Has anybody ever done a 400 rebuild using a comp cams extreme energy 262 cam? It seems to me that it's the perfect balance for all-around performance. Just wondering if anyone has experience with this or an opinion.Thanks.

 

I have not used the XE262, but looked at it when I rebuilt my 400. I decided to go with the XE256 grind instead. I felt that the XE262 was designed for higher RPM than I would be running and wasn't as useful for a towing application. Just my opinion.

 

Hello- Welcome to FTE! I have moved your post to the specialized forum we have here for your question. Check out the list of tech forums we have here. There is a wealth of information and expertise here to help you. There are a number of links in my sig below to help you also. Have fun!

 

I also went with the XE256 instead of the XE262 because of that reason.

 

The XE 256 will give you lots of torque at low RPM. The XE262 will give you more performance at a higher RPM, but a little less torque at low RPM.

It all depends on the way you use your truck.

 

You could just buy the Engine that TMI has for sale. Check their website.

 

I was wondering about the cam selection because I plan on doing a build similar to the Hot Rod mag. one, only with a few changes. I am going to use an Edelbrock off-road thunder 650 carb.,performer 400 manifold,comp cams k-kit, Harland Sharp rollers, Hedman elite headers, and possibly the new Edelbrock 351c heads. I'm also thinking of replacing the 3:50 gears with 4:56. If I've done my homework correctly,with 35" tires, effective ratio would be 3:73. Any input would be greatly appreciated.

 

Take a look at Tim Meyer's motor. It is almost exactly like the Hot Rod magazine build. It has ported Aussie heads.

If you build your own, don't buy the Edelbrock heads. Get CHI or AFD heads.

 

What are AFD heads? I looked at the CHI heads on Tim Meyer's site,but he said Edelbrock seems to be better for cam lift of less than .550" and the xe262 has a lift of .513-int / .519-exh. Maybe I'm misunderstanding something here, I'm just not sure. The truck will be used 95% on road, speeds between 35-60 mph. Just want to have fun with it, not for all out racing or off-roading.

 

Air Flow Dynamics in Austrailia makes a 2V and a 4V aluminum heads.

http://www.airflowdynamics.com.au/

The CHI and AFD 2V heads are good to about 0.550" lift. The CHI-3V and AFD 4V heads need higher lift cams. I have the CHI-3V heads with 0.595" lift hydraulic roller cam. The Edelbrock heads are not any better than these 2V heads, yet are more expensive.

Also check www.powerheads.com for ported Aussie heads (iron).

 

danlee, thank you very much for all of the head info. Itook the time to print out all of the flow #'s so that I can compare side by side. The powerheads look pretty impressive too,although they are iron. Thanks again. I love this web-site, you guys are the best!!

 

Let me explain a little on our flow test on our web site. I originally wrote the page after flowing the 3V heads. At that time the low lift numbers were poor. Then CHI sent me a 2V head to test, much better low lifts. I did not go back and rewrite the article, which I should have. The CHI heads and the EB were close on the intake side, one would far better than the other at different lifts. But the important part is the exhaust side of the CHI heads. Usually we like to see a 75-80% Intake to Exhaust ratio, and that's were the EB fall short. Looks like EB copied the Cleveland heads to closley. I know we can match the EB head price with the CHI heads.

I am sorry if I have misled anyone with the flow test and it's results. I will give it attention as soon as I can.

 

Tim,

Any update on the stroker?

Dan

 

Tim, thanks for clearing that flow thing up for me. This is the kind of info. I need to keep from just throwing money at it (which is very budgeted). Much appreciated.

 

I recently reviewed the xe262 and the power band was impressive- enough to where I've been considering it. Still good torque numbers down low but great numbers mid and higher- like passing. I've been wondering about the low vs mid range for towing in that most of the pull will be in the mid to high 2k and up to mid 3k range right? From what I saw the 262 was very impressive from 2500 on up to the top end.
Then you also need to account for dynamic compression and fuel grade with cam selection which is still a bit beyond me. A guy here recently used the 262 and was thrilled- a little beefier motor I think?