Radim Posted January 30, 2011 Report Share Posted January 30, 2011 It's a Gemini Header 4-1 Design, round port. Curious to know if it would fit my 620? I can't test fit it cause i have a square port head. I also have a spare square-port closed chamber head if anyone is interested in a trade for a round port locally. I know you can use a Square Port header on Round/Square port head but not vice versa. Thanks guys! Quote Link to comment
motavated Posted January 30, 2011 Report Share Posted January 30, 2011 I think this be the 1980 720 4x4 header. I might make it fit but I dont know.... Its is a l20b header for sure. Quote Link to comment
motavated Posted January 30, 2011 Report Share Posted January 30, 2011 Btw I have a closed chambered circle head if you want to trade... In other words I got the head for that header.... Quote Link to comment
Radim Posted January 30, 2011 Author Report Share Posted January 30, 2011 I'm down for the trade, is it complete? Quote Link to comment
datzenmike Posted January 30, 2011 Report Share Posted January 30, 2011 I think this be the 1980 720 4x4 header. I might make it fit but I dont know.... Its is a l20b header for sure. Really hard to tell from a picture. Round ports were on car and trucks with L motors from '78 on. Quote Link to comment
Radim Posted January 30, 2011 Author Report Share Posted January 30, 2011 Cool Thanks Mike, what will have to be done to make it fit if it is a 720 4x4 or a car header? Quote Link to comment
datzenmike Posted January 30, 2011 Report Share Posted January 30, 2011 You have the '73 with L16? The round port will be longer for the 'taller' L20b motor and will sit lower on the truck. I've no idea if it's for a truck, 4x4 or otherwise. If for a car it almost certainly won't clear the torsion bars. Best bet is to test fit. Quote Link to comment
Jester Posted January 30, 2011 Report Share Posted January 30, 2011 You could alway bolt it in just to check the fit. No sense trading off your head if it wont work on your truck. Quote Link to comment
Radim Posted January 30, 2011 Author Report Share Posted January 30, 2011 Well it's definetly an L-Series header and i'm pretty sure i saw another one at the shop if anyone is interested. I'll test fit it when i have some spare time.. thanks guys! Quote Link to comment
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