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Best Performance cam for all stock 87 SS #107175708/23/21 12:48 AM | |
B BT87SS New Member | |
OP BT87SS New Member B Joined: Nov 2015 Posts: 9 | Good evening! 87 SS,55 Belair |
Re: Best Performance cam for all stock 87 SS BT87SS#107175808/23/21 01:11 AM | |
86ttop 20+ Year Member | |
86ttop 20+ Year Member Joined: Dec 1999 Posts: 12,143 Likes: 5 | Jim, you should call the cam companies of your choices and get their input, good luck! Leo Paugh |
Re: Best Performance cam for all stock 87 SS BT87SS#107175908/23/21 02:00 AM | |
BadSS 20+ Year Member | |
BadSS 20+ Year Member Joined: May 2000 Posts: 2,117 Likes: 14 | I did 15-20 cam installs (at least 10 different cams) in the 305HOs (SS, Z-28, T/A) back in the 80s and early 90s. By far the best running with the stock 2000-ish rpm stall was a 205/215-112 Lunati and a custom grind 206/212-110 Comp. The biggest off the shelf cam that I would eventually end up installing was the 212/212-110 Comp 260. The last one I had personal experience with was still a few years ago and was a Comp 4x4 206/214-111 with 1.6:1 rockers in his L69 Z-28 (new springs and a mild pocket port clean up on the heads). My buddy and I were both extremely pleased with the outcome and it didn’t sound much different than stock. I always did before and after ETs with an accelerometer when I swapped cams, so the cams above really are what I know to be really nice performers in a stock SS with the stock stall speed. Be careful though because if the transmission has been rebuilt it's possible they replaced the HO converter that stalled around 2,000 rpm with one that stalls around 1200-1400 rpm. If that's the case, go with smaller of the cams above. If you go too big with the cam on a low stall speed converter, the car will be sluggish and can actually run slower in the quarter-mile than the stock cam. You'll definitely need to replace the timing chain with the mileage you have on the car and would recommend changing the valve springs to the Comp 981-16 springs for the cams I listed. From what I can gather, there is a problem now-a-days with the flat-tappet hydraulic lifters. Might want to check out Mike Jones Cams, http://jonescams.com , I found out recently that he's one of very few places that sells made in USA lifters. Original owner - 1985 SS black hardtop w/gray interior. Frame-on restoration in progress. 406 sleeper w/modified FIRST TPI, 1.875" headers and dual 3.5" Borla exhaust. TH400, Ford 9", anti-roll bar, and notched frame. Dropped 2", 18" wheels, and F/R disk brakes. 10-point cage w/swing-out bars, custom gauges, and custom, audiophile stereo system. |
Re: Best Performance cam for all stock 87 SS BadSS#107186308/30/21 03:47 AM | |
G Ghost Car Member | |
Ghost Car Member G Joined: Aug 2021 Posts: 40 | In 1994, I had my 84 SS engine rebuilt, balance and blue printed and had a Crane Compu Cam 2030 installed. This same cam was later offered in the late 1990s/early 2000s in the GM Performance Parts catalog. It advertised a 30 Hp/14 TQ gains in the 305. The specs were .423 I/.446 E, 282 I/ 297E. with stock 1.5 stamp rockers. You are ahead of the game in having a specialist rebuild your Q Jet Carb. I was disappointed in my engine rebuild until a year later when a local specialist rebuilt my Carb. When warm, it idles at 500-600 RPM. You hear the "lope" like an old school 327 or 350. and the tires chirp when shifting to 2nd gear. My car was ordered new by my Dad and it never idle low new and didn't chirp the tires in 2nd gear. |
Re: Best Performance cam for all stock 87 SS BT87SS#107192409/03/21 04:02 AM | |
M MAP 20+ Year Member | |
MAP 20+ Year Member M Joined: May 2002 Posts: 4,600 Likes: 5 | My experience with cams in the 305 aligns with BadSS's, although my experience is far less than his. The most important lesson I learned was that the big cork in that engine is the heads (!) Last edited by MAP; 09/03/21 04:03 AM. |
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