545 stroker crank question

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Jul 6, 2010 | 09:39 PM

#11

USMCrebel

Mach I Section Moderator

Joined: Mar 2007

Posts: 7,140

From: round abouts these parts

Quote:

Originally Posted by 67mustang302

I know a lightweight forged setup is expensive. But the weight isn't just important for high rpm. It takes power to accelerate mass because of rotating inertia. The lighter the mass of the rotating assembly, the faster the rpms will come up, IE the faster the car will accelerate. Whether you turn 5,500rpm or 10,500rpm, a lighter assembly will let the engine rev up faster. Less power consumed to accelerate engine parts = more power available to accelerate the car.

while this is true i don't think acceleration i an issue when you have well over 700rwtq available from like 2000rpm or something stupid like that

Jul 7, 2010 | 01:22 AM

#12

67mustang302

6th Gear Member

Joined: Apr 2007

Posts: 10,468

From: California

Quote:

Originally Posted by USMCrebel

while this is true i don't think acceleration i an issue when you have well over 700rwtq available from like 2000rpm or something stupid like that

Haha, I suppose that's true. The money saved by using basic components may be better spent on suspension/tires.

Jul 7, 2010 | 08:24 AM

#13

USMCrebel

Mach I Section Moderator

Joined: Mar 2007

Posts: 7,140

From: round abouts these parts

Quote:

Originally Posted by 67mustang302

Haha, I suppose that's true. The money saved by using basic components may be better spent on suspension/tires.

my thoughts exactly

Jul 9, 2010 | 05:06 PM

#14

Dub9Stang

Thread Starter

1st Gear Member

Joined: Apr 2010

Posts: 127

From: Chicago Illinois

well i was looking into one of these kits

http://www.rpmmachine.com/scat-strok...545-750hp.html

it was either lightweight or forged
then either flattop or dish top.

I would just enjoy the 13.7:1 compression with the flattop lol but im thinking dish..

Jul 10, 2010 | 03:07 AM

#15

67mustang302

6th Gear Member

Joined: Apr 2007

Posts: 10,468

From: California

13.7 is definitely race gas only. And I've never seen a "lightweight" bottom end that wasn't forged. They generally have to be because to get light weight they remove material from places, and you need the stronger forged so it holds together. That said, stock cast steel cranks are actually remarkably light and strong.