacuum signal . $10k should get it done, so long as you don’t get retail gouged. I like the Kinsler SCJ manifold but they are pricey at around $6500(last I checked) http://www.clubcobra.com/photopost/d.../KINSLER_3.jpg and the TWM set up. I just picked up this complete TWM set up with an older Electro-Motive computer for $2K! http://www.clubcobra.com/photopost/d...1297_small.jpg I’m fairly sure I’m going to use the new Holley Dominator EFI controller. Holley Performance Dominator EFI – ECU Products I have a friend that does it for a living and he has nothing but good things to say about it. Very easy user interface, self tuning options, even a hand held tuner if you don’t want to use a laptop Jason |
This is wet dream stuff.Seriously considered the Webers for our car but too many complained of dailing them in and keeping them there.Now this EFI stuff has the looks for sure,but what about filtering the air anything that looks good?
Just had a 1000cfm dbl pmp custom built need to tweak it before thinking about anything else. |
I run a Torker II on my 521 and like it. You can run a 14" air cleaner as mentioned if you use a 1" drop base.
Regarding solid roller cams, I had several failures even after diligently checking the the valves every 250-500 miles. The rollers kept breaking off every 1,000-2,000 miles. I finally switched to a hyd. flat setup and it's got for like 15,000 miles no prob. There are some pretty big hyd. cams out there if you want one... |
Cdog gets his kicks on Route 66!!!!!!!!!!!!!!!!!!!!!
|
Since this article started have done a lot of leg work on the roller tappet issue of failure.Have found that it is isolated most people do not have issues other than an occasional part failure. With that decided to eliminate as much chance of failure as possible that being the needle bearing rollers. The SB2 motor recently finished went with Isky EZ-Roll lifters.This engine will run 680lb open lift.
|
mdross1,
Can't help wondering about solid rollers, bushed or needled. From what I can glean on the 'net (yeah, I know how reliable that can be) it seems idling is the solid roller killer, especially if the lift profile is aggressive from the start. There are cams that have "softer" initial ramps, and cams that use tighter clearances that may help. Spending some phone money talking directly to Isky might save you some pain... Most of the solid rollers I'm aware of are maintenance items; you run them 3000-5000 miles and then have them rebuilt. If you have low total miles to run the car it would seem more like a practical choice. My hydraulic BBF rollers have gone 30K+ miles without the valve covers off. I do agree mine probably sounds tamer than a solid roller would :JEKYLHYDE Tom |
I have a 505 motor with P51 heads that made 830 hp i check valves after 10 -15 quarter mile passes, you would not need to check that often, but i would say around 3500 miles. Kaase makes the best big block head there is and they are very reliable
|
Talked with the Comp cam people about longevity, the cam we have for our SB2 has a .440 lobe which is supposed to be easier on parts. Our car does not get used much now that retired hope to use it a lot more.
Really would like to hear those lifters like only solids make,somehow it speaks volumes as to what might be lurking under the hood. Have a winter to think about it. |
Quote:
As for cams, there are indeed lobes that are easier on the valvetrain than others. A larger major intensity (difference between advertised duration and .050" duration) is generally easier on the parts, and it also helps if you keep lift down. A tight lash cam is also easier. All of my personal toys have solid rollers in them, but I enjoy hitting higher revs. |
Need Verses Want
With 500+ cid, you do not need to go to extreme exotic parts to make power. Getting 600+ lb-ft of torque is not hard. Getting it to breath to 5500 rpm or so is going to make as much Hp as you can hook to the ground in a 2500 lb car.
There is no need to spin this behemoth above 6K. Attempting to do so is where the cost starts escalating rather steeply. You do not need solid roller lifters. You may want them, but you need to understand the difference between a need and a want. It like seeing a good looking ***** and wanting her. After you have her, you wish you had never seen her. |
Nothing wrong with wanting a little more power and a little more rpms. If this were a daily driver, I would have a different opinion, but in all honesty, no one needs more than 250 hp in these cars.
The good news is that: 1. Cobras have gas pedals. You don't have to have them wide open all the time. 2. A larger cam and more rpms usually bleeds the low end power and torque down, which helps the traction issue with a Cobra. |
Quote:
Been running solid roller cams for many years in our Harleys. Always ran the lash much tighter than recommended. Plan to do the same thing with the 385. Actually once the cams and lifters are happy with each other they require very little adjusting. Should add that it has always worked that way for me. I'm one of those who enjoy checking things all the time and look forward to pulling the valve covers when the feel the need strikes. Having these hot rods and comparing notes with like minded enthusiasts has always been one of my favorite past times. You never know what little tricks of the trade you might walk away with. |
| All times are GMT -7. The time now is 05:38 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: