I finally sold my '66 GTO clone and bought something cooler....'54 Pontiac. I was thinking of running a split exhaust on the old straight 8 into Lakes pipes along the rockers. What will a straight pipe on a split 8 inline sound like? It needs a new head pipe so: A. I could split the manifold and run true dual exhaust....lotsa work B. I could fab up a 'Y' pipe to run the pipes like a modern dual exhaust...still some work but doable C. I could fab up a single head pipe and have one side a dummy pipe and run the p***enger. Seems easy enough! Is it really worth all the h***le to split a manifold on an inline 8 that is otherwise bone stock? I did find a used dual carb Edmunds intake for the Pontiac 8 at a swap last week.....not as rare as I thought they'd be....$595.00.
There was a guy running a 50 or so Buick at Bonneville with a straight 8. It was a street legal, registered race car and sounded sooo cool. I never got to see his engine, but splitting the manifold should sound great.
I would say split the manifold and use BOTH lake pipes anyway you do it. Dont want to be accused of posing with one pipe hooked up do you?
"I finally sold my '66 GTO clone and bought something cooler....'54 Pontiac. " yes.....it sounds like a **** idea....but now that you've done it, make 2 exhaust manifolds.
I have a '47 Pontiac Streamliner 8 with Edmunds 2x2 intake with 2 stock WCD's, a milled factory Hi.Comp. head, and had the stock exhaust split with the center baffle filled in. It goes into 2-2" pipes, 80" lakes pipes and through 12" gl***packs and through the rear bumper. With the lakers capped it sounds like a V8 and with them open is loud and rappy when I stomp it, no tickets yet. The work was all done by Johnny Franklin's Mufflers in Santa Rosa, Ca. The exhaust manifold work was only $120 after I R&R'd it. I drove it back for the rest of the work with the header open , that really sounded cool!! I thought of putting cutouts on it with cables but the lakes caps are real easy unless I get busted, hard to explain that one to even the stupidest cop. Good luck with the exhaust and remember to keep your heads flat, your pipes open and your ride low.