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With a big block and side pipes, it's easy, as long as the headers you buy actually fit. You have to raise the front end of the car and drop them out below, and bring in the new ones from beneath. I bought hooker supercomps with side pipes, and although there is VERY little clearance (actually rubs a little on the passenger side frame when everything is tightened up), I didn't need to dent anything with a hammer to make it fit. I assume that there is more working space if you are working with a smallblock.
1977 small block, automatic. Exhaust exits out the back. As of now, and as far as I know, everything is original at this point.
So you're replacing manifolds with headers. A 77 originally had a 2 into 1pipe after the manifolds connecting to a catalytic converter, then splitting into two pipes and mufflers. If you are installing headers, you should have full dual exhausts, with or without cats. I bought 2.5 inch pipes intended for a 74, full duals with no cats. You then need to shorten the front pipes, probably make up 2 short pipes to connect from the header reducers into the 2 pipes where they meet at the trans crossmember. You most likely will need a muffler shop involved to fab those short pipies and weld them to the collectors.
Does anyone have any experience with these items? With the headers, are there any adjustments that need to be made for clearance or do they hang to low?
Does anyone have any experience with these items? With the headers, are there any adjustments that need to be made for clearance or do they hang to low?
I can only comment on the second one. The black will burn off quickly. I painted my with hy-temp paint and they have been holding up well for a couple of years. You pay for what you get, at the time I wanted to save money, wish I would have spent it on some Hookers. The collectors work well if the are close to perfectly aligned. Other wise they are thin and will blow collector gaskets quite often. The flange to the block seems better, they were thick enough and looked flat. But I did invested in bolts with keepers to keep them tight.
Have a 73 sb auto it is eays to do, just have to jack the front up high to do it from under, and yes I got a 2.5" fit well just had to cut some off the front.
i used shorty street rod headers on my '76 auto 350. i really like them. got them from ss autochrome. they are stainless stell and have very thick flanges so they will never warp. i got my exhaust system from allen's stainless when i was at a carlisle show years ago. still clean to this day. the only thing is with the shorty headers you have to use some different bolts to mount the ac compressor. basically some spacers. also the exhaust pipe that connects to the header collector will need to have the flange welded to it at the right length. i did it myself b/c i have a welder. i really like t his set up.
This is just me but I do not like Summits house parts. I know they are more money but I would go with a good set of Hookers or Hedmen headers. Again this is just my opinion.
This is just me but I do not like Summits house parts. I know they are more money but I would go with a good set of Hookers or Hedmen headers. Again this is just my opinion.
Yea, I have since changed to looking at this set...
I did a quick search on the thermal coating and it states it is supposed to protect it from rust.
I'm trying to decide if I should get the pypes exhaust or go to a shop and have one made. Some guys seem to get the pypes system to install easily, others seem to have problems.