Exhaust System Uprgrade Concerns

TXPONTIAC66 · Posted: Mon Oct 06, 2008 1:29 pm Post subject: Exhaust System Uprgrade Concerns

Hey guys, just looking for y'alls two cents in regard to what sort of exhaust to use. The engine is nearing completion and I'm trying to find the best bang for my buck with an aftermarket exhaust system.

There is no real way to determine what it will sound like once I get it installed but maybe some of you guys have an idea.
Its a 327 c.i., hotter cam, 650 edelbrock cfm, edelbrock inake, stock heads, stock headers.

I'd love to have a mean, aggressive, sound. something that little kids would be terrified of. but nothing too over the top where it just sounds unrefined. I came across the Flowmaster American Series Thunder, Magnaflow, Dynomax, etc.

The intent is to have something mean, but I dont think I can quite afford a 600-800 dollar exhaust system. Something in the 300-400 range would work. I had intended just to dump the exhaust, but maybe I can get some ideas on the pros/cons of this. I havent found a whole lot of other threads concerning this topic, or maybe I'm just looking in the wrong place.
Thanks for any ideas or suggestions. The engine should be complete within about 2-3 weeks so i'm starting to get pretty ancy.
Thanks guys,
Ev

theelcaminofactory

ElkyHolik87 · Posted: Mon Oct 06, 2008 2:51 pm Post subject:

hey buddy im curiuse to know what kinda power your making with your 327? i got a 68 ALL STOCK for being a forty year old 327 it gets up and go's. it would be faster with a better tranny though Confused

it has a power glide in it. im not to concerned with being LOUD i like to be stealth so the cops dont hear me mashing down the road on those night of drinking Poke Tounge

i pesonally would put some high end headers and magnaflows. i had a pair of magnaflows in my 89 lincolin (302 windsor) or how ever you spell it. and it sound gooooooodd nice low hum it didn't roare when i smash'ed it but it sounded solid plus i didn't have headers so thats why it wasn't loud.
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TXPONTIAC66 · Posted: Mon Oct 06, 2008 4:31 pm Post subject:

theelcaminofactory:
- I'd love to buy some aftermarket Headers but I just dont have the money, so I'm just gonna have to go with the stock cast iron exhaust manifolds. I know it would help me tremendously by upgrading but I'm sort of stuck between a rock and a hard place. All of the headers that I have researched would be in the 600-1000 price range.
- The reference to "terrifying little children" was more of a hypothetical one than literal. I see your point about being concerned with engine performance over just a loud car. That is my issue, I dont want to have just some loud obnoxious exhaust but one that would have a "refined" yet still intimidating exhaust note. Something capable of turning heads and worth being noticed as the car isnt much to look at right now. My 66 Pontiac 326 c.i. has turbo mufflers which have a very nice rumble at idle but smooths out some under acceleration. So I'm looking for something more than that.

Elky Holic:
- When I purchased the car it had a Rochester 2bbl. I ran the numbers and the car should have come from the factory with a 4bbl. This makes sense as the 2bbl and intake manifold were from a 67' model. It should have been a 275 h.p. model.
- It turns out once we got the engine broken down, the block has been bored .40 over. The car had way too much blowback to produce any kind of power so I really dont know what to expect once everything is complete. We switched the 2 spd powerglide for a TH-350 which should make a big difference itself. I'm hoping to be somewhere in the 310-320 hp range.

theelcaminofactory · Posted: Mon Oct 06, 2008 5:07 pm Post subject:

http://store.summitracing.com/egnsearch.asp?Ntt=headers&N=700+4294908216+4294924702+4294908186+4294918680+4294799365+4294880275+115+4294840116&Ntk=KeywordSearch
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TXPONTIAC66 · Posted: Mon Oct 06, 2008 5:34 pm Post subject:

[quote="theelcaminofactory"]http://store.summitracing.com/egnsearch.asp?Ntt=headers&N=700+4294908216+4294924702+4294908186+4294918680+4294799365+4294880275+115+4294840116&Ntk=KeywordSearch[/quote]

Thanks for the link elcaminofactory! Those prices are much more reasonable than I had been expecting. I can do a little bit more research and find a prospective pair to buy. I guess just about anything will be better than the stock cast irons.
As far as exhaust, do I need to wait on that until I choose a particular set of headers? I'm guessing 2 1/2 to 3" pipes will be good. The main think that worries me is the clearance issues. I guess manufacturers now are adept enough at making a product that can be installed with minimal modifications if any.

65 ELKY · Posted: Mon Oct 06, 2008 7:15 pm Post subject:

I have a 65 with a 350. The exhaust is Doud haedder 1'' 5/8 to 3'; collectors , x piping flowmaster mufflers and dumps before the axel. Sound bithin it turns heads. When are you looking to do your exhaust cuz i'm getting rid of mine in Nov. When I do my turbo. I will sell the whole thing cheap.
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TXPONTIAC66 · Posted: Mon Oct 06, 2008 7:40 pm Post subject:

[quote="65 ELKY"]I have a 65 with a 350. The exhaust is Doud haedder 1'' 5/8 to 3'; collectors , x piping flowmaster mufflers and dumps before the axel. Sound bithin it turns heads. When are you looking to do your exhaust cuz i'm getting rid of mine in Nov. When I do my turbo. I will sell the whole thing cheap.[/quote]

I'm probably lookin at doing it in mid october, theres a pretty good performance shop around here that I think can give me a pretty good deal and are real personable. Thanks for the offer though 65 Elky. Once everything is complete I will upload a bunch of pics.

65 ELKY · Posted: Mon Oct 06, 2008 8:53 pm Post subject:

Post some pics in the 2nd GEN gallery you can do some before and afters.
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TXPONTIAC66 · Posted: Tue Oct 07, 2008 3:12 pm Post subject:

Ok I think I have a set up that could work. Theres a performance parts dealer around here that has Hooker Headers: 2451HKR for about 180$ ($20 mark up) and Flowmaster 40 Series Delta Flow Mufflers for about $80 a piece ($10 mark up), I still need to get an AC bracket and Header Reducers but with everything it should be right around or a little over $400 not including the pipes.
I've never heard this combination before. The mufflers sounded pretty good from Flowmaster's website, just about what I was looking for. It'd be much nicer to hear it in person though.

http://store.summitracing.com/partdetail.asp?part=HOK%2D2451HKR&view=1&N=700+4294923429+400390+4294839039+4294908216+4294924702+4294908186+4294840116+4294918680

http://store.summitracing.com/partdetail.asp?part=flo-42541

Have any of you guys had any experience with this type of setup? I'm assuming that headers today are made to better fit certain applications and shouldn't have to worry too much about clearance, loosening up, or anything else.
I havent bought the set up yet as I wanted to get a good idea of the products I'll be purchasing.

Greatly Appreciate any Advice!

CoyoteOn2 · Posted: Tue Oct 07, 2008 3:21 pm Post subject:

You'll be happy with those 40 seriers, if you want a little more agresive sound, go with there 44's
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