Dream 400
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 141
Likes: 0
From: Muskegon Mi
Dream 400
Hey guy's, here's my plan. I wanna get a 400 block, offset grind the crank, use Dodge small block rods, Chev!@@#y 383 pistons for a 6" rod. now I did the math, and this all adds up right, pistons, .010 in the hole, and 427 inches with a .060 over bore, any ideas on heads? I think I'll go with a Comp xe268, Edelbrock intake, and 750 Thunder series off road carb, also how can I i.d. a 400 easily? Thanks guys.
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
A 351M block is the same as a 400. Since you are going to replace the pistons and rods, all you need is a 400 crank. Just stay away from 1977 MCC blocks.
The only way to know that you have a 400 crank without removing the oil pan is to measure the stroke through the spark plug hole.
I have seen similar stroking schemes using 240 I6 Rods. I don't know if your idea is better. It depends on how much work has to be done to the rods and pins to get it all together.
Are those flattop pistons? You will need valve relief flycut into them no matter what kind of pistons they are. I came up with 10.49:1 CR with 78.4cc heads and 3cc valve relief.
The Dynamic Compression Ratio with that cam is 8.75:1. That is too high for pump fuel even with quench and that cam. I have that cam with 60 degrees ABDC IVC, you need at least 66 degrees ABDC IVC.
The only way to know that you have a 400 crank without removing the oil pan is to measure the stroke through the spark plug hole.
I have seen similar stroking schemes using 240 I6 Rods. I don't know if your idea is better. It depends on how much work has to be done to the rods and pins to get it all together.
Are those flattop pistons? You will need valve relief flycut into them no matter what kind of pistons they are. I came up with 10.49:1 CR with 78.4cc heads and 3cc valve relief.
The Dynamic Compression Ratio with that cam is 8.75:1. That is too high for pump fuel even with quench and that cam. I have that cam with 60 degrees ABDC IVC, you need at least 66 degrees ABDC IVC.
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 141
Likes: 0
From: Muskegon Mi
I came accrossed this scheme a few years back in a Muscle mustangs and fast fords article about a budget windsor stroker. It was available through P.A.W., they turned the mains down and machined the front of the crank to work in a windsor block, but I figuer in a actual 400 it should be fine, the also bushed the Dodge rods to chevy pin size. What about heads though? can I adapt aftermarket Windsor heads? I know the opposite is true i.e. C/M heads on a windsor, and what cam would be good, cuz I'm thinking like 6000 rpm max here, thanks for the info though
Posting Guru
Joined: Dec 2002
Posts: 2,003
Likes: 2
From: chicago burbs
you can use factory cast iron 4V Cleveland heads or any alloy replacements. then you'd need to use spacer plates between the heads and the Cleveland 4V intake of your choice. there are "port stuffers" and matching intakes that reduce the cavernous volume of the 4V C ports, or "Yates" heads and intakes. these would also require spacers and port matching for use on an M/400. a windsor style intake could be adapted if you want to run a fuel injection system? to answer your question though, sure you can adapt W heads. you'd have to do a coolant passage re-route, the opposite of the Clevor modification. but why? W heads are at a disadvantage to C heads because they don't have canted valves. Jon Kaase has some canted valve "small block" heads that just came out recently, they are the only W style heads i would consider adapting. valve covers are proprietary and pushrod length would have to be measured and custom made, no big deal. http://www.jonkaaseracingengines.com...ock_ford_.html
Last edited by grclark351; May 30, 2004 at 11:19 PM.
Thread
Thread Starter
Forum
Replies
Last Post
