Recommend a cam for my car
#1
Recommend a cam for my car
Hello I have an 89 Camaro RS parts car with a 305 TBI and T5.i am going to swap the motor and trans into another car. I am pulling the TBI and installing a carb. Which cam would you recommend for a dual purpose Street/Strip car.
#2
Member
Re: Recommend a cam for my car
U need to provide some info.
1-what type of cam do u have and want? Hyd roller? Flat tappet?
2-what is your compression ratio? Stock? Modified? Compression test/pressure?
3-what is your exhaust system set up? Cat(s)? Single pipe? Dual pipe? Headers? Long tube or short tube?
4-how many miles street use? How often drag raced? Road/circuit raced?
We can only help u as much as u help us.
1-what type of cam do u have and want? Hyd roller? Flat tappet?
2-what is your compression ratio? Stock? Modified? Compression test/pressure?
3-what is your exhaust system set up? Cat(s)? Single pipe? Dual pipe? Headers? Long tube or short tube?
4-how many miles street use? How often drag raced? Road/circuit raced?
We can only help u as much as u help us.
#3
Re: Recommend a cam for my car
I'm assuming that it has a roller in it now. It's bone stock but will be changing the exhaust to true 2.5 duals with shorty headers.. Mostly street cruiser with some 1/8 mile drags. It doesn't have to pass any emissions testing or anything like that. I just want a car I can take out and have some fun with.
#4
Member
Re: Recommend a cam for my car
Reads like u have the TBI 305 motor which was an L03 with only 170hp. Im finding the L03 had something like 8.6 compression - maybe only 8.5 actual. That means it likes a short cam. Problem is there are very few short roller cams other than stock cams. U can shop for yourself but u what something less than 270 degrees full duration and more like 265 degrees full duration with lobe separation angle at 110 degrees. U need extra duration on the exhaust until u install the full duals then a single pattern cam would make more sense. I really like comps XR264HR for your car and no larger. Maybe step down to the comp XR258HR. But u will need better valve springs for both those cams.
Hope this helps and good luck.
Hope this helps and good luck.
#5
Re: Recommend a cam for my car
Thanks CardoO I will check into the como cam XR264. I'll probably end up building a bigger motor later on down the road but this will get me started.
#6
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: Recommend a cam for my car
L03 has 9:3 compression. Get a stock L98 or Lt1 cam it will be a good bump in power and work with the factory heads without changing springs or anything. Those crappy heads aren't gona really breathe after 4500 rpm anyhow so why over-cam it.
Last edited by dmccain; 05-25-2016 at 01:53 PM.
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#9
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Re: Recommend a cam for my car
Not a good choice for an LO3. See the above. That cam is .510" valve lift. You will absolutely need head work to run it.
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