cam lifters & push rods 98 3.1 lumina

[steve67]

hi wondering if any one can help we are using this car for circle track spectators race we called summit to prchace a cam & lifter kit they recomended a flat tappet cam part# 16-233-4 the problem i am having is the push rods are to short & stock timing set wont fit on cam one guy told me to use 2.8 ho push rods is this correct & also any info on getting more hp will the 3.4 top end fit on 3.1 and if so what years & hp gang any help & tips would be appreciated thanx steve

[ForcedFirebird]

You must have ordered the stuff for a 3.1 RWD (iron heads), where you have a 3100. Your pushrods should have been two different lengths, and I believe you have a roller cam (someone will correct me if I'm wrong).

Yes 3400 heads will fit on your car, as will 3500 heads, but 3100 and 3400 heads after 2000 will give you some gain from bigger ports and valves over your current heads. You will need the LIM to match and get a 3500 UIM/plenum even if you use the "big port" 3100/3400 heads if you can.

There was a guy on here not to long ago that also used a FWD 660 for racing, we gave him the same advice.

[steve67]

cam lifters & push rods

so your saying after 2000 3400 top end is better and will work and what do you recomend for a cam also what does lim & uim stand for & what do you recomend for headers thanx for the advice steve

[ForcedFirebird]

Upper Intake Manifold, Lower Intake Manifold. Yes the 3400 and 3100 top ends are the same, and better, after 2000.

There are cams offered on the store here.

Again you have a FWD, and I'm not that fimiliar with with the aftermarket for you, I'm building my own turbo headers to fit 3500 heads on a 3.4RWD Camaro block.

[bszopi]

How many times are you going to post this question? This is the third time! Please keep it all in on post. Your original post is in the Pushrod Performance section, so please continue the thread there.