L-82 kid that is the cam. It comes on strong at 3000 I will probably go with a 2800-3200 converter. It has a very choppy idle sounds mean. I get allot of people who ask if its a big block. I believe it made about 8 or 9 on the vacuum gauge in gear. If I remember right the heads flow 265 cfm at 6 or 65 hundred. I shift it at about 6500. Hope this helps Oh ya one more thing I drive it every day.

 

whats the point of a 1/2 inch open wood spacer?

so do yall think these are the right heads for this motor or what? 215cc runners, 64cc chambers, 2.08/1.60 valves..

on the motor they dynoed they used an edelbrock 600cfm carb and they swear by it that its the one to use on the motor, they say it performs better than a holley 650 and dont recommend anything but it...they are gonna use an MSD billet dist. with mech. advance with the tach drive, an MSD 6t ignition box (they can give us one from a racecar for cheap). what do yall think about this motor? dont you think it should be making more than 415 hp and 470 tq? maybe the low numbers are due to the incorrect manifold??? u think that will make a big difference?

im tryin to remember the cam specs, but its prolly useless since they will go with a diff. cam since we want solid roller instead of hyd. flat tappet, that brings me to another question, he said that if we go with the forged then the motor will have no problem revving to 8K with the solid roller but make max power at about 6300, what do yall think?

 

Wood is a good insulator so it doesn't really transfer much heat to the carb. And lots of combinations make about 10 horse or so with a spacer. I run a 4 hole on my 383 seems to make a difference in the response cruising around town.

 

what kind of wood do you use?

 

78 Vette

Thanks, It sounds like you have a pretty nice setup. But did you have to do anything to beef up the rear end?


Thanks

 

They sell theme made I think summit / jegs have theme. They also have plastic.

 

418/419tq on chasis dyno

Keith Black 10.5:1
Dart II's P&P 2.02 1.60
Comp solid roller cam (unknown specs, choppy idle)
Comp roller rockers
Weiand stealth dual plane
speed demon 750 1.5" open spacer
Headers 2.5" true duals, dynomax mufflers
Through a muncie and 3.55's

 

So far no problems But don't forget I still haven't mounted a slick and the stock converter that's in there know wont let the motor stall past 1800 so my car comes out of the hole like crap. So there isn't to much stress on the parts all at once.

 

78 Vette - you never answered my guess about the car? Paul Gennalozi - trans-am about 7 or so years ago in a Vette

 

Not sure what you are talking about

 

your avatar

 

Found it on the internet Man I was sitting here saying to my self what he was talking about .

 

so what are yalls opinion about the edelbrock 600cfm carb. for this motor? like i said the shop is behind the carb alllll the way...

we have a holley 650 and 750 that could be rebuilt...but they insist we go with a edelbrock 600...me and my dad arent crazy about using an edelbrock but thats what they say, i mean they've already been wrong on the intake, whats next?

EDIT: did a little research, the edelbrock is easier to tune but more power can be had with the holley/it is more tunable but you have to know what you're doing...opinions? what should we do?

 

Edel vd Holley vs BG vs Qjet the age old battle. This is only my opinion: having run my 383 with a 750 mech dp Holley that was modded by MountainMotor and the 750 mech dp Edel bolted on out of the box, it feels like I have dropped at least 30hp. Now with rejetting and some work on the sec. I can probably get much of that back but the Edel is such a great cruising carb. Drop it on and forget about it, the Holley is the drag racing carb choice. BG carbs show great numbers and looks like they got their quality control issues of a few years straightened out and many love their qjets. Comes down to what you want to do with your vette ie. street vs strip. I love my Edel for cruising, great mileage and no worries but without some work I would not want to run it at the track - rebuild the Holley for that or go with a BG. Again only my opinion but for my needs I don't need anymore hp esp. given the fact that I am running with 15" rims. Damn everytime I ran at the track I just thanked my lucky stars that I was able to drive the vette home and not have it towed.
383 MountainMotor special and will finally get around to swapping the Torker intake for the Weiand Team G this spring just to feel the difference.

 

The 600 will be fine. Edelbrocks are easy to adjust and then you might only need a summer and winter setting. I ran a 750 edelbrock for about 10 years on my 355 ci vette motors.

The wood spacer is for thermal heat soak to the carb.

I used to work at/attend/run my car at the tracks on GT road racing weekends and the Trans-am was often the top race class of a weekend. It was Corvette and Camero's against Mustanges and the Mustanges usually one.

 

The 600 will be fine. Edelbrocks are easy to adjust and then you might only need a summer and winter setting. I ran a 750 edelbrock for about 10 years on my 355 ci vette motors.

The wood spacer is for thermal heat soak to the carb.

I used to work at/attend/run my car at the tracks on GT road racing weekends and the Trans-am was often the top race class of a weekend. It was Corvette and Camero's against Mustanges and the Mustanges usually Won.

 

yeah, i believe the edel will be fine, but power wise, we would be able to make more with the adjustability of the holley 650 right?

we're not too worried about maintainance as we're going with solid roller...it's only gonna be a weekend car and we dont care about gas mileage, just sound and power , i dont want my friends to be able to get the hundred dollar bill i tape to the dash

 

So, this is a 383 that will make peak power at 6300 (so you will want to spin it to 6500+) and you want a 600 cfm carb? I'd think you would be better off with something bigger (750). The brand doesn't matter much as long as it is well tuned.

 

If you want to make power here's a recipe, first I would not go any smaller the Holley 750DP (4779) Match a single plane intake to ( preferably Vic. Jr.) to the Felpro 1206 gasket as well as the heads, they both should be pretty close anyway. Get flat top pistons that will net you 11:1 CR. If you don't mind adjusting valves, alot at first, then get a solid roller Comp XR274R is a nice one for a 383. I hope someone with a 383 follows these recommendations some day.

Get some good headers and mufflers and hold on


If you are really worried about torque I will send you a dyno printout of my 406 ( yours should be the same just not quite as high ) it showw 360Ft lbs of torque at the rear wheels at 2000RPM, probably has near 300RWT at idle

 

well with flat tops (what they are using) we will get about 10.33:1, what we want in order to run pump gas withouth ANY worries, we dont mind adjusting valves, that is why we want the solid roller, we have a 750 DP that just probly needs to be rebuilt (if even that) and also have a 650 DP (same case), they are goin with a comp cams cam, not exactly sure of the specs on the cam...they are new to the street engine business (just getting out of about 25+ years of NASCAR motors) so i think they have a lot of R&D to do on the motors, we will tell them we want a single plane that fits the heads and see what kind of power it makes on the dyno since they are going to break it in and see numbers on the dyno when we go to pick it up

oh yeah, for exhaust, we are going to use the Hedman Side exit headers ceramic coates and make our own 3 inch piping to go under the factory covers

Anybody have any opinions on the Weiand single plane Team G Intake? looks pretty good to me