|
302" Redline
Fellas
what's the recommended max rpm my stock 302 HO should be pushed to? Thanks |
5500-6000?
|
geez, that was quick.......thanks Merv. I get all sorts of answers on Ford websites!
Ray tells me my paperwork is due this week, so hopefully an appointment with Qld Trans is imminent G |
Rev it until the valves float then back off just a touch.
|
Well done Greg. U will be fine I'm sure. The rev limit on stock depends on timing and fuel delivery and caution.
|
Quote:
|
valve bounce is a horid sound---Mic
|
And that is why I said to back it off just a tad.
|
Quote:
With new stock springs and lifters, it will safely run to 5,800. That's about the where valve float will start; but you probably won't feel it until around 6,000. If you have a stock cam, it stops making power well below that, like around 5,200. So your shift poiint should be right around 5,000 with a stock cam. |
If it's a stock 5.0, then the cam won't let it rev very high at all. You should peak at around 4800-5000. No sense in spinning it a lot higher than you need to.
You can change the heads and cam and then feel free to spin her up higher. |
Two different criteria
My carbed 302 is about 410 HP. It will easily run to 7,000 rpm, but the bottom end is stock so I keep it to 6,000 rpm. I know it only has a 3" stroke and should be OK above 6,000, but I want it to live. So, having said all that, I think there are two criteria for redline. 1) The highest rpm with the ability to produce power based on the top end design, and 2) The maximum safe rpm in keeping with with the ability of the engine's bottom end to hold together.
In my case, #1 exceedes #2, so I hold it to 6,000 rpm. . |
Quote:
Very well said. With a stock 5.0 camshaft and cylinder heads, you won't make power very high, so there's no use in spinning it up. A stock 302 bottom end will take quite a bit of punishment, but there's no need in putting it through that unnecessarily. |
the over rev situation that comes into play on a sporty type car is on downshifts
|
High rpm downshifts can be very hard on the rods. It tends to want to pull the cap off the bottom of the rod :eek:. When you are on the gas, you are compressing the body of the rod against the crank, . . exactly what it was made for.
. |
Thanks for all the replies, I guessed there'd be no straight answer.....you blokes crack me up :LOL:
|
| All times are GMT -7. The time now is 09:14 AM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, 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: