[k20nutz]

i have 2 projects going they are both custom. the first one is my olds 425 going in a 92 c1500 (my daily driver). my next is a pulling truck its an 87 k20 with a 454 (not built yet). i want to destroke that to a 427.

[Henry Highrise]

Welcome to Hotrodders.

[speedydeedy]

Welcome. Why would you want to make a 454 into a 427?

[Job~Rated]

Welcome!

[k20nutz]

Originally Posted by speedydeedy

Welcome. Why would you want to make a 454 into a 427?

i want to beable to pull some high rpms

[k20nutz]

thanks all you guys

[Chevrolet4x4s]

Welcome to Hotrodders 454s will rev hard too when built right.

Shane

[lets cut it up]

Welcome I say build it bigger instead. 496 sounds so much better

[k20nutz]

Originally Posted by lets cut it up

Welcome I say build it bigger instead. 496 sounds so much better

i want to spin high rpm but it does sound better

[Chevrolet4x4s]

What are you planing on putting it in and how high do you plan to spin it?

Shane

[Blazin72]

Originally Posted by k20nutz

i want to spin high rpm but it does sound better

Shorter strokes shouldn't be the only consideration for building a high(er) rpm engine. For most people, valvetrain upgrades and increased airflow capacity will yeild higher overall rpm capability.

A couple examples:
The 427 inch LS7 has a 4.00" stroke and has a redline of 7100 rpm
the Ford GT 5.4L has a 4.165" stroke and has a redline of 6500 rpm

Both of these engines have relatively long strokes compared to their overall displacement.

As another example, a buddy of mine races a 65 Nova with a 468" BBC. It runs 9.60s in the 1/4 and crosses the line at 7100 rpm.

Just something to think about.
Good Luck