What manifold should I use? I was thinking the weiand xcelerator or team G. It's single plane and matches my rpm band the best. Some people suggest a victor jr but it's 3500 to 8000 rpm and that just seems too high. I don't want to lose my 3000 to 4000 rpm torque

 

Your build falls right onto the crossover point between something like the Performer RPM big dual plane and a single plane like the Team G, Vic Jr, Holley Strip Dominator, Summit Single Plane, or Professional Products Hurricane.....and it would take back-to-back testing to actually find which would be the best for your particular build. Ignore whatever rpm range figures marketing has attached to each of those intakes, in reality there probably won't be 7hp/10ft.lbs difference between them all.

The Super Victor, Motown single plane, Super Hurricane, Victor E, and the Brodix HV1000 would all be too big.

Forget you ever even heard of the Edelbrock Torker or Torker II, and the Wieand Accelerator or Xcelerator.....these super short runner low plenum single plane intakes never place well at any dyno test......in fact IMCA Modified rules allow these because they don't really help make power but help level the playing field keeping HP down.

The shorter the runner length the worse the lower rpm torque is going to be, that is why the really tall single planes don't loose much of anything to a dual plane, its because they have long runners

This read might interest you:
19 Single-Plane Small-Block Chevy Intakes Test - Hot Rod Network

The Holley Strip Dominator #300-25, the Summit Single plane and the Professional Products Hurricane produce good torque because of their taller height and longer intake runners, slightly better than the slightly smaller Team G and Vic Jr.

In all reality, that 2600-6800 rpm power range for the cam is a lie.....talk to any honest cam grinder and you'll find it is impossible to spread a powerband much more than 3000-3300 rpm from start to finish.....so if your cam is good to 6800 rpm, it is really only going to start getting with the program until 3300-3500 rpm.

Comp Cams seems to have been the first to start lying about it in advertising the XE line of cams, some other companies are doing it now just to keep from loosing uninformed customers.

 

I agree with Eric. I would increase carb size to at least 850 unless your power is going to be near 500 hp.

also if you run that much split on duration with afr heads,consider 1.6:1 rockers on the intake side.

I bet that cam peaks just over 6k with that 104º LSA

 

I don't like that cam either. It's way too long. Something in the 240@.050 will be better suited I think and I'd use use the Victor 2975 with a 1" carb spacer.

 

Lots of guys with motors like yours run the Team G. If you want to run a singleplane; its a reputable piece, but for max performance, probably the 300-25 would be my choice.

Some very intelligent people are questioning your cam, take note of that. If you're stuck with it; I don't think its terrible, just not optimum. I WOULD however use light valve springs or reduced ratio rockers; along with a dedicated break-in oil (Joe Gibbs Driven BR30 or similar) and you MIGHT want to make sure you have the correct model of solid lifters for your application. Anything you can do to minimize risk.

If you cant get the motor to fire right away...stop and get that rectified, don't keep cranking this thing. Proper break-in procedure is an ABSOLUTE.

 

What's wrong with my cam?

 

How big of a rear tire do you have on this?

And; be honest with yourself here. Please don't hate me, we are trying to help.

You say weekend toy, street cruiser and some strip.
Are you looking for easy to drive on the street, lots of power in 1st and second gear for stoplight-to-stoplight fun?
Or
Are you looking for serious dragstrip and grudge match numbers here?

If all you want is an authoritative idle, and a killer stoplight cruiser...thats cool, just say so. We can shorten the cam up, make the powerband lower in the RPMs where you'll be able to use it more often. And it'll be okay for occasional bracket racing where consistency trumps all out numbers.

If you want a serious dragstrip/ grudge match motor - we can help with that too. But I think if you have a tall tire, 4.11 isn't enough rear gear at all.

As it sits, your cam has too much duration and a lot of "split" in duration, which AFR heads usually don't need.

 

Someone isn't telling the truth. Here is the same basic cam from Crane. Look at the compression ratio advised and the operating range. I don't see the cam you have chosen playing well with the 10.0:1 static compression ratio of your motor.

Crane solid flat tappet, part number 110981, Saturday Night Special
Grind number F-252/3574-2S-6
Performance usage, good midrange torque and HP, bracket racing; Pro, Pro ET, Super ET, etc., auto trans w/race converter, oval track; Late Model, Sportsman, I.M.C.A., etc., 3/8-1/2 mile.
11.5 to 12.5 compression ratio advised.
Operating Range 3800-7200
0.050" duration 252/260
Advertised duration 288/296
Lobe Separation Angle 106
Cam timing events 22/50/58/22
Intake lift @ 0.026" lash, 0.536"
Exhaust lift @ 0.026" lash, 0.554"

 

It has 26 inch tall tires and it's a relatively light car. 66 nova. I'm just shooting for a fast car that sounds good at idle. I own a couple of sportbikes which put everything to shame so not a lot of fast cars impress me but I also have my bone stock Honda Civic for commuting so streetability is not an issue for the nova. Thank you tech I understand. The duration seemed to not match the rest of the info on the cam.

 

Hot shakey?
210 cc AFR heads with best stainless valves
950 (or 850) cfm carb
Vic Jr intake
Solid roller 254º/258º with 1.6/1.5 shaft rockers (icl 106º-108º)
10.5:1 cr
Fender exit racing headers long step tubes 1 3/4 step 1 7/8 with long collectors
4.3:1 gear set with 4500 rpm stall(with 3 speed auto)
tie the sub frames
extended length traction bars with "J" bolts

should give all but the fastest bikes a run in the 1/4

This is a race car you can drive on the streets

similar build to my friends 67 Camaro with a 350 and victor jr heads
he runs high 10.8s/low 10.9s

you have better heads, a bigger engine and a lighter car, should run 10.7s

 

I 't have any big problem with the cam, I've built pump gas 383's for stout street use and varying amounts of fun weekend strip use with very similar cams and it works quite well....I just wanted you to be aware that the power range isn't going to start at that low 2600 rpm.

Even with your 3000 stall it may be a little sluggish of the line at a strip w/sticky tires, 60foot times in the 1.8 second range, but your light weight will mitigate this some, and it should run a real stout 112-114 mph or so 1/4 mile, and break into the 11's with slicks or drag radial or American Racer/Hoosier DOT legal dirt track tire.

Last one I did like this was 3600 lb '76 Nova, 3000 stall manual valve body TH-350, 4.11 gear, 26" x 8" American Racer Street Stock G60-15 IMCA Modified DOT legal tire . Engine was 388(.060" over), 9.2-1 compression, ported 487X smogger heads w/2.02" valves, Vic Jr #2975, Holley 750 Vacuum, 1-5/8 x 3" headers....cam was a custom picked out by Crower. 268/276° @.050"(not a typo!), .540/.557" lift, 105° lobe separation and installed on 100° intake centerline(Crower wanted it at 98° if it would still have enough valve to piston clearance).
It was a little slow of the line at the track, 1.85 second 60 foot, but came on strong after than and ran a big 110-111 mph on a 12.50 ET, big MPH for a mid 12's 3600 lb car. Had I had chance to lighten the car a bit and tune a few more weekends I'm sure it would have gotten very close to a 11 second pass.

Would rip a regular white letter 245/60 tire on the street at anything below 20 mph and would idle right at 950 rpm.

i'd put the cam you have in at 100-102° intake centerline.

 

Keep in mind the better head needs less duration to fill the cylinder. The head you mentioned is miles behind the AFR head and that may be the reason for the largish duration numbers.

 

I know, that's why Crower went so big with the duration, then had me install it advanced to close the intake as early as possible for mixture trapping(Dynamic compression).

In the OP's case, his bigger heads should run even better....252/260° duration @.050" is not exactly huge in a solid lifter cam, not really different than a hydraulic roller of 242/250°.

 

I hear ya.

It's interesting anyway.
My 410ci, 14:1 CR, with Dart Platinum Heads, 2925 intake, 750 carb, open headers, on VP 110 has only 241@.050 and .560 lift. It's making 625@7500.
It's speced for me by Mike Jones Cam designs.