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With proper tuning, can I expect 400 HP?
Anyone else use Eddy's on a relatively stock motor?

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I really would like to do the 440source heads rather than the Eddy's, but, I'd have to send them to someone for cleanup/inspection before bolt on. Which everyone seems to recommend.

The eddy's you don't. So, toss up.

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I really would like to do the 440source heads rather than the Eddy's, but, I'd have to send them to someone for cleanup/inspection before bolt on. Which everyone seems to recommend.

The eddy's you don't. So, toss up. If there were a really reliable person here in KC I could trust with the 440source's, I'd probably go with them.

The cam, t-chain, headers I already have. I made a mistake on the cam, Its a comp XE274.

The 440 isn't apart yet, but I'm assuming the pistons are about .085 or so in the hole on a stock LP 70-440.

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I must stress this any aftermarket part should be inspected before bolting it on/in a motor. There was a thread just last we about the an eddy head ahving an issue that needed to be corrected from OTB. BE it the eddy or 440 source get it checked out. Heck you could always buy the head thorugh one of the engine builders on here have them inpected and shipped to you.

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I really would like to do the 440source heads rather than the Eddy's, but, I'd have to send them to someone for cleanup/inspection before bolt on. Which everyone seems to recommend.

The eddy's you don't. So, toss up. If there were a really reliable person here in KC I could trust with the 440source's, I'd probably go with them.

The cam, t-chain, headers I already have. I made a mistake on the cam, Its a comp XE274.

The 440 isn't apart yet, but I'm assuming the pistons are about .085 or so in the hole on a stock LP 70-440.

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I must stress this any aftermarket part should be inspected before bolting it on/in a motor. There was a thread just last we about the an eddy head ahving an issue that needed to be corrected from OTB. BE it the eddy or 440 source get it checked out. Heck you could always buy the head thorugh one of the engine builders on here have them inpected and shipped to you.

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don't assume anything is ready to go as sold .

Another thing you need to do if you are going to run manifolds is to put a gasket on the heads and make sure the gasket does not overhang the ports , then put the same gasket on the manifolds and make sure the openings are at least as big if not a little bigger than the gasket openings . I just did this and found the manifold ports as much as a 1/4" smaller than the gasket opening , especially the end ports.

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I have a stock 70-440 take out motor that is low miles and in excellent condition.

My thoughts are to keep the stock shortblock, except a 268XE Comp cam, a CH4B intake, 3310 holley, factory magnum manifolds, and stock Eddy heads with a true dual exhaust.

With proper tuning, can I expect 400 HP?

Anyone else use Eddy's on a relatively stock motor?

I do have a good set of headers also, but would prefer to use the manifolds.

All going in a 66 Coronet.

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I have a stock 70-440 take out motor that is low miles and in excellent condition.

My thoughts are to keep the stock shortblock, except a 268XE Comp cam, a CH4B intake, 3310 holley, factory magnum manifolds, and stock Eddy heads with a true dual exhaust.

With proper tuning, can I expect 400 HP?

Anyone else use Eddy's on a relatively stock motor?

I do have a good set of headers also, but would prefer to use the manifolds.

All going in a 66 Coronet.

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Yes - you can achieve 400 hp with what you plan without the headers. Make sure that it is a true 10:1 CR, maybe 10.2:1 when you are done and feed it with a good carb. It might also respond well to milling the divider or adding an open spacer. Test to know for sure.

Depending on weight, converter, gear and tire, you may or may not be able to get into the 12's.

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