What do mean "a computer for it that is flashed for a 302 with a B cam"????
Does it have a custom burnt chip?
Does it have a custom burnt chip?
87 mustang gt 1.73 roller rockers
trying to decide on what rockers to run on my car, its speed density, has gt40p heads, explorer intake, and i have a computer for it that is flashed for a 302 with a B cam. What im wondering is if anyone has used the stock 87 cam with 1.73 rockers, ive calculated the lift out to be .4779 which is a fairly close lift wise to the B cam, also do i need to worry about piston to valve clearance because id be using such high ratio rockers?
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ya its custom flashed, it was in my buddies 87, it had a b cam. I figure that it should work as long as i can make the duration similar.
You will be generating 0.519" of lift with 1.73:1 roller rockers and a B303 cam. You shouldn't have a clearance problem, plus maximum lift doesn't affect clearance anyway. I've run 1.7:1 roller rockers, a B303 cam, and GT40 heads over stock pistons without a problem. As always, you should check it if possible.
Keep in mind that if you have stock valve springs right now you will need to upgrade those. Something like Trick Flow springs will work fine.
But I'm confused here:
Keep in mind that if you have stock valve springs right now you will need to upgrade those. Something like Trick Flow springs will work fine.
But I'm confused here:
How exactly are you going to alter the duration?I figure that it should work as long as i can make the duration similar.
So OP you have a stock cam and want to slap 1.73 rockers on it?
And you computer is not flashed but it may have a chip on it. Check to see if it has a chip piggy backed onto the computer.
And you computer is not flashed but it may have a chip on it. Check to see if it has a chip piggy backed onto the computer.
well its a speed density car, im putting a custom flashed computer in it from a car that had a B cam and only a B cam, if i were to use the stock computer with a large ratio rocker on speed density, i imagine that it would be hard for the car to find an idle and run properly. i am not installing a cam just 1.72 rockers so basically, im trying to recreate a B cam with stock rockers. i know the B cam has lots of duration with a relatively small amount of lift in comparison to other cams. So with a car that has a Custom flashed chip for a B cam, i am going to run 1.72 rockers on GT40P heads with a explorer intake. What im really asking is has anyone used 1.72 rockers and has anyone experienced any problems using this setup?
ya it has a chip on the back i guess i should say the computer isnt flashed but the chip is custom for a B cam
Whats the total with 1.7's,E cam,P heads(no mill)?You will be generating 0.519" of lift with 1.73:1 roller rockers and a B303 cam. You shouldn't have a clearance problem, plus maximum lift doesn't affect clearance anyway. I've run 1.7:1 roller rockers, a B303 cam, and GT40 heads over stock pistons without a problem. As always, you should check it if possible.
Keep in mind that if you have stock valve springs right now you will need to upgrade those. Something like Trick Flow springs will work fine.
But I'm confused here:
How exactly are you going to alter the duration?
Oh, I see what you're saying. You want to run a stock cam and 1.73 roller rockers. I thought you wanted to run a B303 cam with 1.73 roller rockers. In that case, you will be 100% fine. Switching from stock rockers to 1.73 roller rockers on a stock cam will not cause you any interference problems :bigthumbsup
... The total what?Whats the total with 1.7's,E cam,P heads(no mill)?
The total lift? I know total lift isnt a factor in piston clearance but I wanted to know what it was,I dont know the formula to figure it out. I guess my question is will I have clearance issues with the E cam,1.7's,and stock pistons? Sorry to interfere with the OP thread.Oh, I see what you're saying. You want to run a stock cam and 1.73 roller rockers. I thought you wanted to run a B303 cam with 1.73 roller rockers. In that case, you will be 100% fine. Switching from stock rockers to 1.73 roller rockers on a stock cam will not cause you any interference problems :bigthumbsup
... The total what?
You should be fine, but it would be a good idea to check it. An E303 with 1.7:1 rockers will generate 0.529" of lift. Make sure your springs are up to the task.
By the way, the formula for that is: ((specified lift)/(ratio specified with)x(ratio you want to use)
For an E303: ((0.498")/1.6)x1.7 = 0.529125"
By the way, the formula for that is: ((specified lift)/(ratio specified with)x(ratio you want to use)
For an E303: ((0.498")/1.6)x1.7 = 0.529125"
You should be fine, but it would be a good idea to check it. An E303 with 1.7:1 rockers will generate 0.529" of lift. Make sure your springs are up to the task.
By the way, the formula for that is: ((specified lift)/(ratio specified with)x(ratio you want to use)
For an E303: ((0.498")/1.6)x1.7 = 0.529125"
Perfect,thank you for the formula. And yes on the springs,I have beehives Im going to install this week maybe.
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