408 Stroker build

[tailpilot]

Originally Posted by Texasdoc

I have the 195 heads on my 408. I don't recommend just buying them stock and slapping them on. Get a set from blykins on this site, or from a reputable builder. They will buy the heads bare, then build them correctly, checking everything. Ask me how I know this is important.

Once you pick out what you want, call blykins and tell him what you want in a cam. He will get you a custom grind that will match your heads and your intake.

Scat rotating is fine. You don't need the 205 heads for street use on a 408. You could go with the 205 if you are going up to 427 just to pound your chest. Anything you put in these light cars will be fast enough to kill you at any point when you forget what you are driving.

Decide on a block, rotating assembly, and heads. Then go to one of those online calculators to determine what type of piston (dished, flat, domed), what thickness head gasket you need, and what size combustion chamber to get you the compression ratio you want. I recommend 9.5-10.5 for the street. Any higher than that and you may need to find race gas.

I tried EFI and went back to carb. That was a total fiasco. I don't recommend the carb replacement systems. If you choose to go EFI, go with a multi port system. YMMV.

trying to locate blykins. tried a search with no luck

[jhv48]

His name is Brent Lykins.
Company name is Lykins Motorsports. I think.

[tailpilot]

Great!!! found it. I will be giving him a call. Look like from Texas doc, my plan of buying afr heads and bolting them on could be a bad choice.

[Three Peaks]

As said above, all depends on what you plan on doing with the car. Brent will steer you the right direction, so make it worth his while and purchase some of the parts he recommends from him.
My 393 stroker is very similar to what you are looking for in your 408. I used a Comp 294 Extreme Energy cam , Comp roller rockers/spring kit sized for the lift (important), Vic Junior heads, and a Scat 9000 rotating assembly. Weiand Stealth intake (clone of a Air Gap) Standard pressure oil pump and don't forget to get the correct rotation water pump for the belt configuration and accessories you plan to run. Don't ask me how I know this....
Ask Brent what he prefers in balance. I used a standard 28 oz balance on mine and everything worked out great and it runs like a beast. Very lumpy at idle, picks up power at around 2500 RPM and goes until I chicken out. However, in town driving is a little irritating in traffic. If I had it to do over, I would go with a slightly smaller cam like the Comp 282 or a custom grind and I would (and may still) go with fuel injection. The new Fitech system and the Holley are reputed to be incredible and pretty much self learning as long as you can swallow the up front cost.

Good luck with the build. The engine was my most enjoyable part of the build.

Bob

[tailpilot]

Originally Posted by Three Peaks

As said above, all depends on what you plan on doing with the car. Brent will steer you the right direction, so make it worth his while and purchase some of the parts he recommends from him.
My 393 stroker is very similar to what you are looking for in your 408. I used a Comp 294 Extreme Energy cam , Comp roller rockers/spring kit sized for the lift (important), Vic Junior heads, and a Scat 9000 rotating assembly. Weiand Stealth intake (clone of a Air Gap) Standard pressure oil pump and don't forget to get the correct rotation water pump for the belt configuration and accessories you plan to run. Don't ask me how I know this....
Ask Brent what he prefers in balance. I used a standard 28 oz balance on mine and everything worked out great and it runs like a beast. Very lumpy at idle, picks up power at around 2500 RPM and goes until I chicken out. However, in town driving is a little irritating in traffic. If I had it to do over, I would go with a slightly smaller cam like the Comp 282 or a custom grind and I would (and may still) go with fuel injection. The new Fitech system and the Holley are reputed to be incredible and pretty much self learning as long as you can swallow the up front cost.

Good luck with the build. The engine was my most enjoyable part of the build.

Bob

Thanks for the info, you answered one of the questions I was going to ask. Im going to use a cast crank and wondered about external or internal balancing. It too easy to spend money that in not needed unless you are hitting the track and build a high HP engine. Getting sucked into all the hype is very easy!!!

[tailpilot]

texasdoc...sent you a PM. Im in Keller also would love to see your cobra. Also, did you purchase the complete scatt rotating assembly or Crank, rods, pistons etc separate? Internal or external balanced?