old school tunnel ram and carbs question

[whitetop]

"72 Camaro with sbc and TR-1X tunnel ram. I made a mistake on the carbs. The 1850 are 4160 models. I thought you had the 4700 series 4150 model. I had a TR-1X and the carbs fit fine inline. Personally I think the carbs look like crap when they are sideways. Reminds me of ET's Head. Also was there not a cartoon character called erasor head?

http://img.villagephotos.com/p/2004-...2/File0044.jpg

[Belair62]

Whitetop....phone home

[whitetop]

[ QUOTE ]
Correct me if I am wrong,but I always heard that vacuum secondary carbs did not work on tunnel ram setups because the tunnel ram decreases the vacuum on the engine!I remember a long time ago that my brother had to change out his carbs to non vacuum secondaries in order to get it to run correctly.

[/ QUOTE ]

Was he possibly running too wild of a cam that produced no or little vacuum. Car Craft in the late '70's had a very extensive TR setup article for the street. All the pros who they interviewed recommended a VS carb. I think the jist of the article was for the street a VS only used as much gas as needed while a mechanical secondary gives you the gas whether you wanted it or not. I've also talked with many people who had cars like the Camaro posted above and asked them and it always came back to VS were best and that is what runs best on my car.

You have to remember we are talking street cars here with driveability as the goal. More show than go so to speak. Not a street/racecar. I was more concerned about my car restarting at a cruise and not popping/spitting etc. I am not concerned about the power.

[whitetop]

Chuck
The 600 vac sec carbs maybe alright for your application because you have 50+ more cubes than mine. I would try them and if they don't tune out right go with the 450's. A friend of mine who built a streetrod with a 350 TR had two 600's like your but later put on my 450's and liked them better. Of course his engine was no where near as radical as yours. I think his had 9 1/2:1 Compression. The 450's are not vac secondary but the motor seemed to like the smaller cfm.

Like Sam said you need to increase your gear ratio in the rear. You may have a bog/hesitation when leaving. I can't over emphasize enough if you want to run one of these on the street you need as much vacuum and torque as you can put into the combination. You will not beleive how much torque you will loose from running a TR. Remember these were designed for the strip with cars leaving at 6-8K rpm. My friend who has the street rod only has something like 3;73(?) also but he is running a 5 speed and had a very low gear placed into it for first.

[BBIGG BLOCK 396]

The car my brothr owned did have a pretty radical solid lift cam! That could be the reason he could not use the vacum sec. carbs.Wish I had some pics of it,it was a 55 chevy 2 door sedan,straight axle,m22 4 speed.That thing would fly,or at least it seemed like it would.I think I was about 12 when he had that thing,I used to love to go riding in it.Especially the way he drove,he only knew one thing and that was gas pedal to the floor.

Bobby

[JoeG]

Whitetop--Is your car up and running with that engine you showed???

[whitetop]

It was when I first got it. The engine is the pics is the same as when I got it componet wise. I had it rebuilt and I only changed the carbs and added an electric fuel pump and the balance tubes. I drove it for about 4 months and that when I got most of the kinks straightened out. But had serious issues with leaking brakes, leaking rear main seal and freeze plugs that were weeping etc.(it sat in the original owners parents house since late '70's) I have since tore it apart and it is currently getting the body work done and probably will be repainted later this year. I was trying to save the paint (endless lines, freak drops etc) but the original '70's metalflake was cracking way too much. So late last year I sent it to the body shop.
However I'm not updating the car at all. It will still have it's 15x4 and 15x10 Cragars, Hooker 4 into one sidepipes, sun gauges, crushed velevet interior etc. Everything on the car was chromed including the rear end, driveshaft, springs etc.

[JoeG]

Hope you post it when it's done--Luv that old 'skool' stuff- ----Didn't your car have some Lace-work in the paint--

[whitetop]

No lace but endless lines and freakdrops.

http://ourworld.cs.com/davamil/myhomepage/auto.html

[JoeG]

I remember I liked the way he kept the stang body basically stock---Are you gonna try to dupicate the paint??