Im trying to deciede between these Comp Cam:

1. Part # CCA-CL12-230-3 Hydraulic Dur Adv 250/260 @.050 206/212 Lift .432/.444 110 LC

2. Part # CCA-CL12-205-2 Hydraulic
Dur Adv 252/252 @.050 206/206 Lift .425/.425 110 LC

the other componets consist of: 283 bore .080 over, cr(guess)8:0 -8:5 , 461 heads, 670 Holley Street Avenger, flattop piston 4 valve relief. Edelbrock RPM Intake,1-5/8 headers, 700r4, 3:73, weight 3200.


Can some please give me any advanges over the two cams or what can I expect.

wow, that sounds like my engine

Comp Cams XE268H, just my opinion

A 461 is a lot of head for a 283 unless the car is very light. If you really have 8to1 I would think twice about the heads. For a cam stay very mild.

Love them 283s. CHP mag built a similiar setup a couple years back and it made 265hp @5300rpm. It used a CC cam around the same specs and I believe they put bigger valves in a stock 283 type head. There slant was a fun motor with good gas mileage. In a car with good matching components it should run 14s and still get around 20mpg. The 206/212 duration cam makes up for a poor exh port and alot of the new grinds feature 5-6 more degrees exh duration.

i'd look at bumping up that cr, and get a solid cam to match... that 283 is gonna want to rev to make power. i run a 283 w/ 10.2:1 cr, and that motor is a whole lotta fun once you pull it past 2k rpms.

-or-

with a cr as low as 8-8.5:1, could you bolt on a blower or make it a nitrous motor?


just thinking aloud in the early morning.

keep in mind w/ 9.5:1 cr on flat tops, and a 4bbl, a 283 only made 220 hp from the factory, so lowering the cr is going to hurt quite a bit.

Heck, slap an old -097 Little Duntov solid cam in her and be done with it!! She will run above 7,000rpm all day!!

And I would install a set of the good 305HO 58 cc chambered heads that have the 1.84"/1.50" valves to up the CR. if it is that low..

Go over to Pat Kelley's great Dynamic Compression Ratio Calculator site that you can get to from his sig. and play around with your combination and use either 62 cc's or 64 cc's for the old -461 medium valved heads combustion chamber CR. as a start, plus, .025" piston down in the hole.

Also consider using the Fel-Pro 1094, .015" steel rubber coated shim head gaskets to raise the CR. a schosh too.

pdq67