billfisher said:the 99+ have better tuning,heads,cams, and intake. plus more HP/tq . get the 97.
96-98 look the best.
yup, just the cams are worth a good 15 HP.GDawg said:They have better cams...? That's the first I've heard that. I thought it was all heads and intake...?
You should really try to find this out, especially if you ever decide to get it blown one day. But yeah, even if it is an NPI block, you'll come out better with the newer PI heads/cams/intake swap and get a tune on it. Be prepared to run a higher octane fuel (93+) if the block is NPI as the higher compression will require it.Aggie 08 said:Ok, after doing some more reasearch, I'm starting to wonder if they really put a 2000 mustang block in it, and not just another 96-98 block. My car does have the non-pi heads in it, does this mean that it cant be a 2000 4.6l? I'm gonna go to the shop tomorrow and try to get the vin# from the mustang that he got the engine from. Is there a # on the engine anywhere, that I can match it to?
NO if its a 2000 shortblock you will have lost power because of the lower compression!!!!!Aggie 08 said:Do y'all think I got any extra power from the newer block (that is if it does actually turn out to be a 2000, and not another 97') other than it just having lower millage?
are you sure bout that Bob? i know youre a genius and all, but i dont think i agree. dont the 96-98 GTs have the exact same block as the 00-04? i thought the only difference were the heads, cams, and intake, aside from COP and other misc things. the blocks should be exactly the same. all the shop did was take the bare block and assemble his old rotating assembly, heads, and intake. thats what i gleaned from his postDropTopPony said:NO if its a 2000 shortblock you will have lost power because of the lower compression!!!!!
DerekStangGT said:are you sure bout that Bob? i know youre a genius and all, but i dont think i agree. dont the 96-98 GTs have the exact same block as the 00-04? i thought the only difference were the heads, cams, and intake, aside from COP and other misc things. the blocks should be exactly the same. all the shop did was take the bare block and assemble his old rotating assembly, heads, and intake. thats what i gleaned from his post
i was assuming they took just the bare block from the '00 and used his old rotating assembly. we still arent sure exactly what they did. plus, is it even possible to bolt non PI heads to a romeo or windsor block? b/c bolting PI heads to the older blocks required adapter plates if im not mistakenMustang5L5 said:Pistons are different. This is where the CR changes. It has actually changed a few times. You have the 96-98, the 99-00 and the 01-04's which have 3 different CR's from the factory. The 01-04's are slightly higher than the 99-00's. Also, there were two different 99-04 engines, some built in Windsor Ontario and some in Romeo Michigan. They have slight differences.
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