Interesting New 383 Combo! - Team Camaro Tech
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post #1 of 19 (permalink) Old Nov 6th, 05, 09:48 PM Thread Starter
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Chris
 
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Location: Wichita Falls, Texas
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Cool Interesting New 383 Combo!

I have logged 600 miles on my 383 (388) in my 67 El Camino. Here are the specs:

- GM 4-bolt main block, .060 overbore
- Eagle crank and cap screw rods
- Keith Black 12cc small dish hyper pistons (CR is 9.6-1)
- Speed Pro moly rings
- Clevite bearings on main and rods
- Dura bond cam bearings
- Super Flow heads, 192cc and port/polish work, 2.02/1.6 stainless valves
- Comp XE 264 hyd roller cam and Pro Mag rockers @ 1.52 ratio
- Comp Magnum push rods
- Edelbrock RPM Air-Gap intake and 600 cfm carb (tried 750 for a while)
- HEI ignition and Taylor wires
- Hedman Elite headers 1 5/8" X 3"
- Flowmaster American Thunder system with 40 series 2-chambers
- Phoenix Transmissions 700R4, 2400-2600 RPM converter
- 10-bolt rearend with the stock 3.36-1 ratio
- Rear tire size is 275/60-15

The reason why I am posting this is because this combo is amazing. I had an old school 355 in it's place prior to the install that made 365 HP/410 TQ but required super unleaded fuel and it got 10/12 MPG (yuk). I have been able to run cheapo 87 octane fuel and my first tank of fuel I pulled down 16 MPG and this was with the engine still in break-in. I am going to fill up again today after work but I am suspecting this tankful will be closer to 20 MPG due to my switching to the 600 cfm carb. I can't really feel alot of differance between the two carbs.

This is the cool part. When I hammer the gas, the right rear tire gets roasted and the truck hauls the mail. Lots of throttle response and the front end lifts hard. 100 MPH comes very quickly. I can't wait till spring to test this combo at the track. This is NOT a race combo. I built this engine to showcase my talents (for my business) and to be my daily driver. It has exceeded all my expectations at this point.

I had a couple people tell me the cam choice was wrong and that it was too small. This is by design. I believe "great heads/mild cam" is the way to go for daily drivers and to get mileage to boot.

Just thought I would share!

1967 Chevelle 496BB/TH400/Dana-60 (Show and Go)
1967 El Camino 388SB/700R4/12-bolt posi (Daily Driver)
1967 C10 Short-Wide 496BB/TH400/12-bolt (The Shop Truck)
2008 Harley Davidson Dyna Low Rider


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post #2 of 19 (permalink) Old Nov 7th, 05, 06:21 AM
 
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Thumbs up Re: Interesting New 383 Combo!

That's been said for years but generally the "bigger is better" thing overrides good judgement!

Glad you have a good combination.

Look into what John L. thought about good combinations and I think you will see that is the way he built his.

pdq67



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post #3 of 19 (permalink) Old Nov 7th, 05, 09:29 AM Thread Starter
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Chris
 
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Cool Re: Interesting New 383 Combo!

PDQ67,

John was quite a man. He is sadly missed!

1967 Chevelle 496BB/TH400/Dana-60 (Show and Go)
1967 El Camino 388SB/700R4/12-bolt posi (Daily Driver)
1967 C10 Short-Wide 496BB/TH400/12-bolt (The Shop Truck)
2008 Harley Davidson Dyna Low Rider


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post #4 of 19 (permalink) Old Nov 7th, 05, 12:19 PM
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Call me Funk
 
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Re: Interesting New 383 Combo!

Chris,

Sounds like a nice combo. How many $$'s do you have in it?


-Funk



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post #5 of 19 (permalink) Old Nov 7th, 05, 03:09 PM Thread Starter
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Chris
 
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Cool Re: Interesting New 383 Combo!

For the engine, transmission and exhaust, about $7000

1967 Chevelle 496BB/TH400/Dana-60 (Show and Go)
1967 El Camino 388SB/700R4/12-bolt posi (Daily Driver)
1967 C10 Short-Wide 496BB/TH400/12-bolt (The Shop Truck)
2008 Harley Davidson Dyna Low Rider


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post #6 of 19 (permalink) Old Nov 7th, 05, 04:33 PM
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Call me Funk
 
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Re: Interesting New 383 Combo!

How much in the motor?


-Funk



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post #7 of 19 (permalink) Old Nov 7th, 05, 10:12 PM Thread Starter
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Chris
 
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Cool Re: Interesting New 383 Combo!

About $5000, I have not totaled receipts to the penny yet.

1967 Chevelle 496BB/TH400/Dana-60 (Show and Go)
1967 El Camino 388SB/700R4/12-bolt posi (Daily Driver)
1967 C10 Short-Wide 496BB/TH400/12-bolt (The Shop Truck)
2008 Harley Davidson Dyna Low Rider


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post #8 of 19 (permalink) Old Nov 8th, 05, 12:07 PM
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Call me Funk
 
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Re: Interesting New 383 Combo!

YIKES! Ok, thanks.


-Funk



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post #9 of 19 (permalink) Old Nov 8th, 05, 01:28 PM
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Don
 
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Re: Interesting New 383 Combo!

Like your combo,,,, what cc head were you using with the 12 cc dish piston?

Which Eagle rod did you use? I-beam or H ? 5.700 or 6.0? Did you have to run small base circle cam?

Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968

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post #10 of 19 (permalink) Old Nov 8th, 05, 02:24 PM Thread Starter
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Chris
 
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Re: Interesting New 383 Combo!

CFunk,

That is the complete price from the pulleys to the flexplate.

That includes every part in between. Everything is new except for the engine block! The block was torque plate honed and blue printed!!!! Machine work is included in that cost, including the custom powder coated 1-wire alternator and brackets!!! The heads and roller camshaft were a big chunck of that cost.



Zdid17,
The heads are 64cc angle plugs heads. This required a new set of headers for me that cost another $350 (included in above price) , worth it though in my book. The rods are cap screw SIR bushed 5.7's. The camshaft was not a special order. Off the shelf XE264 hyd roller. The rods need to clearanced prior to balancing on the cam side as per most stroker builds



NOTE: I had one small problem. The camshaft did not like the HEI gear. After 20 miles the timing would not stay set. I pulled the HEI and didn't like the condition of the gear. I installed a Competition Products brass gear and all is well again. By the way, Comp Cams said that should not have happened. I am beginning to loose faith in the Comp Cams Tech line, they were no help. The XE hyd roller cams are suppossed to be compatible with stock type distribtor gears. WARNING!!!! They are NOT!!!!



As I stated before, the engine is smooth, powerful and mild. It has a great lope to it that I love. You get that with a mild roller and good exhaust. I am digging it. It is so unsuspecting in my beater El Camino.

1967 Chevelle 496BB/TH400/Dana-60 (Show and Go)
1967 El Camino 388SB/700R4/12-bolt posi (Daily Driver)
1967 C10 Short-Wide 496BB/TH400/12-bolt (The Shop Truck)
2008 Harley Davidson Dyna Low Rider


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post #11 of 19 (permalink) Old Nov 8th, 05, 04:27 PM
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Call me Funk
 
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Re: Interesting New 383 Combo!

Yeah, I missed the hyd ROLLER part of the build, my bad. I'll give it a lower case yikes! instead.

You gonna run it at the track in the spring?


-Funk



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post #12 of 19 (permalink) Old Nov 8th, 05, 04:40 PM
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Craig
 
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Re: Interesting New 383 Combo!

Yep, im completely a believer in 383s. I absolutely love mine. My gas mileage is nowhere near yours (750cfm DP) and at 10:1 i have to run 93 octane but i didnt have it built for gas mileage. But it sure is a blast to drive. My absolute favorite thing is to be cruising along at like 25-30mph in second gear and nail the gas and have that posi rear end just light up.


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post #13 of 19 (permalink) Old Nov 9th, 05, 05:52 AM
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Don
 
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Re: Interesting New 383 Combo!

From my past experience , I will say that your dist gear issue will return... You don't run a brass gear on a cast roller , sounds like you got same cam I do except smaller. You need to use the GM iron or Mr Gasket iron gear for dist. The material that the new cast rollers coming from Comp is "austratempered" if I spelled it correctly,, Never heard of it but its a new process so I am told. I lost a steel gear off a Msd dist the same way . I went brass and it was almost gone within few hundered miles. Went to GM and got the stock iron gear and no problems. You dont run brass on anything but a billett cam.
One other thing to check, if you plugged your bypass on the oil filter,, this will throw additonal load on driving gears also. Its been done but a no no from me.
Comp also told me to be careful of the gears from Msd that they install with their distributers. The gear lack the bevel cut on the gear edges thus bitting into the cam. The stock gears have the bevel. I called Msd about this and they were unaware that this was causing problems. If you compare gears for sbc, you can see what I am referring to.

Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968

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post #14 of 19 (permalink) Old Nov 9th, 05, 08:20 AM Thread Starter
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Chris
 
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Cool Re: Interesting New 383 Combo!

Zdid17,

Thanks for your post and info. I am aware of the problems you spoke of. The HEI I installed in the engine had the type gear you mentioned. I called COMP (no help) and they said the cam/gear should have been fine. I can tell you this. This camshaft came from Summit Racing. It had been sitting on the shelf for a while because it was one of the older versions. I have since used a newer version of the same grind in a customers engine and have not had the same issues as my engine. Go figure.

I consulted this gear dilema with my machinist friend and he suggested the installation of the gear I mentioned. He also told me that not all brass gears are the same. He informed me that he has tried several differant types and that the one sold by Competition Products is superior in the alloy used in construction of the part. He is a very knowledgable guy and so we will see. I plan on pulling the distributor soon to inspect.

The issue between Comp Cams and MSD is well documented on this site as is the Chevelle site. Both companies deny any fault but there sure seems to be alot of problems posted here.

I will continue to keep you guys posted. AND YES!!!!! I will run the El Camino at the track in the spring. Our track has closed for the winter.

Thanks Guys!!!!!!!!!!!!!

1967 Chevelle 496BB/TH400/Dana-60 (Show and Go)
1967 El Camino 388SB/700R4/12-bolt posi (Daily Driver)
1967 C10 Short-Wide 496BB/TH400/12-bolt (The Shop Truck)
2008 Harley Davidson Dyna Low Rider


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post #15 of 19 (permalink) Old Nov 9th, 05, 05:10 PM
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Dr. Feelgood
 
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Re: Interesting New 383 Combo!

Chris,

Interesting about the dist. gear.I had heard that the brass ones were too soft to last real long.

I am currently having a 550hp/383 built for me.It will have an Eagle forged 4130 steel crank,Eagle forged 4340 H-beam rods,SRP forged 11.1:1 pistons,Comp cams mechanical roller (.582" intake/.588" exhaust),Comp Cams pro magnum 1.52 rockers,Patriot Performance 220cc (64cc chamber) CNC heads (2.05/1.60),Edelbrock Victor Jr.,and a ProForm 750 mechanical DP race carb.

Backing this up will be my just freshened M-21 and a 3.73 posi 12-bolt...in my '69 Z/28.

I know I'll be blending race fuel and adjusting valves like I've always have.I could have gone the mild roller/low compression route but I wanted something more befitting a high-winding 1969 Z/28...only modern.

I want to have a bitching street/strip motor and I think this is it.

Your thoughts?

'67 Buick Skylark F/C "Ingenue" 8/10 HRM feature / 2/12 Gasoline (Swedish) feature
World's only Buick-powered Buick Funny Car!
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