Lsx-dr heads

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Jan 4, 2011 | 12:03 PM

bigdog

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From: sugarland,texas

Lsx-dr heads

building big bore street motor on nitrous.pro's and con's of using lsx-dr heads.are they capable of being use on a street motor.
building 450ci or bigger motor.

Apr 17, 2020 | 03:53 PM

cookseyb

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From: Central Texas

Send the LS2 to Texas Speed and they can install Darton sleeves and make you pretty much any size engine you might want

Apr 17, 2020 | 04:22 PM

95sscamaro

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From: Cartersville GA

I’m having LME put together a 440, went with the Frankenstein F710 heads. Might want to look at those.

Apr 17, 2020 | 04:53 PM

Darth_V8r

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F710 heads were not around in 2011

Apr 17, 2020 | 05:00 PM

Che70velle

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From: Dawsonville Ga.

Quote:

Originally Posted by bigdog

building big bore street motor on nitrous.pro's and con's of using lsx-dr heads.are they capable of being use on a street motor.
building 450ci or bigger motor.

The heads require a specific intake manifold and a unique header. They are not like a typical LS engine in that regard. Also require a specific shaft rocker setup. Combustion chambers are 50cc, which is very small...great for high compression. Not pump gas numbers, unless your going with a dish piston. Intake ports are 313cc, which are huge. Would be lazy on a street engine. The DR heads are designed to be a drag race only (hence the DR designation) cylinder head, that live up above 7k rpm. They are very capable of making incredible power in a high rpm setup.
Having said all of that, I wouldn’t consider running a set on the street.