Header gasket leak
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http://catalog.remflex.com/CHEVROLET...ket_p/2042.htm
If they don't you have a warped flange..
http://catalog.remflex.com/CHEVROLET...ket_p/2042.htm
If they don't you have a warped flange..
The 1470 is for LT1/4 "D" port heads. The 1406 are Gen 1 SBC D port...I have always used the 1470's on my LT1.
https://www.summitracing.com/parts/FEL-1470/
I have never had any luck with copper gaskets and never used the Remflex so can't speak one way or the other about them. Atlanta has been around the block so if he feels they are good they should be. With that said I use the FelPro 1470...but any gasket is not going to work if the flange is warped/ Holding a straight edge on the flange and running a flashlight behind the straight edge to see if the mating point of the straight edge on flange reveals low spots is something you might want to do if the header can come off enough to allow you to check that.
If you are having someone install these than you should re-tighten them after a couple of heat cycles. I use the box wrench with another box wrench wedged on it to add leverage.
The 1470 is for LT1/4 "D" port heads. The 1406 are Gen 1 SBC D port...I have always used the 1470's on my LT1.
https://www.summitracing.com/parts/FEL-1470/
I have never had any luck with copper gaskets and never used the Remflex so can't speak one way or the other about them. Atlanta has been around the block so if he feels they are good they should be. With that said I use the FelPro 1470...but any gasket is not going to work if the flange is warped/ Holding a straight edge on the flange and running a flashlight behind the straight edge to see if the mating point of the straight edge on flange reveals low spots is something you might want to do if the header can come off enough to allow you to check that.
If you are having someone install these than you should re-tighten them after a couple of heat cycles. I use the box wrench with another box wrench wedged on it to add leverage.
Hi Jon,
Thank you for your interest in Remflex Exhaust Gaskets. You can find out which of the parts is right for you using the port dimensions--the 2022 is 1-7/16" x 1-3/8", as opposed to the 2042, at 1-7/16" x 1-7/16".
Regards,
Rebecca“











