Hi,

I am continuing to tear down my stock 1986 305 TPI, and getting ready to buy my upgrade parts.

A local parts shop recommended the Crane 2020 Cam as a good replacement for the stock cam, when used with the stock heads. I am looking for a bit of extra performance over stock, particularly on the low-end (stop light to stop light, the on-ramp, etc).


**** I also see this cam advertised on CompCams website: part number 12-388-4, grind number 252AH-12. Anyone have input on this one? Seems close to the above Crane cam.

Any thoughts? THANKS!

 

Interesting...I spoke to someone at CompCams, and they have also recommended the 12-388-4 cam for me. I have also called my local parts guy, who seems to be quite experienced in this area, and he is looking into it for me.

I will let you guys know what I find out, and what I end up buying. Again, if anyone has thoughts, please do share.

*** FYI, here is the Comp Cam that I am probably going to buy:
http://www.compcams.com/Company/CC/c...?csid=125&sb=0

 

what are the specs on the 12-388-4 ?

 

Specs from Comp Cams on the 12-388-4. You can view it better at this link though; http://www.compcams.com/Company/CC/c...?csid=125&sb=0

PART NO. 12-388-4
01 INTAKE MASTER 5200
02 EXHAUST MASTER 5211
03 ENGINE CS 252AH-12 (V-8 T.P.I.)
04 GRIND NUMBER CS 252AH-12 (V-8 T.P.I.)
INT EXH

05 HYDRAULIC Y/N YES 14 DUR @.050
206 212

INTAKE EXHAUST 15 LOBE LIFT
.2830 .2930

06 VALVE ADJUSTMENT HYD HYD 16 ROCKER RATIO .00
.00

07 MAX GROSS VALVE LIFT .425 .440
08 DUR @ .006 TAPPET LIFT 252 260 17 LOBE SEPARATI 112.0
18 ADVANCE 4

09 VALVE TIMING OPEN CLOSE 19 VALVE SPRINGS 981-16
@ .006 10 INT 18 54
11 EXH 66 14

12 THESE SPECS ARE FOR CAM(S) INSTALLED
@ 108.0 INTAKE CENTERLINE


Engine Family:Chevrolet 262-400 c.i. 8 cyl. 1955-1998 Description: Hydraulic-

Cam Family:Computer Controlled Hydraulic Flat Tappet Camshafts Specifications IntakeExhaustRPM Range: Valve Lash: Valve Timing: Duration: Lobe-Center Angle: Duration @ .050" Lift: Intake Centerline: Valve Lift: Lobe Lift: Valve Timing @ 0.006 Lift: ExhaustCloses14 ATDCOpens66 BBDC108 Intake 18 OpensBTDC54 ClosesABDC

 

I like Crane's 2030 for your car.

 

if i do my 305 im going to run cranes 114132 .440-.454 210/216 114 ..

 

I am going to purchase the Compcams 252ah-12, I have installed a 406 SBC with 113 heads into my Jeep with a stock 1987 camaro TPI and 24lb Ford SVO injectors. Looks like the best cam for the torque I am looking for and the range I drive in. It has nothing over 4500 though. I ran a simular 252ah-8 in a full size blazer with a HO305 out of an old rusted Trans-am and it pulled like the dickens even though the blazer is about as arrow dinamic as a bread box! Great milage but again not much for anything over 4500...If you are looking for torque and fuel economy in a daily driver I believe you will be very happy with 252...remember the TPI stands for Tuned port so you need run a cam with around 202 dur and 112-116 lsa for the proper tuning to occure or it will fall flat on it's face...my 2 cents...