383 stroker overheating

Ok, here is what I done today. I installed  an msd6A-with a distributor, Ran ok but did not have any power. I took the 750 off, installed the 650 holley. backed it out and smoked the tires. I did check the carb settings.vaccum and floats, was looking good. I was at jeg's today to get a one step up on the air horns on the 750. It came with the #28-I went to the 31. /the carb would still fall on it's face.Maybe should of went the other way. For some reason, the 650 double pump kicked in. Im still trying this as I can be wrong. But it is running better. Ran out of time, Monday is better. I sure appreaciate the info. I will check back as things change. thanks  

I found that michanical secondaries work better on motors with bigger cams. The biger the cam the less vacume motor produces.

Is the car an auto of standard?

Sound like the are going better. Just get the carb dialed in. The holly is not just a bolt on and go. It does take some adjusting. But they work good whan there dialed in. Just take your time. If you need help with the carb. Give me the part number and I'll look it on mon. after work.

If the holly is vaacume secondary then make sure they are opening up. That will make it fall flat on its face.  

did you ever figure this out?

i've got a 383 stroker as well and on hot days it runs at 220. at night time it usually sits around 160-180 (can't really tell with the stock gauge but it's somewhere in there).

I want it to run 160-180 all the time. help!  

What kind of car is it in?
What kind of compretion and heads are you running?
What kind of cooling system is in it? water pump, rad., fans, T-stat
Do you have a trans and oil cooler installed?
What kind of oil are you running?
What size is the carb?
Whats your timeing?
Are you running headers? If so long tube or shorties?

need to now these Q's.  

As i expressed earlier in this post i ran my 383 with a large single pass aluminum radiator with no fans and a 180 thermo that consistantly ran 182-185 degrees with a engine that produced approx 475hp.After all that you said you tried i would expect you to be in the 180 range. if none of these things have brought it to the 180 range maybe it's time to start thinking in a different light. Just as a thought did you degree the cam? it could be out second are you running a multi position timing chain and is it possible it is on the wrong keyway position ie advanced those could be two issues that could cause you problems.

Good luck!  

Yes as you posted before. You run an ALUMINUM head and an ALUMINUM rad. with no fans. Though you are running a 10.7:1 comp, ALUMINUM cools 10 times faster and 10 times better. Now what about motors that have thin wall and iron heads and maybe port work. regardless on what you do, thoughs motors are going to run hot buy nature. Therefore needing some mods. Some cars don't have grills and are bottom feeders therefore reducing the FLOW of air moveing across the radiator and reducing the cooling effect.

This is why finding out what they have first is important, then figure out what needs to be done to fix the problem. It could be something simple like its out of time or could be a cracked head. Thats why you ask.  

85_trans_am: I don't believe at anytime i discounted the avenues you are pursuing but the facts remain the points i made are every bit as relavent as the ones you made.He did state he's running world s/r iron heads and a three row aluninum rad. now the thing i would like to know is his comp ratio and weather he's running forged or hyper pistons. The reason i'm curious about the pistons is sometimes with hyper pistons people tend to make a mistake when filing the rings for the end gap especially the second ring, would be intrested if he knows what the rings were filed to per the bore size.  

I see what your saying and appoligise for coming at you the wrong way heshtesh. But what I was trying to get at was a new person (toobukume) with the same problem as the last guy asked. Neither one of use knows what toobukume has in his car let alone what kind of car he has.

so we cool.  

85_trans_am: Just a little confusion between us all good i did'nt realize you were adressing the other individual,so let's get back to helping whoever we can. so what you running in that trans am.

Best to you.  

700hp 383 bottle fed. street strip motor. Got a 383 twin turbo motor waiting to go in. not sure of the hp and tq numbers on that. nore on how I'm getting it in either.  

85_trans_am: That's some nasty equipment your playing with there, i thought about a twin turbo setup but looking at the plumbing and my lack of patience it did'nt look like a good match. Got side tracked this year and ended up with a little 358ci with a big solid roller,12 to 1,Brodix 11x heads with Edel pro-flow fuel inj to run on 93 octane. Should be fun trying to keep the pistons in the motor,550-575hp. The cam was designed to bleed cyliner pressure but we know about the best laid plans of mice and men.  

there nothing little about a 358ci motor. I;ve had my butt waxed by 350s,355s,and 360s. Throw a bottle on it for getting out the hole and watch that little motor do big things. lol  by the way, how much did that pro flow kit run you and how good dose it work. Thinking of going fuel inj.  

85_trans_am: I think enough of the Pro-Flow system i will never consider using a carb again in my life.The Pro-Flow2 system i just purchased is not even out of the box yet but the existing one i have run for the last four years.These systems are flawless the only reason i bought a new one was due to the fact my new engine makes approx 5" vacuum and the electronics on my old one requires 10" of vacuum on  idle circuit and i switched to standard 23 degree heads the one i have presently is a vortec design as i used it with Edel E-Tec 200cc heads.The new system i just purchased was 3000.00 plus 200.00 for a matching Mallory billet electronic distributor. The old one i have i'm selling for 1500.00 and includes the same matching Mallory dist. and includes all components to operate 50lb fuel pump,hand held programmer,computer and complete wire harness and owner and operator manuals. With this system you have total control over timing and fuel at any rpm and at any vacuum level. If you have any friends that use vortec heads it's a smokin deal. If thiers anythingyour intrested in knowing about these systems give me a call Wayne 716-378-3741 even if you just want to gather info.  

Well I don't have vortec heads. I got 492 double hump heads so I don't think they will work. But I got your number. thanks  

85_TRANS_AM: you ever need info on the fuel inj. give a call i will help all i can , Best to you .