What should i do? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**'70_402** · 01-25-2004, 07:52 PM

Hey, I am a new member and just would like to say I learn something every time I log on! thanks! but I have a question, I just bought a 1970 Chevy with factory air and buckets and console, and a 402! it runs great but it idles to smooth for my taste I want a little "lope" in it!! has anyone put a cam into a 402 and just really loved the way it performed? and should I go with solid or roller? (sorry if this one has been covered before on a previous post)

**'70_402** · 01-25-2004, 07:57 PM

here is a pic of the engine compartment.. if you guys have any sugestions just tell me!! i like other guys input!!!

zenish · 01-25-2004, 07:59 PM

i would put a hydrallic lifter cam in it if you can afford the extra gas.solid lifters have to be readjusted often.roller cams are expensive and MAY require machining of the block.

lukecp · 01-25-2004, 08:11 PM

A hydrualic flat tappet cam would be great. Low manintence, and requires no block machining or anythign. A roller cam and lifters for a small block can easily run over $500 alone, not to mention the block machining that may be required. You should be able to get a nice hydrualic cam and lifters for a little over $100

cdowns · 01-25-2004, 08:12 PM

depends on how many miles are on the engine if it's a high milage unit i'd say leave it alone putting a more aggressive cam in is just going to hasten it's demise

*1972C10* · 01-25-2004, 08:15 PM

Lunati

Comp

Crane

Puttin in a cam just to lope isnt the wisest idea im not a big block expert so i cant say wheter these cams will require a spring change but its always a good idea to upgrade the springs when changing to a perfomance cam

All these cams i posted a kinda mild and shouldnt require a stall convertor

*1972C10* · 01-25-2004, 08:19 PM

Yeah I agree with cdowns Its not wise to do modifcations to high mileage engines Just seems like it dont last long afterwards.

**'70_402** · 01-25-2004, 08:20 PM

the motor has about 2000 miles on a rebuild so it is really strong.
i had thought about new upper valvetrain....guess i will need to budget that in too... the list just grows and grows!

*1972C10* · 01-25-2004, 08:33 PM

Yeah cam it .. you got dish pistons or flat tops?

Still consider valve springs there too cheap to skip out on and then drop a valve.

Your rebuilder might have put a good spring it in already just be sure to check them out or upgrade them

dion · 01-25-2004, 11:13 PM

get the specs on what you have, pistons, heads, CR etc and call around and tell them what you want, they'll let you know what would be best for you..

I have a hydrualic flat tappet cam with a .550 lift, check out the videos.

oldtrucknut · 01-25-2004, 11:25 PM

Don't put much of a cam in it, you will lose driveability. Look for something that is suited for towing. It will give you a good rumble and add low to midrange power. You don't want anything more than that, trust me... been there done that.

gonebad2 · 01-25-2004, 11:26 PM

Do you have an automatic tranny and power brakes? Don't go too crazy with the lift and durration. Otherwise you can run into problems with insufficent vacuum for your tranny and brakes....Just a thought to keep in mind when you go shopping.

**'70_402** · 01-26-2004, 05:28 PM

Thanks for the input guys, i really appreciate it!! yes i had thought about the vacume issue... will consider that!

Thanks, Rick

01-25-2004, 07:52 PM	#1
'70_402 Senior Member Join Date: Dec 2003 Location: Pampa, Texas Posts: 1,553	What should i do? Hey, I am a new member and just would like to say I learn something every time I log on! thanks! but I have a question, I just bought a 1970 Chevy with factory air and buckets and console, and a 402! it runs great but it idles to smooth for my taste I want a little "lope" in it!! has anyone put a cam into a 402 and just really loved the way it performed? and should I go with solid or roller? (sorry if this one has been covered before on a previous post)

01-25-2004, 07:57 PM	#2
'70_402 Senior Member Join Date: Dec 2003 Location: Pampa, Texas Posts: 1,553	here is a pic of the engine compartment.. if you guys have any sugestions just tell me!! i like other guys input!!! Attached Images

01-25-2004, 08:11 PM	#4
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	A hydrualic flat tappet cam would be great. Low manintence, and requires no block machining or anythign. A roller cam and lifters for a small block can easily run over $500 alone, not to mention the block machining that may be required. You should be able to get a nice hydrualic cam and lifters for a little over $100 __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

01-25-2004, 08:12 PM	#5
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	depends on how many miles are on the engine if it's a high milage unit i'd say leave it alone putting a more aggressive cam in is just going to hasten it's demise __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

01-25-2004, 11:13 PM	#10
dion 72 Cheyenne Join Date: Oct 2001 Location: San Diego Posts: 2,086	get the specs on what you have, pistons, heads, CR etc and call around and tell them what you want, they'll let you know what would be best for you.. I have a hydrualic flat tappet cam with a .550 lift, check out the videos. __________________ Burnout Idle 1972Cheyenne 1966/67Stouts

01-25-2004, 07:59 PM	#3
zenish Registered User Join Date: Aug 2003 Location: stallings,nc Posts: 401	i would put a hydrallic lifter cam in it if you can afford the extra gas.solid lifters have to be readjusted often.roller cams are expensive and MAY require machining of the block.

01-25-2004, 08:15 PM	#6
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	Lunati Comp Crane Puttin in a cam just to lope isnt the wisest idea im not a big block expert so i cant say wheter these cams will require a spring change but its always a good idea to upgrade the springs when changing to a perfomance cam All these cams i posted a kinda mild and shouldnt require a stall convertor

01-25-2004, 08:19 PM	#7
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	Yeah I agree with cdowns Its not wise to do modifcations to high mileage engines Just seems like it dont last long afterwards.

01-25-2004, 08:20 PM	#8
'70_402 Senior Member Join Date: Dec 2003 Location: Pampa, Texas Posts: 1,553	the motor has about 2000 miles on a rebuild so it is really strong. i had thought about new upper valvetrain....guess i will need to budget that in too... the list just grows and grows!

01-25-2004, 08:33 PM	#9
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	Yeah cam it .. you got dish pistons or flat tops? Still consider valve springs there too cheap to skip out on and then drop a valve. Your rebuilder might have put a good spring it in already just be sure to check them out or upgrade them

01-25-2004, 11:25 PM	#11
oldtrucknut 67-72 truck surgeon Join Date: Jul 2003 Location: Indiana Posts: 155	Don't put much of a cam in it, you will lose driveability. Look for something that is suited for towing. It will give you a good rumble and add low to midrange power. You don't want anything more than that, trust me... been there done that. __________________ 1969 Chevy C10 1993 Toyota Camry LE 1999 Ford F250 Super Duty 4x4 diesel 2008 Dodge Charger Super Bee 1953 International R182

01-25-2004, 11:26 PM	#12
gonebad2 Merciless Butcher Join Date: Oct 2003 Location: CC Nevada Posts: 1,447	Do you have an automatic tranny and power brakes? Don't go too crazy with the lift and durration. Otherwise you can run into problems with insufficent vacuum for your tranny and brakes....Just a thought to keep in mind when you go shopping. __________________ Your Bought And Sold....I Got Your Soul! Last edited by gonebad2; 01-25-2004 at 11:28 PM.

01-26-2004, 05:28 PM	#13
'70_402 Senior Member Join Date: Dec 2003 Location: Pampa, Texas Posts: 1,553	Thanks for the input guys, i really appreciate it!! yes i had thought about the vacume issue... will consider that! Thanks, Rick



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