[dbiggs]

Most Pontiac cams had valve lifts of around .407" -- so when you go to a .488" lift, you should check for coil bind.

How do you check coil bind?

[amcmike]

Originally Posted by lust4speed

Most Pontiac cams had valve lifts of around .407" -- so when you go to a .488" lift, you should check for coil bind.

Our 2+2 went a corrected 13.05 at 105.58 MPH in the HPP shootout (September 2007). The weight was 4,488 pounds and we were running on 87 octane pump gas - not too bad at all for the 4802 cam.

That was with a 455, right?

[dbiggs]

FWIW The only guys who actually ran fast with that cam in a 400 needed a minimum rear gear of 3.73 and a converter of 3000+ stall. Sixty8bird ?spl ran his 3800 lb car to 12.6X @106 so it can be a good performer. BUT he also ran the 1.65 rockers on it which makes it run like an even bigger cam.. He ran the Hughes 3000 converter with 3.73's and relatively short 50 series tires. JD

Not looking to go fast...just want a street cruiser that sounds good and has enough vacuum and a decent idle.

[baron_]

so what springs are people recommending?

[lust4speed]

Originally Posted by amcmike

That was with a 455, right?

No, the original 421 block (and crank) is in the car. Right now we have the #62 heads (76cc) and 24cc dished TRW pistons. Compression is 9.1:1, and we are running HS 1.65 rockers.

That is interesting about Summit -- the replacement 2802 cam and lifters are still unopened from when they sent me the replacements. I'll give them a call on Monday and see if they will be nice to me also. After the second 2802 went flat, I wasn't about to install the third one. Way too much work and expense cleaning everything and replacing bearings. I went with the 60919 with Rhoads and it has been thousands of miles and things are perfect with the cam.

I took the 2+2 to the dragstrip last weekend for day #2 of Summit after breaking the drag car. I had leaned out the jetting (using an A/F meter) in an attempt to help the low fuel mileage we were getting. The good news is the fuel mileage came way up, the bad news is it was way too lean uncapped and ran slower than with the 2802 cam. I had set the carb up at my 3,000' elevation through the mufflers -- worked terrible uncapped at the tracks 1,200' elevation. I didn't want to hurt the engine so cut the day short.

[71 Ventura II]

Originally Posted by dbiggs

Not looking to go fast...just want a street cruiser that sounds good and has enough vacuum and a decent idle.

Honestly, if your looking for a cam that will provide strong vacuum and have a cool factory muscle car sound the Crower #69016 is hard to beat. I ran this cam myself and even with 1.65 rockers it pulled a solid 15 hg of vacuum at idle. It will work great with 9.0-1 engine and pull very hard to 5600-5800 rpm. BUT there are many reasons to run a slightly smaller cam and explore tighter LSA cams to achieve the lowend your going to need. It's all in the combination through out the driveline. Good luck! JD

[69Customs]

I just bought a 2802 from Summit last week. Is there anyway to check the lobe hardness? I imagine its a case hardening? Does anyone know what it should be?