302 SBC camshaft rec,

[econo racer]

I have a 302 SBC with 12/1 pistons-small journal short block. I have a new set of World Sportsman II heads 200 int, with 64 cc and 202-160 valves out of the box. I am not going to do any port work. Currently have to use what I have. better motor latter. the heads are set up for up to 600 solid lift. Going in a Nova. Current weight 3350 lbs with driver. Has 456 gears rurbo 350 and a 10 inch 4000 stall from TSI. foot braking only. Strip only. 1 3/4 headers. Not sure on intake yet. possibly use the Hurricane intake. Gonna run a solid cam for sure. What say you guys? What cam do you like best and any experience with the 302"

[Monza355]

I would say something like this - http://www.compcams.com/Company/CC/cam- ... d=262&sb=2

I would also use performer rpm intake. With a 4000 stall and a 302 cid you can not go to large on the cam if you want to make somewhat decent 60 ft’s and run fast at the strip.

Remember it’s all about the combination

[BILL-C]

Usually you are better off exploiting an engines inherent strengths instead of trying to fight against its weakness. That engine with those heads and proper solid cam has potential to make 480 + hp @ 7200 rpm . A 5500 rpm converter, 4.56 gear, short slicks,and a vic jr intake are a proven combination.

[user-17438]

I have a 302 SBC with 12/1 pistons-small journal short block. I have a new set of World Sportsman II heads 200 int, with 64 cc and 202-160 valves out of the box. I am not going to do any port work. Currently have to use what I have. better motor latter. the heads are set up for up to 600 solid lift. Going in a Nova. Current weight 3350 lbs with driver. Has 456 gears rurbo 350 and a 10 inch 4000 stall from TSI. foot braking only. Strip only. 1 3/4 headers. Not sure on intake yet. possibly use the Hurricane intake. Gonna run a solid cam for sure. What say you guys? What cam do you like best and any experience with the 302"

Does your budget allow a solid roller? i know i would be looking for a cam in the high 250s to mid 260s@.050 a ported hurricane will work well. i would want more gearing, cam and more stall but what i suggested should be good enough. if its a solid flat tappet there are many catalog grinds that are under 150 that will get where you need.

[cgarb]

https://www.speed-talk.com/forum/download/file.php?id=11468

I have this solid roller I would get rid of real reasonable. No issues with it, I raced it 1 season, it ran decent just would not MPH in my 377 very good. Made a lot of torque though. Might not be too terrible in a small engine. I work on a guys car that has about 40 years worth of racing parts throught his garage....most in decent shape. If you were to need lifters, springs and valves I could probably help out there also for a decent price. PM me if you are interested.

[KnightEngines]

Solid flat tappet will do the job with those heads & only 302 cubes to feed.
258/264 on 107 centres.
Vic jnr intake - the taller one if it'll fit.
750 carb

Strip the heads & blend the valve job into the bowl, turn & chambers - won't take long & is worthwile, you can do it yourself so long as you're not completely ham fisted.

You'll want a 5000 converter.

[F-BIRD'88]

https://www.summitracing.com/int/parts/ ... /overview/

With your limited converter and gears use this cam.

Basic Operating RPM Range: 2,500-6,000
Intake Duration at 050 inch Lift: 247
Exhaust Duration at 050 inch Lift: 251
Duration at 050 inch Lift: 247 int./251 exh.
Advertised Intake Duration: 275
Advertised Exhaust Duration: 279
Advertised Duration: 275 int./279 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.530 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.540 in.
Valve Lift with Factory Rocker Arm Ratio: 0.530 int./0.540 exh.
Lobe Separation (degrees): 108
Intake Valve Lash: 0.016 in.
Exhaust Valve Lash: 0.016 in.
Computer-Controlled Compatible: No
Grind Number: 01-TF72-TF73-08

You may want to experiment/ DragTest to see what the best installed cam phasing is for your car.

Everything you can do to the heads is a bonus. They are very good once correctly ported.


A bigger cam will want a LOT more engine rpm and a lot more gear and a custom built 5000-5500 rpm racing converter.

[blykins]

You need another torque converter, 5500 stall.

As for the camshaft: solid flat tappet, 248/258@ .050", 282/292 @ .020", 106 LSA/102 ICL, .558/.574 with 1.6RR.

A small displacement engine with a large-ish port volume head, combined with a poor intake/exhaust flow ratio will want some rather unusual specs.

[groberts101]

I would say something like this - http://www.compcams.com/Company/CC/cam- ... d=262&sb=2

I would also use performer rpm intake. With a 4000 stall and a 302 cid you can not go to large on the cam if you want to make somewhat decent 60 ft’s and run fast at the strip.

Remember it’s all about the combination

Assuming this OP doesn't want us to completely redesign his combo by tossing most of his existing parts into the corner and spend even more cash?.. I fully agree. That cam will easily run well past 7,000 and still make a decent midrange torque number to help get all those gears turning towards their sweet spot. Cash permitting.. I'd probably opt for a 1.6 ratio intake rocker as well.

[lefty o]

just me, but bullet has the old ultradyne grind solid flat tappet 250-262 106 .525"lift with a 1.6 rocker would be a powerhouse with those heads on a 302.

[econo racer]

I have a new old cam from Reed-I will try to post specs soon. Have Gold Crane 1.5 roller rockers. I have a set of 441 heads that have 74 cc combustion chambers with 165 int runners. 1,94 int. 1,50 ex. That might make better torque. I would like to shift 7000-7400 rpms. My goal is to run 8,0 8th mile-12.70s 1/4 mile. My slicks are 10/28 I also have a power shot NOS kit 125 hp. just to run in some T&T races. I am going to run on 930 HP E-85 fuel. I don;t think it will spin tires on a slick track with the 302.

[rfoll]

Use the sportsman II heads. Smog chamber sbc heads are terrible.

[steve cowan]

econo,
i threw together a large journal 327 sbc bottom end together while i am giving my 383 a freshen up,
the 327 is steel crank,stock rods and bolts and the old school TRW pistons,the block is junk and i honed it as best as possible,it has a lot of piston to bore bad ring seal etc,it is terrible but it pukes very little into the catch can.
i freshened up a set of cast dart 2 with a good vavle job,new comp springs 816 -16 i think cant remember right now,retainers etc
ported vic jrn,830 holley.
comp flat tappet 246-252 @ 0.050''
525 lift 1.6 rockers on the intake
110LSA in at 106 ICL
turbo 400 -5600 rpm conveter
4.1:1 rear gear
car weighs 3650 with me
12.80 @ 108
7.94 1/8 mile
got a big flatspot hessitation off the startline,i have played with pump shot,cams etc,i tried a rpm airgap,i ave run 850 demon carb, with more time i can tune it better and i am thinking of putting the smaller converter 4000rpm back in,some guys are probably thinking why go to all this trouble for this but it is my sort of fun,not really costing much as i have a few spare parts.
you should have no probs running those times or better
good luck and make it fun

[econo racer]

I cannot find the reed cam-maybe latter. I have a bullet cam 258-254 519-519 lift-106 cl I also have a ultra dyn-288-296 f 3630-I will find the reed before deciding-gonna have to use one of these-there all new old stock-with new solid lifters too.

[econo racer]

I cannot find the cam card for the UD cam-I googled the pt# f3630 won't use until I find specs. 288-296 dur-Lift etc?