I have a question would this headers fit my 89 350 tpi engine
http://store.summitracing.com/partde...5&autoview=sku
or should i get these
http://store.summitracing.com/partde...5&autoview=sku
Would like to know because i am rebuilding my engine and the headers are cracked

 

Yes, The first ones will fit (not very well, but they fit), But you'd probably be happier with the full length headers. Also the ball and socket flange on the long tubes seal better than the 3 bolt flange on the shorties.

 

So the second one would be better for my engine

 

I'll just put it this way, The long tubes will give you better torque and horsepower than the shorties. With the bigger primaries and the 3" collector of the long tubes your engine will breath better. So yeah the long tubes will be better for your engine. Connecting them to the existing exhaust might be a pain though, You'll probably have to make a custom y-pipe (I'll let someone else tell you whether or not there is a y-pipe made for the 3rd gen's with long tubes, Because I'm not sure).

 

So with the shorties headers it easier to connect and exhaust for it

 

yes, but the long tubes are alot better for power gains as taz stated. shorties yeild better ground clearance and ease of install. i run the long tubes. u will need collector extensions like these http://www.jegs.com/i/Hedman/500/18805/10002/-1

you will also have to run new exhaust, imo long tubes are the way to go, even with the headaches of the install

 

Well i am gong to have the engine out so it will be easier right

 

Since I'm old and lazy, I like the easy route: I'd buy shorties which INCLUDE the Y pipe, such as the Hooker 2055's. You really don't need more than that for a stock motor, IMO. I run them on my 350/330 with good effect anyway. No ground clearance issues with them either--hey, my car is low enough as is. Though it's probably more than you wish to spend, here's a direct-fit system (no welding, no cutting, no bending, etc.): Hooker 2055's (Jeg's 520-2055). Catco high-flow converter (Summit CTO-9118). Hooker catback (Summit HOK-16823HKR).

JamesC

 

if you have the engine out i would def go long tube, set the headers in the bay before droping your engine into the bay. use a bungie to secure them to the fender wells. thats the hardest part of the install for long tubes. the collector extensions will bolt right on. they route under the crossmember. i used clamps like this http://www.jegs.com/i/Dynomax/289/33226/10002/-1 and these mufflers,
http://store.summitracing.com/partde...5&autoview=sku

all 3in, my car is lowered about 2in as well, so they scrape a bit, 2 1/4 or 2 1/2 will work for you alot better.

 

My car's not lowered and I'm running shorties, and I still pussyfoot around on uneven roads--however, I don't drag anything but the air damn occasionally. Out of curiosity, how much clearance is there between the tubes and the ground?

JamesC

 

i have about 2in on level ground, they scrape on roads where big trucks make ruts, and steap driveways. i rarly street the car cause its extremely loud. i want to add som 45deg bends to dump out in front of the back wheels, hoping it might quit it down a bit.

 

If you are going with shorties, be sure to consider headers from Dyno Don, on this site. They're 1.75" primaries with (IMO) excellent form, fit and function.
Bill

 

BTW, Iroc a, hoping to have a thirdgen get-together here in Lawrence sometime in the spring. Maybe you'll bring you car over.

JamesC

 

right on, if i have my cage in and still have a DL, im in! kinda in the hot seat out there.

 

How much are those hooker headers for

 

look them up, they arent cheap, but they are superior to the ones you have listed

 

I put on some long tube hedman and they are great a little headache with piping but was already getting full done anyways

 

I will get the long tubes it won't scrape the ground right my car is stock height and would i need the y pipe too with the long tubes and what muffler should i put i am thinking thunder series flowmaster

 

My guess is that you'll have to be careful regardless of stock ride height. But each to his own. .

JamesC

 

with the shorties i won't have to right and what muffler would you recommend me

 

i may be wrong, but there is no y pipe for the long tubes. sounds like you should just go the bolt on way, and get the shorties. i would at least rec the flowtech ones over the summits. as for mufflers that is your choice, just remeber that these cars ar very limited in ground clearance even at stock ride hieght. you best bet is to mount the mufler/muflers in the stock location, in that case go with a flowmaster single in dual out so it at least looks cool and will have a decent sound.

 

I told my uncle he is a mechanic and he told me he willl help me out a way to put the long tubes thank you guys for all the help