[KingLT1]

Originally Posted by FL2018-1SS

Expect limited traction with the square tires, 8.5" rims, and all season rubber. It's the same thing Dodge has been doing with their scatpack - 485hp 6.4L v8 and they slap it with 245 all season tires. No traction off the line. You'll have to budget probably 2k for a new set of tires and wheels and that puts you right back close to the SS in terms of price.

Depending on tire manufacturer, You can put a 275 on a 8.5". Yes it's not recommended by Tire spec ratings, but it works fine and has been done thousands of times. Nittos tend to run a little smaller from my experience so you can run 275's on a 8.5 and 305's on a 9.5" no problem with very little bulge. So no you don't NEED to spend 2k for wheels and tires.

[MackSteelPrivateEye]

Originally Posted by RealG

FORD the overhead cam king just released their brand new 7.3 V8 and its overhead valve they went back to pushrods.

DOHC, makes no sense for a muscle type car unless you gotta have high RPMs and can sacrifice low end torque. Most want low end grunt.

[Martinjlm]

Originally Posted by MackSteelPrivateEye

DOHC, makes no sense for a muscle type car unless you gotta have high RPMs and can sacrifice low end torque. Most want low end grunt.

I clearly understand what you’re saying. Then I look at Mustang GT sales vs Camaro SS sales. Buying decisions will, of course, take into account a number of elements beyond hp and torque, but Ford ain’t hurtin’ standing behind a DOHC V8 in the Mustang. They’re outselling the two cars (Camaro and Challenger) that have the low end grunt.

[KMPrenger]

Low end grunt is fun for punching around town and on the street, but on the track (strip or turns) it doesn't matter. High rpms is where it's at.

So while I'd take the LT1 over the 5.0 (naturally aspirated), there is no doubt the fact that the 5.0 sings a bit better in the high rpms helps it in certain scenarios.

[396ssrat]

Originally Posted by KMPrenger

Low end grunt is fun for punching around town and on the street, but on the track (strip or turns) it doesn't matter. High rpms is where it's at.

So while I'd take the LT1 over the 5.0 (naturally aspirated), there is no doubt the fact that the 5.0 sings a bit better in the high rpms helps it in certain scenarios.

Depends on the weight of the vehicle. RPM's will win races if you have enough distance to make it useful.

[396ssrat]

Originally Posted by KMPrenger

Low end grunt is fun for punching around town and on the street, but on the track (strip or turns) it doesn't matter. High rpms is where it's at.

So while I'd take the LT1 over the 5.0 (naturally aspirated), there is no doubt the fact that the 5.0 sings a bit better in the high rpms helps it in certain scenarios.

Depends on the weight of the vehicle. RPM's will win races if you have enough distance to make it useful. Let's rephrase that. if you have two vehicles that turn 7500 rpm's and both make 800hp but one only makes 600lbft and the other makes 700lbft which do you think will finish first?

[cellsafemode]

they make that hp and torque over what rpm range? and what rpm range is this race going to cover?

The car that will win (assuming traction and all else is equal) will be the one that makes the most torque (assuming it can keep the wheels from breaking loose doing it) in the rpm range that the car spends the majority of time in over the course of the race. You can convert that statement to hp, but hp is just calculated from torque measurements so ...

edit: though, not sure why anyone would be fighting a dohv v8 option...going to a dual camshaft design with hopefully 4 valves per cylinder would net you more power simply by having the ability to flow more gas in the same volume engine, make the components more capable of supporting that power since you dont need long pushrods and usually ends up being able to operate at any given power level more efficiently than a single cam two valve setup. The added cost is probably already being created in the current LT1 by having to implement VVT and other things with just a single cam that a dual overhead cam can do more simply. So the negatives aren't nearly as impactful as they would be when you're making the comparison with yesteryear's LS based v8's.

[Rock-It Man]

Originally Posted by MackSteelPrivateEye

DOHC, makes no sense for a muscle type car unless you gotta have high RPMs and can sacrifice low end torque. Most want low end grunt.

With DOHC, you can vary intake and exhaust valve timing separately, and achieve both low and high end torque.

With a single cam, not so much.

The only advantages of pushrod engines are smaller package size and lower cost.

[Memphis SS]

Originally Posted by Rock-It Man

With DOHC, you can vary intake and exhaust valve timing separately, and achieve both low and high end torque.

With a single cam, not so much.

The only advantages of pushrod engines are smaller package size and lower cost.

Show me a dual overhead cam motor in production that has the HP and TQ with as flat of a TQ curve as the LT1.. I haven’t seen one, not disagreeing but most seem to be a much higher RPM range to get HP with a lower TQ like the mustang GT.

[Gunkk]

Originally Posted by Rock-It Man

The only advantages of pushrod engines are smaller package size and lower cost.

...add to that lower weight and lower center of mass...

DOHC ain’t all that. I’ll take a Koenigsegg Freevalve over all of this pleaseandthanks.

[hotlap]

Camless would be the ultimate. Infinitely variable, no mechanical loss, lightweight.

https://www.motortrend.com/news/is-t...-single-greybg

[lt4camaro]

Originally Posted by FL2018-1SS

Expect limited traction with the square tires, 8.5" rims, and all season rubber. It's the same thing Dodge has been doing with their scatpack - 485hp 6.4L v8 and they slap it with 245 all season tires. No traction off the line. You'll have to budget probably 2k for a new set of tires and wheels and that puts you right back close to the SS in terms of price.

Why spread such B/S, I got a 2.0 60 ft time with my stock 2016 V6 manual on the 18 inch all season tires, and a 1.9 60 ft on the stock michelin tires on my stock manual 2015 stingray. The 20 inch tires will be ample to launch on if you know how. Also all you need to do is buy 20 inch drag radials and put them on the factory wheels for $600

[KingLT1]

Originally Posted by Rock-It Man

The only advantages of pushrod engines are smaller package size and lower cost.

Less weight and easier to wrench on with a lower cost to maintain. DOHC stuff isn't what the average shade tree mechanic is going to want to work on.

[IOMike]

Originally Posted by lt4camaro

Why spread such B/S, I got a 2.0 60 ft time with my stock 2016 V6 manual on the 18 inch all season tires, and a 1.9 60 ft on the stock michelin tires on my stock manual 2015 stingray. The 20 inch tires will be ample to launch on if you know how. Also all you need to do is buy 20 inch drag radials and put them on the factory wheels for $600

The narrower the tire the more pressure on that tire. Wider tires are not as beneficial as some think. In theory it's a wash, but in reality they do provide some increase in traction (talking only about acceleration). Tire design/compound is far more important than an extra inch of width.