1989 2.8L firebird cam??
solar-eclipse
10-25-2007, 07:08 PM
im looking for a new performance cam for my friends 2.8L firebird... its a 89, where could i find one?? i hope to give it to him on his birthday.. october 29th.
1986Z28
10-25-2007, 11:31 PM
comp cams available through summit racing 16-233-4. youll also need lifters 802-12, valve spring 980-12 and possibly keepers and retainers
MrPbody
10-27-2007, 10:36 AM
The Comp offering looks okay. Too bad you don't have a bit more time. Maybe you could give him a gift certificate for a Comp cam, and have them grind you up an XE256H for the little 6.
As for the springs, we use small block "performance" springs in the 2.8/3.1 iron heads with a mild cam. They "drop in", and cost very little (about $2 each). Be sure to use the stamped shield under the spring, or it will "dance". What's commonly refered to as the "Z/28" spring.
Another VERY good choice is Melling MTC-5. It sports a little more duration than the Comp, but not quite as much lift. In a 3.1, it makes GREAT power to about 5,100 RPM.
Comp also makes "Magnum" rockers, in both 1.5 and 1.6 ratio for the little 6. 1.5s with the Comp cam, 1.6s with the Melling, and you'll get as much from the cam as it can offer. NOTE: SBC rockers DO NOT FIT, even though they appear the same, they're "standard" and the 60 degree V6s are "metric" (dimensionally).
Jim
As for the springs, we use small block "performance" springs in the 2.8/3.1 iron heads with a mild cam. They "drop in", and cost very little (about $2 each). Be sure to use the stamped shield under the spring, or it will "dance". What's commonly refered to as the "Z/28" spring.
Another VERY good choice is Melling MTC-5. It sports a little more duration than the Comp, but not quite as much lift. In a 3.1, it makes GREAT power to about 5,100 RPM.
Comp also makes "Magnum" rockers, in both 1.5 and 1.6 ratio for the little 6. 1.5s with the Comp cam, 1.6s with the Melling, and you'll get as much from the cam as it can offer. NOTE: SBC rockers DO NOT FIT, even though they appear the same, they're "standard" and the 60 degree V6s are "metric" (dimensionally).
Jim
vortecman
11-14-2007, 05:19 PM
whats the most power you can get out of a N/A 2.8? (swapping heads & cams and such)
solar-eclipse
11-14-2007, 08:15 PM
damn man idn, prolly about 155 at the wheels, not alot... maybe not even that.
vortecman
11-14-2007, 08:22 PM
well, those guys up there acted like it was a popular thing to mod these cars, so i thought they might be putting up some respectable numbers. i'd call 155 RWHP respectable though... i have one of those old cars, but it probablly wouldn't hold up to an aggressive cam. i've thought about getting a new 2.8 put in it to save gas.
solar-eclipse
11-14-2007, 08:24 PM
Ha, the 2.8 is the worst engine choice my man... It is not a good modding car, there is almost no aftermarket, the engine is a down right dog.. Do you have one??? if so pm me
vortecman
11-14-2007, 08:31 PM
no, but it would be cheap! (vs a 3.4 swap). i need a vehicle that would get better MPGs than my truck. and i already have this old car....
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