gtxrt
Well-Known Member
it's your car do what you think is best. to go fast stop light to light you will need to hook it up else the 410 are a waste.
906 heads on a 413
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413Polara
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That’s a good point, I appreciate the input. This stuff is all fairly new to me so I’m always interested in hearing what some more experienced guys have to say.
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Those 413's will safely go to 5,000 rpm.
413Polara
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Hey guys, was putting on the edelbrock intake and of course the holes in the intake weren’t lining up with the head on one side when you have the other side started. Couple questions.
I pulled the valve cover to check the casting number and change the gaskets. Casting number appears to be 2408516-8. Anything anyone can tell me about the heads? I’m assuming they are 413 heads, I’ve also seen stuff saying they may be 361-383 heads?
Also when you have done your intake manifolds before have you used the fibre gaskets with the valley pan? Previous intake was installed with just the valley pan. I’m using a felpro kit, it said to install with gaskets as well but now I’m thinking they may be what’s pushing the manifold out of alignment.
Thanks guys!
I pulled the valve cover to check the casting number and change the gaskets. Casting number appears to be 2408516-8. Anything anyone can tell me about the heads? I’m assuming they are 413 heads, I’ve also seen stuff saying they may be 361-383 heads?
Also when you have done your intake manifolds before have you used the fibre gaskets with the valley pan? Previous intake was installed with just the valley pan. I’m using a felpro kit, it said to install with gaskets as well but now I’m thinking they may be what’s pushing the manifold out of alignment.
Thanks guys!
moparx
Well-Known Member
a good tuned T-quad will wake that thing right up !
it took me years to figure those things out, but today, that is the carb of my choice !
too bad there isn't a low profile 2x4 intake made that will accept 2 T-quads. as i want to keep my flat hood, a tunnel ram is unfortunately out.
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Just use one set under the aluminium intake, to insulate he aluminium from metal contact (electrolosis).
413Polara
Active Member
Tried one set. No dice, only way to get the holes lined up is with just the valley pan. Maybe an issue with the manifold, it would be my luck to get something defective.
Thunderdan
Well-Known Member
Might the current heads have been heavily surfaced in a previous rebuild? If so, that would certainly throw off bolt alignment. Machine shop would likely be the only way to tell...
413Polara
Active Member
They very well could have been. Bought some gasket material that’s thinner than the felpro gaskets I was using. A guy in the neighbourhood mentioned he’s had a similar issue using felpro gaskets on some of his 440 builds. Manifold bolted on well with just the valley pan so hopefully this solves it.
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