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 Gee's Bird 
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Joined: Wed Sep 03, 2014 8:59 pm
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Location: Barrie
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Post Re: Gee's Bird
Stuck the "643" grind L98 cam in my spare block tonight and measured all the specs.

Plugged all the specs of your motor stock & then with your FLowtech headers and the 2 different L98 cams I have. According to the simulations the 643 grind is the preferred cam for your combo showing 10 hp more than the other L98 cam.

Attached the Dyno2003 plots of stock vs with headers & 643 L98 cam.

Pretty healthy pick up in power!


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Stock vs 643.JPG
Stock vs 643.JPG [ 190 KiB | Viewed 9072 times ]
Fri Apr 27, 2018 9:08 pm
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Post Re: Gee's Bird
Sold text me. Can't see the hp on this. Mobile is a bit off I guess
Gee


Fri Apr 27, 2018 9:28 pm
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Location: Barrie
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Post Re: Gee's Bird
Gee wrote:
Sold text me. Can't see the hp on this. Mobile is a bit off I guess
Gee


206 hp stock vs 260 hp with headers and 643 L98 cam.


Fri Apr 27, 2018 9:35 pm
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Post Re: Gee's Bird
Hey I might be able to keep up to you a bit :lol:
Was the calculations done with the new ignition. I am guessing new fuel reg and a lot of tuning will need to be done.


Sat Apr 28, 2018 6:25 pm
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Post Re: Gee's Bird
Gee wrote:
Hey I might be able to keep up to you a bit :lol:
Was the calculations done with the new ignition. I am guessing new fuel reg and a lot of tuning will need to be done.


Dyno2003 simulations make the assumption that ignition/tune etc are optimized. They also tend to be fairly accurate when actual measurements are used, especially with regards to cam timing events which is why I spent the time the other night with my dial indicator and degree wheel measuring both L98 cams. Based on the limited info on the internet regarding the various L98 cam grinds I'd have put good money on the 773 L98 cam from my '91 being the one to use, however after measuring all the specs & running the simulations, turns out the 643 grind L98 cam should make around 10 more hp in the 305 than the 773.......go figure!

Hopefully these mods will give the 305 a little more pep!!


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643 vs 773.JPG
643 vs 773.JPG [ 192.65 KiB | Viewed 9066 times ]
Sun Apr 29, 2018 7:17 am
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Post Re: Gee's Bird
Thanks bud. She should be on the hook in the morning. Gonna have to look into the chips though.
Gee


Tue May 01, 2018 4:42 pm
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Post Re: Gee's Bird
Gee wrote:
Thanks bud. She should be on the hook in the morning. Gonna have to look into the chips though.
Gee


If your shop of choice isn't able to deal with the issue of dialing in the chip for you, I have the technology! Its just an issue of time with me....seems like every day off I have, there is something on my agenda!


Tue May 01, 2018 8:17 pm
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Post Re: Gee's Bird
Car is going out on the 14th. Thanks to Auto-God I now have a kick ass cam going in it. Getting it tuned will be the fun part. No more 5.slow litre more like 5.go. I will post more pic later on
Gee


Thu May 03, 2018 4:34 pm
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Post Re: Gee's Bird
In case you aren't excited enough already.....

https://www.thirdgen.org/forums/tbi/408 ... 8-cam.html

I'm curious to hear what it sounds like once its in.


Thu May 03, 2018 4:53 pm
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Post Re: Gee's Bird
This car is gonna keep up to you. :roll: At least on the 20th with all the stop signs
Thanks for the help and advice I owe you
Gee


Thu May 03, 2018 5:01 pm
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