cam timing

explicitone · 04-22-2002, 07:14 PM

I just picked up the frpp adj. timing chain set . what do you guys think the best setting would be for stock cam and head combo.
THANX FOR ANY HELP

89 ATI · 04-22-2002, 09:17 PM

straight up

PKRWUD · 04-22-2002, 09:44 PM

Agreed.

Take care,
-Chris

explicitone · 04-22-2002, 09:59 PM

thanks guys

sn95gt19 · 04-23-2002, 12:39 AM

i had a question that kind of went along with his so i didnt want to post another question.... my question is basically the same except i have an e303 cam, roller rockers, edelbrock rpm heads, edelbrock rpm intake, mass air, throttlebody, cold air kit, 3.73, bored .030 over, long tubes, h pipe, 21/2 tailpipes, should i leave my timing straight up too, i have heard that advancing the cam or retarding it will make you have more low or upper rpm torque and power, i am looking for lots of low end torque. THANKS FOR YOUR INFO

PKRWUD · 04-23-2002, 09:32 AM

Generally speaking, advancing the valve timing (cam) brings the powerband into full effect at a lower rpm, and retarding the valve timing raises the rpms at which the powerband will peak.

The best way to find your optimum valve timing is to install a compression gauge in one of the cylinders after bolting down the timing chain, and crank the engine over 6 or 7 times, and write down the compression. Next, back off the cam gear, and change the valve timing, then check the compression again. Keep doing this until you reach the highest compression level, and this will be the best spot for your cam.

Don't forget, just like any other time you do a compression test, to block the throttle open.

Take care,
-Chris

04-22-2002, 07:14 PM	#1
explicitone Registered Member Join Date: Apr 2002 Location: racine ,wi Posts: 691	cam timing I just picked up the frpp adj. timing chain set . what do you guys think the best setting would be for stock cam and head combo. THANX FOR ANY HELP __________________ RUN IT STAIGHT AND RUN IT HARD ________ Novi 2000 60' 1.46 1/4 10.67 mph 126.5 _________

04-22-2002, 09:17 PM	#2
89 ATI Registered Member Join Date: Sep 2000 Location: Lafayette, Indiana Posts: 120	straight up __________________ 89 GT convertible, Kenny Brown level 5, Edelbrock performer, AFR 165's, Comp cams XE270HR, C&L 76, 24# inj, Crane 1.7's, 70mm BBK throttle body 298.2 hp 328.2 tq Mustang dyno "Our lady of blessed acceleration don't fail me now" Elwood Blues

04-22-2002, 09:44 PM	#3
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Agreed. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

04-22-2002, 09:59 PM	#4
explicitone Registered Member Join Date: Apr 2002 Location: racine ,wi Posts: 691	thanks guys __________________ RUN IT STAIGHT AND RUN IT HARD ________ Novi 2000 60' 1.46 1/4 10.67 mph 126.5 _________

04-23-2002, 09:32 AM	#6
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Generally speaking, advancing the valve timing (cam) brings the powerband into full effect at a lower rpm, and retarding the valve timing raises the rpms at which the powerband will peak. The best way to find your optimum valve timing is to install a compression gauge in one of the cylinders after bolting down the timing chain, and crank the engine over 6 or 7 times, and write down the compression. Next, back off the cam gear, and change the valve timing, then check the compression again. Keep doing this until you reach the highest compression level, and this will be the best spot for your cam. Don't forget, just like any other time you do a compression test, to block the throttle open. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

04-23-2002, 12:39 AM	#5
sn95gt19 motors done......woohooo Join Date: Mar 2002 Posts: 799	i had a question that kind of went along with his so i didnt want to post another question.... my question is basically the same except i have an e303 cam, roller rockers, edelbrock rpm heads, edelbrock rpm intake, mass air, throttlebody, cold air kit, 3.73, bored .030 over, long tubes, h pipe, 21/2 tailpipes, should i leave my timing straight up too, i have heard that advancing the cam or retarding it will make you have more low or upper rpm torque and power, i am looking for lots of low end torque. THANKS FOR YOUR INFO

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