383 to 438...not too shabby.

mentor70 · Sep 21, 2018

my good friend was asked to build an engine for a 69 roadrunner.

after talking with the owner we decided to use the 383 block with a 440source 438 stroker kit.

we topped it off with the Edelbrock RPM heads and a Lunati Voodoo hydraulic flat tappet cam PT# 10230703

no head porting was done, or head milling, the "advertized" compression is arould 9.5 to 1.

topped off with the Holley street dominator single plane intake and a holley 780 vacuum secondary.

manifold vacuum was 14 inches!
the owner took the engine to a local dyno today and made some pulls...he called up very happy with the initial results.

great little combo!

Ironbuilt · Sep 21, 2018

WOW!!! Those are great numbers for a pump gas friendly B motor. Good luck!!

mentor70 · Sep 21, 2018

there are sooo many 383s out there collecting dust...this may help get a few more back on the street

gdrill · Sep 21, 2018

My favorite, under-rated engine..........perrrrrfect!

1967coronet440 · Sep 21, 2018

mentor70 said:
there are sooo many 383s out there collecting dust...this may help get a few more back on the street

I have one in my garage I need to do something with, spun a rod bearing 5 years ago and its been sitting since.

Bee1971 · Sep 21, 2018

Do you have the total timing specs ?

And what headers ?

Thanx Scott

I built my 432 Stroker this past winter - 440 Source

10.5 - 1 Compression with the 75cc Edelbrock Heads

Comp XE275HL Camshaft

mentor70 · Sep 21, 2018

^^^^we are waiting for additional info, supposedly the last run made mid 530s HP!

65-440 · Sep 22, 2018

Nice ! I almost went this route with my 383 ....

PRND21 · Sep 22, 2018

The combo in my 65 Belvedere: 69 .030 over 383 block, Eagle 3.9 inch stroke crank, Eagle h-beam rods, JE forged pistons 9.9 CR, Comp XE274 cam, Edelbrock heads, performer rpm intake, 850 carb, TTI headers. 449 cu. in. No dyno sheet, this engine pulls strong from 1500 to 6500 rpm on 91 octane. TKO 600 with 3.55 8 3/4. Fun car to drive.

friendofvirgil · Sep 22, 2018

The B-engine 383 blocks are a great place to start a build. Just as mentor70 stated, there are many out there. Overshadowed by the RB-engine which makes the 383 or even a 361 more attractive. I did a build on a 63 383 HP block and a set of 2206324 (4-bolt valve cover) heads that, aside from being closed chamber like the '67-only 915 heads, are truly a set of boat anchors. All this effort for a period-correct-look-build using factory castings. A 4" welded up stroker crank from a tractor puller at Indy Swap Meet, stock rods and 0.060" over JE 11-1 piston(custom ordered) yielding 460 cubic inches. Heads were massaged to equal flow numbers from a set of Indy SR's. And, 2.19" intake/1.81 exhaust valves installed. Cam Motion solid lifter cam(custom grind order). On the engine dyno, it made 601 hp @ 6100 and 564 ft lbs @ 5200. I spent $5600 to build the engine and $500 for the dyno session...almost 14 years ago. Already.

Larrry B. · Sep 23, 2018

friendofvirgil said:
The B-engine 383 blocks are a great place to start a build. Just as mentor70 stated, there are many out there. Overshadowed by the RB-engine which makes the 383 or even a 361 more attractive. I did a build on a 63 383 HP block and a set of 2206324 (4-bolt valve cover) heads that, aside from being closed chamber like the '67-only 915 heads, are truly a set of boat anchors. All this effort for a period-correct-look-build using factory castings. A 4" welded up stroker crank from a tractor puller at Indy Swap Meet, stock rods and 0.060" over JE 11-1 piston(custom ordered) yielding 460 cubic inches. Heads were massaged to equal flow numbers from a set of Indy SR's. And, 2.19" intake/1.81 exhaust valves installed. Cam Motion solid lifter cam(custom grind order). On the engine dyno, it made 601 hp @ 6100 and 564 ft lbs @ 5200. I spent $5600 to build the engine and $500 for the dyno session...almost 14 years ago. Already.

View attachment 656965

Sounds similar to my build that I had done in 2004.
'68 Block (all machine work done, .030 overbore) with stock forged crank and rods (rebuilt).
906 head fully gone over, ported / polished, larger valves, dual springs, port matched to intake.
JE Forged Pistons Domed @ 11-1, custom ordered.
Had a big Crane roller cam but changed it out to a Comp custom grind to make it more street friendly with help from Hawaii Racing in Simi Valley.

Now using an RPM DP intake (M1 Single originally), have anoher RPM DP ported by Wilson that I'll be switching out soon with a 1" tapered spacer.

This was originally built as a bracket racer, younger single making decent money at the time. Stuff happens so I put this in storage for a long time and have been taming it for the street the past 2 years. I love the hobby and Mopar specifically but the motor is what has kept me going really as I was never going to "give" this away after all the time/effort/money. Going to try to have it dynoed (for the first time) before the year is out, so I'm very curious to see what the #'s are.

383 to 438...not too shabby.

mentor70

Well-Known Member

Ironbuilt

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mentor70

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gdrill

Just enjoying "B"-ing here

1967coronet440

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Bee1971

Well-Known Member

mentor70

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65-440

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PRND21

FBBO Gold Member

friendofvirgil

Well-Known Member

Larrry B.

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