thats what ill do man hopefully it dont take too long being on a budget and all haha

 

The only difference between a 351M and a 400 is the crank and the pistons. You have to replace the pistons anyway, so why not find a 400 crank and then buy the right pistons for it?

Tim Meyer might have a crank, and he certainly has the machine shop and necessary knowledge to build you a 400. He did mine.

 

sweet man im finding new cranks online from 250 to 300 bucks so not bad for a new one

 

There's something else I forgot to tell you. The 335 Series engines have a poorly-designed oiling system, and the oil pressure at idle on most of them gets down to 10 psi or so. But there is an easy fix for that, as described here: Oiling System Mod's - ???Gary's Garagemahal.

Note that Tim Meyer is the source of that info. He's the 335 Series guru, globally. In fact, he makes a new Cleveland block in aluminum, with a compacted-graphite block to come soon. And, he makes intake manifolds, and, and, .... In short, he is THE MAN on these engines.

So, you can approach this one of several ways. If you can find a machine shop that you trust to do the machine work, including making the oiling system mod's, you can go that way.

But my machine shop in Tulsa would not do them, so I did them. And if you know what you are doing you can as well. And then assemble the engine.

Or, talk to Tim and then send him your old engine and have him do the machine work, do the mod's, and assemble it. Along the way you can talk to him about the cam, intake, etc and he can advise you - if you buy from him.

 

whats the best way to get ahold of him ? That link im assuming

 

Go to his site and call him. You may have to leave a message but tell him you are wanting to discuss having him build a 400 for you. He gets lots of calls wanting free advice, but he's running a business, not a support center. He will give advice if you buy your parts from him.

 

Well thats awesome thank yall

 

the 351m/400 is a dog! Either get a 351C or early (pre 1972 400) or better yet stuff a slightly built 429/460 (1970/71 best two years) The 385 series engines last longer. are more trouble free. lot more parts and goodies available. have way more torque even in stock form. If you do go with 429/460 remember try and be semi-conservative as far as HP and torque or you will twist the factory driveshafts.

 

WRONG! My 400 made 384 HP and 500 ft-lbs on Tim's dyno. And I went with a very mild cam to get low-end torque, not HP. Tim said it would have been over 500 HP with a bigger cam.

 

hahaha well im gonna get everything cleaned up and see if its worth doing a 400 or just keep the 351

 

stock 70/71 429/460 is 385 HP torque exceeded 500.Lincoln motor was little less at 365/500. Reasonable amount of money spent on a 385 series 510HP and 700lbs torque. 351W is a very good engine to custom build. Did 1 about 15 years ago spent about $5K and ended up with 624HP and 778 lbs. torque. that was an extreme build for a capri I was drag racing for my auto machine shop at the time.

 

No doubt a big block can be built to make more power. But he already has the block, heads, everything will fit up and work with what he has, he does not need to buy another engine and do a engine swap. He is just rebuilding what he has, and with a very small effort, can get large power gains if he builds the aftermarket 400.

 

Yup. The 335 Series engines have much larger intake and exhaust ports than a Windsor, and slightly longer stroke than a 460. So they make really good low-end torque if properly built. Tim has the pistons to get any compression ratio you want in a 400, so there's no reason to go to a big block if you aren't needing the extra power the additional cubes bring. That keeps the cost and complexity down.

 

So as it sits my block looks pretty damn good. So im gonna hot tank my heads and block and rebuild this 351. But my question now. Yes i know alot of questions lol but I looking at doing a different ratio rocker arm. Has anyone done that ? What all needs to be changed if its worth it. I was also looking into converting to hydraulic roller lifters instead of the flat tappet. Is it as easy as switching lifters and cam ? And last I wanna do a more aggressive cam. I have a 4bbl holley 600cfm and weiand 4bbl intake. So im not completely stock

 

If you are not going to put a 400 crank in it, then I would leave it stock. The 4bbl and intake will be a nice ugrade, but no fancy rocker arms or roller lifters are going to help, total waste of money there. How much money would the 400 conversion be? If you have the money to spend on that other stuff, I would forget that and spend the money where it will make a difference.