BBC Headers for Camaro

[Brian]

What headers would you suggest for my combo?
467 BBC, 11.8:1, Dart Pro 1 325cc Heads Ported (to 335cc?), Edelbrock Victor Ram 2R Ported, 750 Holleys, Cam 256/266 @ .50 763/739 Lift 112LSA.
Going into a '67 Camaro. Engine was set up for a boat, hows it going to run in my car?

[Mike Stark]

The Hooker Super Comps would work well. 2 1/8" tubes with a 3 1/2" collector. Been runnign them for a long time with good success. the motor will probably run pretty well in your car. You should be able to get away with pump gas on occasion too.

[Brian]

Thanks Mike.
The regular 2-1/8" Super Comps will work, or do they make a different set for raised ports? Would you know if I need special motor mounts to modify the height or anything?
Brian

[Mike Stark]

They will fit on the taller heads. We have run everything from stock, to Dart, to Canfield with no problems.

[re]

I run a very similar set-up that you have( except 1050 dominator) with the Super Comps and have been 10.30's @ 130 @ 3750 lb Nova. The super comps ALMOST touch everything under the hood, but they do clear.

[Maximum Race Engines]

Brian-
11.8:1 and pump gas with that small of duration? ouch..I wouldn't go more than 11.1. As for the combination, I just feel you will make more poqer and torque at a more reasonable rpm with a smaller head, single four barrel deal. I would also tighten the lobe seperation up to a 110 with advance. Duration seems to be ok, could probably stand to be a bit more, lift seems huge. I just feel the operating range for something like this is going to be up there due to the small cubic inch. Have done many 10.8:1 460 inch motors single four, pump gas that make in upwards of 650-700hp and 600 ft lbs with less cam, compression and smaller heads. As for headers, I like the 2" x 3.5" super comps. They tend to build more torque through the range than the the bigger tube primary, but if you plan on spraying or upgradeing later on, then go with the bigger tube, no sense in buying twice.

[BrianB]

The lift specs on the cam in my first post were with 1.76 ratio rockers. I could switch to 1.70 ratio rockers, which would change the lift to .737/.714.
I also have an Ultradyne cam that specs out at:
255/264 @ .050 and .685/.670 lift with 1.70 rockers and 107 LS. I could run the 1.76 ratio rockers on this cam also.
Heads Flow:
........Int...Exh
.500 325 246
.600 360 268
.700 379 284
.750 382

[Maximum Race Engines]

Lift is not what I was concerned about too much, the duration @ .050" needs more. Ever do a compression test? get the engine hot, shut it off, pull the plugs, hold carb wide open, with the gauge in #1 and crank till the needle stops, usually about 10-12 revolutions. Do that in all 8. Also, Lobe separation is too wide. I would stick with 110, and go 4 degrees advance. Put it in on a 106. Lift seems ok, even with the 1.7 ratio. The cam that is in it now sounds more like it was for a boat given the low duration, wide lobe, real high lift. Typical of a marine performance camshaft. If it is together, throw it in and try it. Worry about changes later. Heads are on the big side and cam may not be suitable, but run it as is for now.

[BrianB]

Thanks for the help everyone.

Joe,
Yes, you are right on target with the boat application. You might want to take a second and read my first post. Basically I am not wanting to go out and spend a bunch of money on this engine; it will certainly be a compromise for a car. I built this engine for my boat a few years ago and now have the boat for sale. I haven't had any luck selling the boat so I am thinking of just taking the engine out and putting it in my car.
Yes, I've done a compression test on the engine before. The cylinders have 175 psi of cranking compression. For now I am just wanting to use the parts that I already have, with the possible exception of the tunnel ram. I may buy a single 4 manifold and new carb soon, and would probably switch cams sometime much later.
Thanks,
Brian