Looking for some lightweight SBC exhaust that will not break the bank and still perform good with 420ish hp.

ANy suggestions?

Revolution Marine. -- Works Awsome! I have used them three times on small block boat projects. I usually gain between 200 and 400 rpm, and they are a heck of a lot lighter.

Chris

Stainless Marine
Very light, great warranty (havent had an issue but it's nice to know it's there), I had to get the custom full length tailpipes but if you're running a big cam they're good because the water enters the exhaust stream only a couple inches from the tip.

GLM makes an aluminum manifold that works pretty good for the price. Dennis Moore sells them for around $600. Check his ebay store. I installed a set of Revolutions on a 6.2 for a customer. It picked up about 10 HP on the prop shaft dyno. None of them give you much power increase.

The GLM seems like a good choice for the $$ UGLY as **** tho.

I like my Revolutions too....way lighter.....noticably better holeshot and like CB says a couple hundred more rpm on top

10 hp?....sounds about right,I wasnt expecting alot....... were the 6.2's stock??......they also took just under 200lbs off the back of my boat.....I NEEDED exhaust at the time....Im very happy all in all.

bobl, was this on a stock 6.2? What is your opinion on the Revolutions (fit and quality)? Any idea on the weight savings? Sorry for all the questions but I respect your opinion from reading other threads of which you contributed. Got a 292 with twin 6.2's and contemplating an exhaust swap. Sorry for the hi-jack!

Chime-in as well pullmytrigger!

I'm also interested in the Revolutions for my new stroker. Another good point on the Rev's is that they have a dry joint at the manifold/riser connection whereas the GLM's do not. They also have an anti reversion riser setup. Anyone know how big of cam they can support before reverting? I wonder how much my 385ci would benefit from Rev's. AFR heads, RPM Air Gap, 750DP, Voodoo rockers, RMBuilder custom Hyd Roller? Currently have Aluminun Glenwood Magnaflow manifolds and FastGlass Stainless 16" long risers.

with hp you guys are talking about you will need to be carefull about water revertion, the rev marine only offer a standard cast riser that will revert water for sure. I would look into some eddie marines with hp risers, cheaper isnt always better when your fixing a motor water got into. check with diamond performance they quoted me a great price on some for a big block.