i just bought a new cam and lifters for 50.00 for my 86 iroc 305 tpi. its a crane powermax 114132. 210/216 440/454 114lsa. anyone using this cam in there 305 and what do you think about it. i'm doing the heads and intake also. what stall convertor would you guys recommend. also i have 3.23 gears , do you think i need 3.42 or 3.73's or will the 3.23's be fine. thanks for any input.

 

what are you doing to the intake?. that cam is a good cam for a 305. your gonna need some runners. and what heads are you thinking about?
a good stall would be around 200+ like a 2400. and a good tune. the gears will work. but some 3.42's won't hurt it.

 

If you're gonna do gears go with the 3.73's. There's not much point in going from 3.23's to 3.42's, that's only a .19 difference in ratio compared to .5 with 3.73's.

That cam is a good choice for a 305, makes good midrange.

For the convertor I'd look at something around 2200rpm stall or so.

 

I'll second the 3.73s. You'll be trading a bit of low end with that cam, so steeper gears will help you get out of the hole better.

Go with a 2200-2400 stall converter too.

A nice set of pocket ported and gasket matched heads with a D-shaped exhaust port will work great if you want to save some cash. If you've got the bucks the AFRs are the best head you can buy.

Stick with a long to medium length intake. A modified TPI setup is probably adequate for your combo.

 

for the intake, a accel base, as&m runners, ported plenum, stock throttle body. i was told i dont need a 52mm t-body. is this true. should i just port the intake or siamese it. as for heads , im still cant decide. ported stockers, world sr's, or maybe aluminum. the heads are the only thing i cant get a straight answer on. i'll go with the 373's and a 2400 stall. i am trading a guy a 58mm t-body for a set of slp 1 5/8 headers. the combos finally coming together i just wish i knew what heads to use. thanks for the replies.

 

The World S/R's stand for stock replacement. Basically it's an older GM casting that they added a few bells and whistles to, but they didn't change the port shape of anything like that so IMO you'd be better off with stockers (plus they're much cheaper). If you want aluminum, you might look at the aluminum L98 heads found on the 80's vettes. Pro Tompline also makes some really nice heads (iron or aluminum) that flow almost as well as AFR's (on the topend, but not low lift numbers, AFR blows them out of the water in that dept.). Also they're fairly cheap, IIRC $800 for the irons and about $950 or so for the aluminum...

 

i think im going to have the stock heads done (ported). is it necesary to go with the bigger valves on the 305.

 

not really, but get *** valves. not cheap ones.

 

Nope, not unless it's a race motor. The stock size valves will do just fine, but I would take wyclefsirocz's advice and get good valves.

 

thanks for all the replies. im going to keep the stock valve size in the heads. any recomendations on what valves to buy. what roller rockers do you guys like. im thinking about the comp. magnums or the pro magnums 1.52 or 1.60's. thanks again

 

manley valves are good, i have a set of there budget performance valvs installed in a set of L98 vette heads awaiting for more $$ so i can get more parts and install.

i also got a set of dual comp springs w/ matched retainers. i will be going with a set of 1.6 stamped rockers.

 

The Pro Magnums are really nice, and they're rebuildable too. The Magnum roller tips are good too, I've got them going on a motor I'm building up currently. If you do go with the 1.6's make sure you enlongate the pushrod hole so they don't touch. They make a Louis tool to do that, but you can do it yourself with a drill bit (5/16???).

 

I like the Manly valves too. Get the ones that have undercut stems. They flow better.

Bigger valves isn't really a solution, it's a crutch for bad airflow. A bigger valve actually represents a greater restriction to airflow at low lift and low RPM, which is why a lot of 2.02/1.60 motors never seem to be much on the street. I'd stick with the stock sizes and concentrate on flow.

I've used Crane Energizer aluminum roller rockers on several motors and am very happy with them. They hold up very well, and are fairly cheap compared to other roller rockers out there.