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Selecting a cam for my 305

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Old Sep 16, 2014 | 12:59 AM
  #1  
89 Z/28's Avatar
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Car: Camaro
Engine: 305ci
Transmission: 700-R4
Axle/Gears: 3.42
Selecting a cam for my 305

Hi guys im looking to see what cam to install in my 305, my car is a daily driver but also sees some racing here and there. i am on a budget since im going to school. the mods done to it so far are: i removed the smog pump and the whole A/c system put a set of Heddman full-length long-tube headers into a 2 1/2 pipe with flowmasters, no cat.i got rid of my TBI and put a Eddy performer intake and Eddy 650cfm thunder avs carb. the 700-R4 has a shift kit and the rear is a posi with 3.91 gears. right now the two cams im looking at are Comps cam XR288HR http://www.compperformancegroupstore...Code=RLERCAMXE or a Elgin cam http://www.competitionproducts.com/E.../#.VBfRZ_ldXTo i want to get the comp one but its quite expensive considering i still need to get the valve spring retainers locks and pushrods. what do you guys think ?
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Old Sep 16, 2014 | 12:13 PM
  #2  
Caveman305's Avatar
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From: Newburg, MD
Car: '89 RS, '89 Iroc
Engine: L03, LB9
Transmission: 700r4, T5
Axle/Gears: 2.73, 3.08
Re: Selecting a cam for my 305

https://www.thirdgen.org/forums/tbi/...-ultimate.html

LT1 cam's are cheap and will get the job done, since you are already carbed you wont need to worry about tuning the car with a chip, should be straight forward
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Old Sep 16, 2014 | 12:15 PM
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Fast355's Avatar
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: Selecting a cam for my 305

Originally Posted by 89 Z/28
Hi guys im looking to see what cam to install in my 305, my car is a daily driver but also sees some racing here and there. i am on a budget since im going to school. the mods done to it so far are: i removed the smog pump and the whole A/c system put a set of Heddman full-length long-tube headers into a 2 1/2 pipe with flowmasters, no cat.i got rid of my TBI and put a Eddy performer intake and Eddy 650cfm thunder avs carb. the 700-R4 has a shift kit and the rear is a posi with 3.91 gears. right now the two cams im looking at are Comps cam XR288HR http://www.compperformancegroupstore...Code=RLERCAMXE or a Elgin cam http://www.competitionproducts.com/E.../#.VBfRZ_ldXTo i want to get the comp one but its quite expensive considering i still need to get the valve spring retainers locks and pushrods. what do you guys think ?
Both of those cams are way too big for a swirl port head 9.3:1 305. Your stock springs are too weak for even this cam but a set of Z/28 springs should be a nice upgrade.

http://www.competitionproducts.com/E...uctinfo/E1136/
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