On my buddies 69 Plymouth Road runner with a big block 451 stroker thats in it we ended up using those thick aluminum header gaskets that crush down once torqued down because we tried the conventional MR Gasket header gaskets and they kept leaking even after letting the headers cool down completely then re torquing the bolts again a few times so we decided to try those aluminum header gaskets and they worked great . Not sure if you've worked on many mopar cars but doing headers on even the B body Road runner with a big block putting big tube headers on them are a bitch lol . When we were getting to the point of installing the engine we did it like the factory did on the assembly line where the engine transmission & K mamber were all bolted together and we then lowered the body over the whole engine assembly using the lift and bolted the K member to the under carriage to make it easier but after we got the car in its final stages of being able to start & drive the damn header gaskets started to leak even after re tightening the bolts a few times with no luck of them sealing off like they should. So we ended up pulling the plugs out to make as much room as possible & he bought these aluminum crush headers gaskets that we had to sneak in between the header flanges and the engine block to get the gasket and header lined up to then bolt them to the heads which was a pain in the ass but got it done & after 3+ years now no leaking header gaskets using these other style header gaskets which i think they are called dead blow aluminum header gaskets but i don't remember what brand they are . If i remember they also make them in thick copper as well so as long as the header flanges are straight and flat & the heads exhaust flanges are flat they seal very good . If i remember the headers on this Plymouth are Hookers as well who usually make some good headers but who knows now with just about everything being out sourced to Chinesesium land that can fuck up a wet dream lol . My buddy and me are working on a 67 Mercury Cougar that is a rust free body & turned it into a fast back being he's a really good body guy who taught auto bod clssses at the university of Eau Claire Wisconsin for a number of years but instead of running a Ferd engine we decided to put a Chevrolet 5.3 LS in it just to piss the Ferd guys off & he bought s set of stainless steel headers for it off of eBay and they fit really nice with no issues of hitting anything so we fabbed the reast of the exhaust using 3 inch stainless tube and used 2 chamber race mufflers with all the jionts welded onece everything we lined up to make sure nothing will be touching anything . The rear valance he cut holes on both sides so the exhaust tips go through these holes that he made stainless steel trim rings that attach to the holes for the exhaust tips to go through to make it look cleaner. We updated the front suspension to rack and pinion steeing and its all independent up front so the original shock towers were removed to do this plus the rear was updated as well & it now has 4 wheel disc brakes all around now . Right now the engine is stock other than the headers but he built this car so it can be driven like a modern car can & gets decent mileage because the Road Runner gets about 5 miles to the gallon and its fun to drive because we updated the suspension and put 4 wheel disc brakes on it but with 3:90 gears and the 727 with a 3,000 flash converter in it & a 800 cfm Demon double pump carb jetted fkr the engine on the dyno after i bult the engine it sucks gas like a pig so it doesn't get driven often but it sure hauls ass when needed lol .
Goddamn, thanks for watching and commenting buddy! I have those header gaskets you mentioned on my Chevelle and they work awesome, I'm sure I'll end up buying another set to keep the leaks at bay!
On my buddies 69 Plymouth Road runner with a big block 451 stroker thats in it we ended up using those thick aluminum header gaskets that crush down once torqued down because we tried the conventional MR Gasket header gaskets and they kept leaking even after letting the headers cool down completely then re torquing the bolts again a few times so we decided to try those aluminum header gaskets and they worked great . Not sure if you've worked on many mopar cars but doing headers on even the B body Road runner with a big block putting big tube headers on them are a bitch lol . When we were getting to the point of installing the engine we did it like the factory did on the assembly line where the engine transmission & K mamber were all bolted together and we then lowered the body over the whole engine assembly using the lift and bolted the K member to the under carriage to make it easier but after we got the car in its final stages of being able to start & drive the damn header gaskets started to leak even after re tightening the bolts a few times with no luck of them sealing off like they should. So we ended up pulling the plugs out to make as much room as possible & he bought these aluminum crush headers gaskets that we had to sneak in between the header flanges and the engine block to get the gasket and header lined up to then bolt them to the heads which was a pain in the ass but got it done & after 3+ years now no leaking header gaskets using these other style header gaskets which i think they are called dead blow aluminum header gaskets but i don't remember what brand they are . If i remember they also make them in thick copper as well so as long as the header flanges are straight and flat & the heads exhaust flanges are flat they seal very good . If i remember the headers on this Plymouth are Hookers as well who usually make some good headers but who knows now with just about everything being out sourced to Chinesesium land that can fuck up a wet dream lol . My buddy and me are working on a 67 Mercury Cougar that is a rust free body & turned it into a fast back being he's a really good body guy who taught auto bod clssses at the university of Eau Claire Wisconsin for a number of years but instead of running a Ferd engine we decided to put a Chevrolet 5.3 LS in it just to piss the Ferd guys off & he bought s set of stainless steel headers for it off of eBay and they fit really nice with no issues of hitting anything so we fabbed the reast of the exhaust using 3 inch stainless tube and used 2 chamber race mufflers with all the jionts welded onece everything we lined up to make sure nothing will be touching anything . The rear valance he cut holes on both sides so the exhaust tips go through these holes that he made stainless steel trim rings that attach to the holes for the exhaust tips to go through to make it look cleaner. We updated the front suspension to rack and pinion steeing and its all independent up front so the original shock towers were removed to do this plus the rear was updated as well & it now has 4 wheel disc brakes all around now . Right now the engine is stock other than the headers but he built this car so it can be driven like a modern car can & gets decent mileage because the Road Runner gets about 5 miles to the gallon and its fun to drive because we updated the suspension and put 4 wheel disc brakes on it but with 3:90 gears and the 727 with a 3,000 flash converter in it & a 800 cfm Demon double pump carb jetted fkr the engine on the dyno after i bult the engine it sucks gas like a pig so it doesn't get driven often but it sure hauls ass when needed lol .
Goddamn, thanks for watching and commenting buddy! I have those header gaskets you mentioned on my Chevelle and they work awesome, I'm sure I'll end up buying another set to keep the leaks at bay!
Big man these old trucks will get on your last nerve and they will nickel and dime you to death take care