hey i found these headers for sale and i was wondering if anyone had any experience with them and would know if they would fit a 91 firebird with the l03 without any issues there dynomax sbc headers

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Even if they did fit it's kind of pointless to put them in an L03 car.

 

y? its been said on here numberous times that headers are one of the best bolt ons for the lo3

 

Because theyre long tubes. Way overkill. Long tubes make you emissions ILLEGAL (FEDERAL CRIME, regardless if your state enforces it), ruin your ground clearance, and force you to fab up a custom exhaust system. And unless those are 82-92 camaro SPECIFIC long tubes they wont fit anyway. They dont look like 82-92 long tubes to me, but they might be.

Get some shorties and use a stock style exhaust. The L03 wont see much more benefit from LTs than it will from a more street-friendly setup.

 

ok sounds good thanks for the advice ill look for some shorties instead then.

 

What ever you decide get a custom Y-pipe. The stock one merges at 90°. It causes excessive back pressure and it the worst part of the entire stock exhaust system IMO.

 

Just get headers that come with a y-pipe. There are no headers that work with the stock y-pipe so you wont even have to worry about that.

 

found some hooker super comps for 65 bucks i just gotta get all the bolts and flanges etc. i wonder if i can find a good aftermarket y pipe that will work well with these

 

Are they THIRDGEN SPECIFIC?! If not, good luck. Also you will most likely have to make one even if they are thirdgen specific. All y-pipes are different for different headers. Rarely do they sell y-pipes separate from the headers. Especially if its a generic shorty header, they wont make a y-pipe specifically for our cars for generic headers.