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Old 02-16-2011, 06:29 AM   #1
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1989 GT Cam Choice

Hey everyone I am a new member and I wanted to say Hi before I ask a question. I'm looking to replace the Cam in my GT. First I wanted to Keep the Factory heads for now and factory intake for now. I wanted to start with the Cam and work my way out as money allows. (New Baby in the house) Right now I have a H-Pipe, American thunder Flows and Ford Racing shirties on the vehicle with 3:55 gears in the rear. I wanted to get a E303 or B303 cam but read Horror stores on them that sometimes they can never set the stall at lights. Im trying to get that sound out the car thats hard to explain kinad of like that old muscle car sound I guess it sounds like a erratic idle. I called the three cam companies and I was wondering if anyone has any info on these:
Comp Cam - 35-324-8, Lunati - 51014LUN, Crane Cams - 444221. I was told that the problem wit the E303 was that the Lobe seperation was cut on a 110 but all these are cut on a 112? One comapny said to change the rockers (Because the factory rockers are supposed to be 1.6 but actually 1.45) to 1.6 the other two said that the factory rockers are indeed 1.6. Any help would be great. I forgot would I have to replace the valve Springs?

Here is two youtube videos of the sound Im trying to get to.

YouTube - 1989 Mustang 5.0 Stock with E303 camshaft

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Old 02-16-2011, 07:36 PM   #2
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Re: 1989 GT Cam Choice

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Old 02-16-2011, 08:32 PM   #3
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Re: 1989 GT Cam Choice

ive never heard of oem being 1.45 im pretty sure they are 1.6 but anywho.... you may or may not have to adjust your idle..if your i.a.c. isnt too weak it shouldnt be an issue. it would be a good idea to swap for sum stronger valve springs if you got high miles on your motor. valve float isnt fun at all.

investing in an adjustable fuel pressure regulator wouldnt hurt either.

cam choice is totaly up to you. i run an e-cam with 1.7rr ..but lots ppl prefer dual pattern too. depending on how you wanna end up power wise and what you are gonna do with the car dictates cam choice. be honest with yourself though on budget and how you are gonna use the car...bigger isnt always better.

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racing aod, 2700 stall, 3.42 gears, ported e7, 308ci, 1.7rr, comp .560valve springs, gear drive, high dwell module, msd 6a & coil, bbk off road xpipe, mac cat back, 30lbs inj, pro-m 90mm, welded subframe connectors, boxed upper & lower trailing arms, spherical axle bushings, 255/50/16 tires, 255lph pump, 456hp
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