jfreeman74

Which engines have HR and which have HFT? My '85 305 has the HFT I believe. I am trying to find a cam that will work well with my engine. Some of the cams that I have seen recommended on the site are HR which will not work for me. What cam do you guys recommend for my setup? I am adding S/R Torquer 305 heads, 52mm Throttlebody, possibly 22# or 24# injectors and aftermarket base and runners.

YenkoZ28

85-86 TPI motors are FT and 87-92 TPI motors are roller. If I remember right your car actually came with a decent cam in 85. But something like a crane powermax 2040 FT cam would work great imho.

gmgod

comp xe 256 or 262.

jfreeman74

Right now I am leaning toward the XE256.

grumpyvette

you should read this

http://www.idavette.net/hib/camcon.htm

gmgod

If you want to spend the money on a cam that is optimal for the 305 (or anything for that matter) then yes the roller is the way to go. But if you have plans to ditch the 305 for a 350 in the future do you want to spend the money on another roller cam at that time? But keep in mind I'm a cheap bastard and will not spend any money on the LB9 longblock in my 92 car, just slowley gathering parts for a 350 for when the time comes to replace it.

jfreeman74

I'm kind of partial to my 305. I love the looks on the face of the guys at the track when they find out that there 350 just got beat by a 305. Priceless. I don't mind putting money into.

Twilightoptics

With the heads I'd go with the 262. It makes alot of torque and I'm using it in my 350. 305's seem to like alot of cam from what i've read.

Call comp and ask them.

gmgod

Well, if your gonna stick with it then the money spent should pay off. I guess in that case I would go roller.

Morley

The 52 mm TB is going to be overkill on a 305 as will the 24# injectors. Get a good set of used 22#'s and have them cleaned and flow matched. Save the money from the TB and brand new injectors and pick up a set of used 'Vette alum heads and have them ported or port yourself. and maybe have them milled to raise your comp from 9.5:1 to 10.0:1 or so.
A good flat tappet cam would be something in the 204-214 intake duration @.050 and 204-220 exhaust @.050. This should net you some very good torque numbers and keep it quite streetable too.
Hyd roller conversions are quite expensive, but if you are willing to spend the money, they will get you some decent power gains.

Yarnboy

Kick a s s times at the track man! I'm impressed..Were you running slicks? What 60'? Do you have a list of the times with each of the mods? 13.70's with those mods is really good man..Keep me informed on what you run with the upper motor work!

jfreeman74

Morley, I was thinking that I would need the 52mm to get more air. It seems like the intake is going to be my restriction once I get the new heads. I am thinking of going with the Edlebrock base and runners. I will probably go with the 22# injectors once I learn how to burn my own proms. My cam choices to this point have come from Engine Analyzer which has been very accurate for my car so far. It show that the 212/218 is the best choice to keep the low end torque that I have now. The 218/224 give about 10 more horses on the top end(above 4500RPM) but loses about 30 on the bottom end (2500RPM).

Yarnboy, thanks, my 60' times are between 1.8 and 1.9. I am running BFG Drags(best drag tires).