Crower Cams on a Daily Driver

[luckymick]

Hey hows its going everyone? Quick question; right now my daytona is my dd but i still want to bring it to the track. Since i am in the process of of fixing it up(repairing rust damage, new mounts, suspension, valve stem seals, switching to rear discs, ect.) and doing the common bolt ons(pnp intake, 52mm tb, CAI,and intake spacers) I was thinking about sending my extra cams to crower.But i was wondering if it is worth it on a dd. Also here is a stupid question, while looking into cams i read somewhere that the cams turned the engine to a interference, if I remember correctly i thought that was if you also use 10:1 pistons I am right or did i get something mixed up?

Thanks for your time and input,

Brian

[menace2society]

Quote:

Originally Posted by luckymick Hey hows its going everyone? Quick question; right now my daytona is my dd but i still want to bring it to the track. Since i am in the process of of fixing it up(repairing rust damage, new mounts, suspension, valve stem seals, switching to rear discs, ect.) and doing the common bolt ons(pnp intake, 52mm tb, CAI,and intake spacers) I was thinking about sending my extra cams to crower.But i was wondering if it is worth it on a dd. Also here is a stupid question, while looking into cams i read somewhere that the cams turned the engine to a interference, if I remember correctly i thought that was if you also use 10:1 pistons I am right or did i get something mixed up? Thanks for your time and input, Brian

Like you said, the 10:1 pistons turn the engine into a interference engine not the cams. The Crower regrinds are going to set you back around $200. I would not suggest doing that unless, you had a 2.5" exhaust, 52mm or 58mm TB and a ported plenum. Otherwise, I don't see the point doing the reground cams on a daily driver.

However, the sohc diamante cams would be a good upgrade if you only want to use the car strictlty as a daily driver but, that only really works with the 5sp manual.

[luckymick]

Quote:

Originally Posted by menace2society I would not suggest doing that unless, you had a 2.5" exhaust, 52mm or 58mm TB and a ported plenum. Otherwise, I don't see the point doing the reground cams on a daily driver. However, the sohc diamante cams would be a good upgrade if you only want to use the car strictlty as a daily driver but, that only really works with the 5sp manual.

I already have 2.5" exhaust, and everything else is sitting in my garage waiting to get put on. Eventually i would like the daytona to be a weekend/strip car. I was thinking about diamante cams but right now i am using the A604. Thanks for the input menace i appreciate it.

[Reaper1]

Why would cams only work on a 5-speed car? That makes absolutly NO sense. Additional power is additional power, regardless of the transmission.

Before somebody says the power will kill the tranny...NO IT WON'T!!! A poorly built tranny, a poorly taken care of tranny, an overly stressed tranny...THOSE are killers. The A604 can take a LOT of power, more than a bolt-on 3.0 will make for sure.

[luckymick]

Quote:

Originally Posted by Reaper1 Before somebody says the power will kill the tranny...NO IT WON'T!!! A poorly built tranny, a poorly taken care of tranny, an overly stressed tranny...THOSE are killers. The A604 can take a LOT of power, more than a bolt-on 3.0 will make for sure.

LOL, i was waiting for the same thing, and i had a feeling you and a few others would stick up for my trans of choice

[menace2society]

Quote:

Originally Posted by Reaper1 Why would cams only work on a 5-speed car? That makes absolutly NO sense. Additional power is additional power, regardless of the transmission. Before somebody says the power will kill the tranny...NO IT WON'T!!! A poorly built tranny, a poorly taken care of tranny, an overly stressed tranny...THOSE are killers. The A604 can take a LOT of power, more than a bolt-on 3.0 will make for sure.

I said that because, I was talking about the DIAMANTE CAMS. The 5sp computer allows a 6200 rev limiter so you can make the diamante cams work more in your favor..... Murphy has the a670 and has gotten the diamante cams to work in his favor because he adjusted the rods.

[4Daytonas]

Quote:

Originally Posted by Reaper1 Why would cams only work on a 5-speed car? That makes absolutly NO sense. Additional power is additional power, regardless of the transmission. Before somebody says the power will kill the tranny...NO IT WON'T!!! A poorly built tranny, a poorly taken care of tranny, an overly stressed tranny...THOSE are killers. The A604 can take a LOT of power, more than a bolt-on 3.0 will make for sure.

Generally speaking a bigger than stock cam will reduce low end torque and add power at higher RPMs.A big cam in an automatic will work,but low speed or breakaway acceleration will suffer.If you advance the cam it will help then it loses top end so what's the point?.To make good use of a bigger cam you need a higher stall convertor.A manual trans can rev the engine to cover the loss of low end torque.

[mopar3.0]

thoes cams dont change the low end power,
if you think so you need a run in my car lol

[4Daytonas]

Quote:

Originally Posted by mopar3.0 thoes cams dont change the low end power, if you think so you need a run in my car lol

Re read my post--I said generally.If the cams don't reduce your low end then good for you.Your cams are so little You've paid out a bunch of $ for very little improvement.

[Ondonti]

The cam's are stock lift with 28 degrees more duration then stock.

The car is so undercam'd that torque does not disappear.

[55trucker]

I'm pondering this cam change as well as I have a spare pair of cams sitting about......so, if one just has the cams reground to increase the lobe lift to a safe value that won't induce spring bind, but add no more duration, then the torque value should go up (increasing the bottom end torque/mid range torque, which is what I am looking for) but not adding or taking away anything from the current values at the top end?.

[c2xejk]

Just to repeat what Brent said, the stock cam is pretty mild... The extra duration is not going to negatively impact the low-end torque... The torque curve is generally "flat" over an RPM range. With the more aggressive cam you are moving the flat section of the torque curve up in the RPM band.

Since stock the torque curve starts so low, you don't notice a change at low-RPM. However, you do see a gain in peak hp because the torque curve dies off at a higher RPM. ( hp = (tq * RPM)/5252 )

As for coil bind, I don't think that is an issue, I believe the valve spring retainer will hit the guide seal before you have coil bind...

[55trucker]

Something that I have to consider here where I live..is the tight emission regulations that are in place (it's worse here in Ontario than in California)...that is the major reason why I am shying away from an increase in duration that may throw off the emissions that the engine has to meet. But if an increase in torque can be had, that would all be most welcome.