# LT1 ?'s

**URL:** https://forums.speedlife.net/t/lt1-s/8303
**Category:** NYSpeed Automotive
**Created:** [February 17, 2006, 10:10pm UTC](https://forums.speedlife.net/t/lt1-s/8303 "2006-02-17T22:10:52Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![h8750](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/h8750/32/7372_2.png) [@h8750](https://forums.speedlife.net/u/h8750)
#### Post date: [February 17, 2006, 10:10pm UTC](https://forums.speedlife.net/t/lt1-s/8303/1 "2006-02-17T22:10:52Z")

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should the degas(overflow) bottle have a vent?

there are 2 lines, one to tb and where does the other go???

it was capped, the car was having issues, I made it a vent and made 2 other changes and it went from running 250-260 to running about 130 LOL

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### Author: ![BaD\_AZz\_Z\_28](https://avatars.discourse-cdn.com/v4/letter/b/f04885/32.png) [@BaD\_AZz\_Z\_28](https://forums.speedlife.net/u/BaD_AZz_Z_28)
#### Post date: [February 17, 2006, 11:20pm UTC](https://forums.speedlife.net/t/lt1-s/8303/2 "2006-02-17T23:20:09Z")

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LT1 coolant overflow? IT should have 1 line, to the top of the radiator…?

And the coolant line to the throttle body can be bypassed…

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### Author: ![rj-92](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rj-92/32/7310_2.png) [@rj-92](https://forums.speedlife.net/u/rj-92)
#### Post date: [February 18, 2006, 7:36am UTC](https://forums.speedlife.net/t/lt1-s/8303/3 "2006-02-18T07:36:19Z")

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STFU Mark ,what do you know about LT1s??? m 😛

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### Author: ![h8750](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/h8750/32/7372_2.png) [@h8750](https://forums.speedlife.net/u/h8750)
#### Post date: [February 18, 2006, 12:17pm UTC](https://forums.speedlife.net/t/lt1-s/8303/4 "2006-02-18T12:17:13Z")

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there are 2 lines, 95 impala ss

dont you need to delete the egr and block the heat riser to do the coolant bypass effectively?

even w/one line, isn’t there a vent incase it boils over and to exchange air, but w/ a seal or check valve to maintain 15psi in the system?

it did have a huge air pocket in it and the I had to use channel locks to get the cap off the degas bottle, I thought the neck was gonna snap off it was so tight

its a fresh spunger motor :tup: its pretty strong now that I’ve straightened out a few issues, it was installed by someone else, not paul or me

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### Author: ![97FormulaWS-6](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/97formulaws-6/32/7384_2.png) [@97FormulaWS-6](https://forums.speedlife.net/u/97FormulaWS-6)
#### Post date: [February 18, 2006, 12:37pm UTC](https://forums.speedlife.net/t/lt1-s/8303/5 "2006-02-18T12:37:01Z")

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Nope, the TB bypass just removes the coolent from the TB; don’t have to do anything else.