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Old 09-26-2004, 21:47   #1 (permalink)
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351 with 218cc CHI heads dyno run completed

Basic specs are:

351 crank and rods
cam dynamics solid cam 248@50 in/ex
11.2:1 compression
218cc CHI heads out of the box
2V wieand xcellerator
750dp carb

Run on Mobil synergy pump fuel. I was pretty much spot on with my conservative guestimation. The aim still is 300rwkw and can be achieved with this setup. In the end we found there was issues with the stock tanks 3/8th pickup. As it just couldn't supply the fuel. Hopefully a simple mod to the mallory 140 will be sufficient. Otherwise the fuel cell goes back in Exhaust system consisted of pacemaker 2V extractors, twin 2 1/2" system with a H pipe and triple flow mufflers (yes not straight throughs).

The only changes to the engine were the CHI heads. So do they CHI's perform? Hell yes!

351 with 218cc CHI's:



The same 351 with heavily ported 2V's:



Brenden
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Old 09-26-2004, 21:59   #2 (permalink)
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Re: 351 with 218cc CHI heads dyno run completed

Good Stuff Brenden,

Great figure, and there sounds to be a bit more in it with upgrades done.

On the rollers again with upgrades, or CHI Manifold?

Have you driven it yet?

What did it run up straight away, or was that the only power run?

It must feel heaps better to drive now.

Well Done!
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Old 09-26-2004, 22:22   #3 (permalink)
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Re: 351 with 218cc CHI heads dyno run completed

1st run up was 202rwkw @ 3/4 throttle. They idled it down, adjusted the timing, then did a 1st full run of 265rwkw (untuned). Tune was basically jets and timing. It needed less timing that a cast headed engine does

Next upgrades are:

a)Sort the tank issue (should be simple enough),
b)Bolt a CHI manifold on,
c)Might play with the exhaust system just to see if it'll go over 300rwkw. 1st I'll try straight through mufflers and then I'll try a twin 3" system with an X pipe.

Both of the above (a) and (b) should get it to the 300rwkw mark. (c) is just bonus points Then it's all done for the 351 and onto the 408. All I want from the 351 is 300rwkw daily driven. January next year will be more than likely when I'll do the last mods then continue heading to the strip to better my times. I should have enough their to get into the 11 sec bracket hopefully? Hopefully it does what it's supposed to

I drove it home it feels strong. As it felt very flat on Saturday @ Hallam Performance. I had a few issues to sort before I could put it on the rollers. I went through 3 dizzies and 1 universal joint.

I'm ithcing to get to the strip now and do the final touches. As it sits now will be how it'll be running @ Heathcote on the 20th Nov.

Max power was made @ 6600rpm. I'll be definately using Hallam Performance for more fine tuning as they always go to extra lengths to get you as much as possible.

Brenden
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Old 09-26-2004, 22:54   #4 (permalink)
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Re: 351 with 218cc CHI heads dyno run completed

Great numbers! Should give a few people a bit of a fright at the strip :D
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Old 09-26-2004, 23:13   #5 (permalink)
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Re: 351 with 218cc CHI heads dyno run completed

Now just put it into a Cortina and really make the most of it. It'll be good to see the difference between the Weiand and CHI intakes
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Old 09-26-2004, 23:26   #6 (permalink)
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Re: 351 with 218cc CHI heads dyno run completed

Quote:
Originally Posted by TD302
Now just put it into a Cortina and really make the most of it. It'll be good to see the difference between the Weiand and CHI intakes
Cortina would be nice but will never be possible due to engineering laws. Been there tried that. Biggest CI in a Cortina is 302CI.

John @ CHI says the intake alone should push it up to close enough to 300rwkw.

Brenden
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Old 09-26-2004, 23:35   #7 (permalink)
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Re: 351 with 218cc CHI heads dyno run completed

How much lift is on that cam? whats it Idle like?

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Old 09-26-2004, 23:42   #8 (permalink)
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Re: 351 with 218cc CHI heads dyno run completed

.580 (in) and 606 (ex). It's like a Crane F246. I personally don't think it's as good as an F246 but it does the job. Idles supposedly rough but it idles steady @ 1000rpm and 900rpm in gear.

It's the last camshaft on this page ->> http://www.cranecams.com.au/caminfo/fordcl7082.htm

Brenden
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Old 09-27-2004, 01:14   #9 (permalink)
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Re: 351 with 218cc CHI heads dyno run completed

Great numbers Brenden that is an impressive increase for just changing heads.
The CHI's obviously make a differance.
You have been waiting a long time for this day, it is well over due!
Calder is on Friday, any chance you will forgive them and run there?
Dropped my auto of to Mr Kewish today
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Old 09-27-2004, 01:24   #10 (permalink)
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Re: 351 with 218cc CHI heads dyno run completed

Quote:
Originally Posted by Work Horse
Great numbers Brenden that is an impressive increase for just changing heads.
The CHI's obviously make a differance.
You have been waiting a long time for this day, it is well over due!
Calder is on Friday, any chance you will forgive them and run there?
Dropped my auto of to Mr Kewish today
As you can tell by the date of the before dyno and after dyno sheets. The 227kw dyno run was done a few mths before the 1/4 pass. The 1/4 was done just after the car was done after the boys in blue took the car off the road. So it's almost been 2 years!

Although Calder is tempting and it is my day off. I doubt I'll have the $ to cover a calder trip. If they $ are there I may consider it as I may pay day is Thursday

If you see or talk to Dave before I do let him know the auto having no issues holding my power. I should really drop past myself but trying to get time between work and Hallam Performance etc isn't easy.

If Dave does you an auto like mine you've have no issues unless you go over 600hp. Thats what Dave tells me but in the next breath he also said they haven't had anyone with 600+hp to test it I'll give it a go though as the next toy engine will do 600hp easy enough.

Brenden
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