Tbird heads April 21, 2009, 01:56:33 PM Just wondering if it is possible to put 4.0L head on my 3.8 or does anyone have a set of 3.8 heads? Would it be simpler if i were to drop a 302 instead?? what are your thoughts... Quote Selected
Tbird heads Reply #1 – April 21, 2009, 04:06:08 PM I don't think they fit. What year 3.8? If it's 88 it's more different than all the others. Quote Selected
Tbird heads Reply #2 – April 21, 2009, 04:54:55 PM I'd be a whole lot simpler to swap to a 5.0 than try to use a 4.0 head on a 3.8(in other words that ain't happnin')... Unless you access to 5.0 parts Bird, I wouldn't even consider that option as individual pieces are getting harder to locate... Quote Selected
Tbird heads Reply #3 – April 21, 2009, 09:03:19 PM I just did a v6 to v8 swap in an 88 tbird. The motor was an 87 tbird motor. With a 88 v8 engine harness everything plugged and played. It was not an easy swap, but mostly because i'm 18 and didn't really know what to do.If your car is an 88 v6 and want v6 heads, let me know, I have the ones off my v6 engine. Quote Selected
Tbird heads Reply #4 – April 21, 2009, 11:22:33 PM yeah, you got the heads she needs.87 - 83 were nothing like the 88. Quote Selected
Tbird heads Reply #5 – April 22, 2009, 12:16:22 AM Wow those 88 heads are rare? That's funny cause last summer I pulled a perfectly good set and no one wanted them so I sold them as s aluminum. Sucks to be 88 3.8 owner I guess.Stuckman Quote Selected
Tbird heads Reply #6 – April 22, 2009, 02:05:37 AM Yes, the '88 has sefi, where as the '87 and older 3.8 engines were cfi (throttle body)Unless she's getting the heads from someone who pulled a good motor and replaced it with a V8..i'd be leery...too many overheated engines t risk buying bad heads...I've got 3 sets of 3.8 heads, and none of them are any good.You may be better off replacing the whole engine with another '88 long block, I see one on ebay all the time. Try craigslist too. Quote Selected
Tbird heads Reply #7 – April 22, 2009, 02:09:05 AM I'd just get the newer mustang block and use all the stock electronics. Quote Selected
Tbird heads Reply #8 – April 22, 2009, 09:06:49 AM Quote from: ipsd;268544Wow those 88 heads are rare? That's funny cause last summer I pulled a perfectly good set and no one wanted them so I sold them as s aluminum. Sucks to be 88 3.8 owner I guess.StuckmanTell that to my girl!!!!!!!!!!!!!! Quote Selected
Tbird heads Reply #9 – April 22, 2009, 10:31:51 AM Correct me if I'm wrong, but can't you get SEFI V6 3.8L heads off any 88-94ish Tbird or cougar? If so, there is about a 12 sets at the PickNPull here. I have a set of SC Heads in my garage if you wanted to add a little boost (eg, they will drop your compression so you can run more boost). Quote Selected
Tbird heads Reply #10 – April 22, 2009, 12:00:27 PM 4.0 no but the 4.2 heads are a bolt on. The 4.2 liter engines from the Ford trucks. I don't know what the advantage is except maybe bigger valves. Quote Selected
Tbird heads Reply #11 – April 22, 2009, 12:29:46 PM Quote from: jpc647;268512If your car is an 88 v6 and want v6 heads, let me know, I have the ones off my v6 engine.Thank you for your input... I've got the 88 bird V6 :hick: Just curious as to if you are willing to sell, do they need to be machined, where are you shipping wise...? What about a cost? Quote Selected
Tbird heads Reply #12 – April 22, 2009, 01:21:08 PM Quote from: tbirdsps;2686114.0 no but the 4.2 heads are a bolt on. The 4.2 liter engines from the Ford trucks. I don't know what the advantage is except maybe bigger valves.The advantage to using a 4.2 is that it's...well, a 4.2 Lotta work, I think JeremyB is doing this...??/end hijack Quote Selected
Tbird heads Reply #13 – April 22, 2009, 02:48:41 PM Quote from: FordTruckFreeek;268628The advantage to using a 4.2 is that it's...well, a 4.2 Lotta work, I think JeremyB is doing this...??/end hijackI think he is just referring to swapping heads. To get the benefits of a 4.2 you would need the entire engine. Perhaps you can have the heads decked a few mills to bump compression a bit. Run premium gas + few degrees of timing = more umph. Aluminum ports easy too. You could grab a set from a JY for a couple bucks and try porting them. Go here http://www.v6power.net/ and read up about some v6 lovers.The most Wow/$ I have ever gotten is from swapping gears. Quote Selected
Tbird heads Reply #14 – April 22, 2009, 10:51:59 PM Quote from: FordTruckFreeek;268555Yes, the '88 has sefi, where as the '87 and older 3.8 engines were cfi (throttle body).NO IT IS NOT:Dthe appearance can be misleading.1988 3.8 L engine 6 injectors (batch fire)inj 1,2,3, pin 58eec to cyl 1,2,4 respectivelyinj 4,5,6, pin 59eec to cyl 3,5,6 respectively*inj 1,2,4 fire on first shot*inj 3,5,6 fire on second shot1982 - 87 3.8 L engine CFI (Bank fire) including some earlier 5.0's(larger CFI which is a nice mod to a 3.8 and bolts right on) inj 1 , pin 58inj 2 , pin 59SEFI would demand an eec control ground / pin for each and every injector as is the 5.0 / 5.8 Quote Selected
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