[dre2001ss]

Looking into a dohc engine swap into my 97 gt. Will i need a new trans? New exhaust? Is there a list of everything that i will need so i can see if its cost effective to swap my motor. If i swap my motor what could i sell my 97 gt's motor with 48,500 miles on it for? Any links or information about the swap or anything related will be a great help in this matter.

[asa67_stang]

well, considering that the SOHC and the DOHC both use the same tranny, i'd say that that should be ok to hold onto, might need a new clutch though, me, i'd go ahead and do a T56 at the same time

new harness prolly
since the heads are different, it makes sense that the exhaust would be different

as for cost effective, it really depends on what you want to do, the DOHC just plain flows better than the SOHC, so it'll respond better to mods

[dre2001ss]

well it doesnt matter to me how i get to 300+rwhp but thats what i want. looked into a supercharger doesnt get me to 300+rwhp and PI heads, intake and cams doesnt either. I know that a cobra engine wouldnt get me 300 to the wheels but i can easily mod to get me there. I was hoping that if i get a used engine and sell mine i could do the hole swap for under 2000 if i did all the work myself.

[dre2001ss]

I want to have a sleeper. show some of the gm boys my tail lights

[dre2001ss]

Would a Crown Victoria Police Interceptor 4.6L engine be better then a dohc cobra engine? i dont no anything about the interceptor 4.6L engine any info would be great.

[qwkstang97]

Well you can get over 300 hp to the tires for cheaper than a DOHC.

P&P PI heads decent cams, long tube headers, upper plenum and a good tune will get you at least 300.

If you really need the DOHC you will need the following.
Cobra wiring harness and computer and exhaust manifolds as well as midpipe.
There are some other parts needed but either way you arent going to get the parts and get it done for under 2k.

[qwkstang97]

Originally posted by dre2001ss
Would a Crown Victoria Police Interceptor 4.6L engine be better then a dohc cobra engine? i dont no anything about the interceptor 4.6L engine any info would be great.

Nope.

If it is newer it will have PI heads but it wont be a DOHC.

[qwkstang97]

Here are a couple of guys that are where you want to be .


http://forums.modulardepot.com/showt...light=300+RWHP

http://forums.modulardepot.com/showt...light=300+RWHP

Check that site out there are quite a few guys running at or close to the 300 mark NA.

[dre2001ss]

If i have the heads and intake what would it cost to p&p them.

[qwkstang97]

To tell you the truth man I have no idea on the cost of a good P&P job. Just search modulardepot.com to get an idea on pricing or somebody here might know.

[dstang97]

Your best bet is to get a 99+ motor used or out of a wrecked car and a procharger. my friend did that and got 450 rwhp

[qwkstang97]

Originally posted by dstang97
Your best bet is to get a 99+ motor used or out of a wrecked car and a procharger. my friend did that and got 450 rwhp

I hope he has deep pockets the stock internals tend to let go around 400 hp at the crank.

Actually the choice is yours and it all depends on how much cash you have to spend. Lately the most cost effective thing to do for NA with our cars is to just put a PI intake and PI cams in on the non PI heads. The downside is you wont get 300rwhp but the positive side is it is cheap. Look at my sig all I did is take my non PI shortblock and bolt on stock PI heads, cams and intake and tuned it. Now next winter I probably wont get the P&P treatment but long tubes and cams will go in. I only have 350 invested in the upper half of my engine and I now have a totally different car. you have a low mileage shortblock use it to your advantage.

[dstang97]

get the new 5.0 magazine they had a great article about or non pi motors there claiming they can make more hp with non pi heads with minimal mods

[gate]

go with a 351 winsor you will get more for you money but then again money may be no object 351 about 10 on compression a rollercam 3500 stall 4.10 gears 830 carb world product heads SR.2.02 /160VALVES YOU WILL RIDE let me know i will give you cam no#s

[97GTstang]

why not get a 96-98 cobra motor which is dohc. All you would need to do is change the harness and thats it. Right off the bat you would have 305 to the crank. Then work from there.