Puttin Cams in a 97 Cobra Mustang
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2,019 Posts
Good luck with the cam swap
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4,333 Posts
Every small gain adds up.
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10,257 Posts
true, but there are better ways to spend your money to see larger gains
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373 Posts
if you want cheap gains for a N/A 4v put some 03/04 mach 1 cams in it. A hell of alot cheaper than a set of aftermarkets and it will get you around 18-20 rwhp gain. A set of used aftermarket one will compliment your other mods decently with a good tune. scroll through corral.net parts and modularfords.com, you will most likely be able to find some for cheap. And putting them in requires 3 special tools. 1 to line the crank up to get #1 to TDC and 1 to take out and install the rocker arms before you take out the old cams and after you get the new ones in and 1 to lock the cams in place to torque the cam sprocket bolts. oh yeah and the balancer puller and installer. Be careful when you compress the secondary chain tensioners as the nylon track on them cracks easily. I also believe the cam bolts themselves are a torque to yield which means they are a 1 time use and need to be replaced everytime they are taken out. dont forget to put silicone in the front timing cover seal and valve cover junctions or it will leak oil like a mofo! If its his first time doing it, i would at least get a haynes or chilton manual and read through it before he attacks it. Good luck man
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373 Posts
The tools make it much easier, but as always there are other ways of getting the job done without them. But yes its not hard, just somewhat time consuming.
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1,166 Posts
So are the following specs incorrect??
I don't remember where I ran across these, but if you have different numbers let me know.
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373 Posts
Which specs are you talking about? You mean putting the smaller duration intake cams in? Nope, its not wrong. That car has the B heads on it and could benefit from less intake duration due to the 2 seperate ports that have a total of 222 cc's of runner volume. Thats alot of volume for only 281 ci especially if the IMRC plates have been deleted.Thats more intake runner than most people put on their stroked 302's! Granted you will loose a little top end power but gain low and midrange which will make it a better street car, if he likes more top end then retard the cam timing a couple degrees. Now if he would like to keep his stock cams and get more power out of them, then his stock cams will make more power out of a tumble port or a C series head due to the single intake runner and only 177 cc intake runner volume. Another interesting thing between those 3 heads is that the 99-up heads flow a little more than the 96-98 heads with a smaller runner, which means alot more velocity and could play a role in why those heads respond to the early cobra intake cams better than the B heads do and vice versa. Or maybe even advance his stock cams some.
Your specs are partially correct. Actual MEASURED specs are a little different. On the 03/04 mach 1/cobra etc.. cams is all the same as yours except lift checks in at .397 accross the board. The 96-98 cobra cams are also .397 lift straght accross with exhaust duration at your 196 @ .050, but both primary and secondary intake lobe durations check in at 206 @ .050 not 196/206. All check in with a 114LCs. There has also been some he said she said that the early cobra cams had a 3-6 degree offset ground into the intake lobes to open the primary runner valve sooner than the secondary as a emissions tactic to start swirl motion in the chamber, to my knowledge that is yet to be proven. All other cam companies phase both lobes identical. I think this info has been posted a couple times in modularfords,svtperformance and mach1registry. Ill try to find a link and send it to you. :seeya:
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373 Posts
anytime man :beer:
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