# Engine guys... check this GSR block deck out:

**URL:** <https://forums.speedlife.net/t/engine-guys-check-this-gsr-block-deck-out/203397>\
**Category:** PittSpeed Automotive\
**Created:** [August 7, 2009, 7:19am UTC](https://forums.speedlife.net/t/engine-guys-check-this-gsr-block-deck-out/203397 "2009-08-07T07:19:19Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\
**Post date:** [August 8, 2009, 9:16am UTC](https://forums.speedlife.net/t/engine-guys-check-this-gsr-block-deck-out/203397/7 "2009-08-08T09:16:37Z")

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> [@hockey question](https://forums.speedlife.net/t/hockey-question/40787/8):
>
> i’ve seen it before. i think severe overheating causes it, with the different rate of expansion of the steel and aluminum

i have seen it befor as well, and rusty you are correct. Thats why the previous head gasket nuked, and you will continue have sealing issues untill its decked. Ask Denny he prob would know if its safe to use under boost. I would try to find another block or get the customer to spring for sleeves! … ill buy that block if you dont use it … 🙂

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