Is this going to be streetable?
08-21-2008, 11:56 PM
#12
3rd Gear Member
Join Date: Apr 2008
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Posts: 939
Nice looking motor. There is no replacement for displacement. Here's some thoughts, things you might look in to.
What kind of lifters? Solid, or hydraulic? There's no way you're going to reliably get a hydraulic cam to 6,700 rpm's. You'll get valve float long before that. A solid lifter cam can run to 8-9K rpm's. Depending on the rest of the valve train, of course. But then you have to be carefull about losing your low end torque.
Roller cam? If not, pay special attention to break in, zinc content of your oil, valve springs for break in, etc. flat tappet cams are getting tricky these days.
That appears to be a stock block. Fortunatly, you have a main cap girdle. But don't try any big power adders. The block can't take it. A little N2 once in a while is probably OK. But big shots over and over is asking for an explosion. Especially if your spinning close to 7K.
11.6:1 is not very pump gas friendly. A huge cam with a lot of overlap will calm that down a bit. You want an intake closing at around 40-45* to manage the compression. But then you end up with an engine that makes great power above 4K, and is a bit of a dog below that. I don't know where you live, but if you're at high altitude, it might work out.
.660 is a lot more lift than .550. If you install that much lift, you'll have to remove the heads to clay the pistons.
Just some thoughts.
What kind of lifters? Solid, or hydraulic? There's no way you're going to reliably get a hydraulic cam to 6,700 rpm's. You'll get valve float long before that. A solid lifter cam can run to 8-9K rpm's. Depending on the rest of the valve train, of course. But then you have to be carefull about losing your low end torque.
Roller cam? If not, pay special attention to break in, zinc content of your oil, valve springs for break in, etc. flat tappet cams are getting tricky these days.
That appears to be a stock block. Fortunatly, you have a main cap girdle. But don't try any big power adders. The block can't take it. A little N2 once in a while is probably OK. But big shots over and over is asking for an explosion. Especially if your spinning close to 7K.
11.6:1 is not very pump gas friendly. A huge cam with a lot of overlap will calm that down a bit. You want an intake closing at around 40-45* to manage the compression. But then you end up with an engine that makes great power above 4K, and is a bit of a dog below that. I don't know where you live, but if you're at high altitude, it might work out.
.660 is a lot more lift than .550. If you install that much lift, you'll have to remove the heads to clay the pistons.
Just some thoughts.
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