Reverse flow cooling in an 87?
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From: Athens AL
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Re: Reverse flow cooling in an 87? (amswak)
why would you want to do that?
gotta worry about how the coolant goes thru the heads when you do that, remember the LT1's heads are different because of this and wont work on an earlier SBC as just a bolt-on
gotta worry about how the coolant goes thru the heads when you do that, remember the LT1's heads are different because of this and wont work on an earlier SBC as just a bolt-on
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Joined: Jun 2002
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From: Winnetka CA
Re: Reverse flow cooling in an 87? (vader86)
From what I am told if the heads are cooled first the compression ratio can be higher than 10.5 without burning up the engine. Can the heads be switched out with other heads, maybe LT1s (I dont know if LT1s are reverse flow, just using it as an example)
[Modified by amswak, 4:00 PM 10/24/2003]
[Modified by amswak, 4:00 PM 10/24/2003]
Team Owner
Joined: Sep 2001
Posts: 62,143
Likes: 1,729
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Reverse flow cooling in an 87? (amswak)
From what I am told if the heads are cooled first the compression ratio can be higher than 10.5 without burning up the engine. Can the heads be switched out with other heads, maybe LT1s (I dont know if LT1s are reverse flow, just using it as an example)
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From: Cincinnati, Oh USA
Re: Reverse flow cooling in an 87? (amswak)
The reverse coolant flow in LT-1's comes from the waterpump design, not the connection of the hoses! You cannot reverse the coolant flow in an L98 because the waterpump is designed with it's outlet into the block and the coolant flows into the block and out the heads. Reverse flow must not have been very effective since Corvette doesn't use it anymore.
Drifting
Joined: Mar 1999
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From: Greensboro NC
Re: Reverse flow cooling in an 87? (amswak)
NOPE.........LS1 engines have the thermostat on the inlet side just like the LT engines, but they are not reverse flow.
you mean the LS1 is not reverse flow?
Drifting
Joined: Mar 1999
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From: Greensboro NC
Re: Reverse flow cooling in an 87? (jfb)
It's not jsut the waterpump design. The entire engine block is different. It has four water openings in the front. The two top ones (smaller) route the coolant coming from the thermostat and the pump through block passages to the heads from where it goes back down into the block and then it exits from the block via the two bottom holes in the block (larger holes) back into the waterpump and through internal passages to the upper radiator hose. This cannot be duplicated in the Gen I SBC.
The reverse coolant flow in LT-1's comes from the waterpump design, not the connection of the hoses! You cannot reverse the coolant flow in an L98 because the waterpump is designed with it's outlet into the block and the coolant flows into the block and out the heads. Reverse flow must not have been very effective since Corvette doesn't use it anymore.
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Re: Reverse flow cooling in an 87? (amswak)
If memory serves me right,LPE built 383's Super Ram L98 motors with 11.0-11.5 compression and it ran on pump gas.Crucial selection of parts and a good cooling system should be the ticket.
:)
:)
