ECU5.0 said:man, i honestly dont know....i bought the car with them on it. it had a compucar nitrous kit. so we all figured the kid wanted more fuel with his nitrous. i havent really thought about it....but its definetly something else i need to do. thanks
68converted said:If you decide to switch back, let me know I will trade you for my set of 19#. They only have 65K miles original on them. I am going with heads and a new cam in a few days and I need the 24# units. Let me know by PM, I am glad to send the injectors to you first so you are not down without the car. My engine is waiting to be dropped into a '68.
88stangmangt said:all he needed to do was just get a fp and he would have been fine guess he didnt know what he was doing. least you got some one who will trade. anyway you should make some before and after exhaust clips and let us know how they feel also.
Gearbanger 101 said:ECU5.0
1.7rr on a completely stock Mustang isn’t going to give you much at all. Some will say 10-15hp, which is probably pretty close if you’ve got a host of other breathing mods done to the engine (heads, intake, etc) but it’s probably going to be more like 4-6hp on a stock 5.0. Even with the larger TB, exhaust and injectors. The Heads and intake are just too big of an obstacle right now to make the rocker arms worth while. I’d spend my money on porting your heads/intake, or saving for an aftermarket set. If you plan on getting a cam in the future, go with a set of 1.6rr and add the extra lift and duration with your cam selection. Adding lift with 1.7rr is the poor-mans way of adding lift, but not the best way. In the long run, your valve train will suffer far less with the 1.6’s, than the will with the 1.7’s.
It's true that it doest put more strain as it chages the valvetrain geometry. Rockers Multiply the camshafts lift which is where you get the extra lift, ie. power from. If you are planning to do heads/cam/intake in a year or so then yeah i would get 1.6's but if your not, it will give you power increase. Even if you dont go with the 1.7's get the 1.6's. the stock ones tend to flex and are more than likely not giving you a true 1.6. They also create more friction and are just crappy in general.Gearbanger 101 said:ECU5.0
1.7rr on a completely stock Mustang isn’t going to give you much at all. Some will say 10-15hp, which is probably pretty close if you’ve got a host of other breathing mods done to the engine (heads, intake, etc) but it’s probably going to be more like 4-6hp on a stock 5.0. Even with the larger TB, exhaust and injectors. The Heads and intake are just too big of an obstacle right now to make the rocker arms worth while. I’d spend my money on porting your heads/intake, or saving for an aftermarket set. If you plan on getting a cam in the future, go with a set of 1.6rr and add the extra lift and duration with your cam selection. Adding lift with 1.7rr is the poor-mans way of adding lift, but not the best way. In the long run, your valve train will suffer far less with the 1.6’s, than the will with the 1.7’s.
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