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leftybass209 · 01-30-2014, 01:19 AM

Well i'll try and cover your questions separately and let you fill in the details as they pertain to your application. I failed to read that you wanted them to bolt up to the stock exhaust location. The 73 style manifolds can be had without the hole. You could also do the older style manifolds but you'd have to have the exhaust modified. As far as losing any horsepower with different cast iron manifolds, I highly doubt it. Actually, there would be power to be found if you did a mild porting job, or swapped to 2.5'' manifolds, but again, mounting issues. As far as the headers go, there really isn't any USABLE horsepower or torque to be gained. Good luck!

01-30-2014, 01:19 AM	#5
leftybass209 Registered User Join Date: Feb 2011 Location: Modesto, CA Posts: 2,189	Re: headers on stock pipes? Well i'll try and cover your questions separately and let you fill in the details as they pertain to your application. I failed to read that you wanted them to bolt up to the stock exhaust location. The 73 style manifolds can be had without the hole. You could also do the older style manifolds but you'd have to have the exhaust modified. As far as losing any horsepower with different cast iron manifolds, I highly doubt it. Actually, there would be power to be found if you did a mild porting job, or swapped to 2.5'' manifolds, but again, mounting issues. As far as the headers go, there really isn't any USABLE horsepower or torque to be gained. Good luck!