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383 Performance Combo's

with a 383 , this car went 10.73 in 1973 all steel 63 sport fury , 383 .03over 13to 1's big iron heads fully ported , huge solid roller , 850 holley , 2'' headers , 5000 rpm stall converter , 4.89 sl 8 3/4 30'' tires at 8000rpm . set record in ihra in 73 . steve reynolds owned and built it . he was cecil yothers tranny guy for the melrose cars .

Fury.png
 
My best friend did the typical shade tree hop ups in his 70 Roadrunner. Hotter hydraulic cam, aluminum intake, 750 4bbl, Purple Stripe springs, headers, adjustable pinion snubber...
That 383 liked to rev! He put a 3.90 in the 8¾ and as long as he didn't "overreach" he was undefeated in street races. Solid low 13 second car, on street tires.
 
.030 over about 8.5:1, 906's with old school 3.angle vj, tm6, 2" spacer, 1.75" headers, 268H, 750dp, 3000 stall, 3.91, 28x8" slicks, 3400lbs. 13.14 @ 102.35

Same engine with oem intake in my 4400lbs fury work street tires went 14.18 @ 98.
 
furious70 said:
.030 over about 8.5:1, 906's with old school 3.angle vj, tm6, 2" spacer, 1.75" headers, 268H, 750dp, 3000 stall, 3.91, 28x8" slicks, 3400lbs. 13.14 @ 102.35

Same engine with oem intake in my 4400lbs fury work street tires went 14.18 @ 98.
Click to expand...


What’s a tm6?
 
furious70 said:
It's a single plane intake, precursor to torker, looks the same
Click to expand...

Early to mid '70's Edelbrock single plane "X" style intake called Tarantula. B is TM6, RB is TM7. Designed for higher RPM & with slightly larger runners than a Torker. IMHO can be just as responsive as a dual plane by using the correct carb & cam combination. Low profile so they fit under a stock hood.
 
Bought an assembled short block from a friend, bored out, KB on the pistons, put 440 Source heads on it, Comp cam, stock rockers, tunnel ram with 390s, didn't know what I was doing really, dyno'd at 450/461.
Went to 600s, different animal.
Went to efi, different zoo, but need to modify my gas pedal as I don't have full throttle. Can hear those things sucking air like crazy, their huge!
Going timing control, different valvetrain, may change the gears.
Drive it everywhere, every day possible, never took it to the track though.
My neighbor keeps telling me to get a 440, but I don't see an issue here.

20170803_184906.jpg 20180617_144433.jpg
 
68 RR 4 speed car 456 non posi rear 8” ripple wall slicks 383 std.bore 906 heads 3 angle valve job, stock intake and carb, stock legal crane cheater cam, 2” hooker fender wall headers, electric fuel pump, best 12.61et.
 
I have new built little ole +.030 383 with a Mopar 484 cam and 906 heads. Nothing spectacular. Throwing it in my 70 Road Runner in a few weeks when all the snow clears.

20201011_185148.jpg
 
If you "pocket port" those 906's you'll pick up a bunch of power. My 1st pocket porting took my car from 12.30's to 11.80's. Plenty of room for improvement.
 
66Satellite47 said:
If you "pocket port" those 906's you'll pick up a bunch of power. My 1st pocket porting took my car from 12.30's to 11.80's. Plenty of room for improvement.
Click to expand...
It's just going in a cruiser for my Son's to take to the cruise nights. I have all of this for power in the other car.

IMG9539321.jpg
 
Sounds like the Comp Cams XE275 HL is a popular choice

Put this together myself

Machine Shop Did The Block + Balance


383/432 440 Source Stroker Kit
3.75 Stroke - .030 over factory numbers block
10.5 Compression

Line Bored
440 Source Billet Steel Main Caps


75cc Edelbrock E Street Heads
Edelbrock 800 AVS2

However I am only running the factory HP Exhaust Manifolds
Street Car
3:91 Sure Grip

A73D001C-22EE-4BC3-9AD9-D50268A5FDDC.jpeg FD2D3689-21B2-4593-A963-8C7945C0760B.jpeg EA51526B-01F8-466D-8B18-364C72A8B5E1.jpeg
 
If you look at that hotrod article a stock 383, just with headers and intake and carb pulled 400 hp.

think about it; stock idle and vacuum making 400 hp... sounds pretty cool...

Thing is with 383s is to get the compression right; with a big bore & small stroke it’s easier to mess up and makes a big difference if you do.

if near stock isn’t your jam this 383 should be with over 500 hp with bolt on eddy heads, big cam, etc:

https://www.hotrod.com/articles/the-story-behind-roadkills-crop-1970-plymouth-duster-383/
 
I think the Tarantula's are great. Ran both TM-7 on the RB & TM-6 on the low deck. On the TM-6 I welded those inside runner lumps and took the lump out inside of the runner to straighten it. Just elongated the manifold bolt holes enough for clearance to slide the bolt in to secure the manifold. The Tarantula's are great intake runner volume for a good moderate build, and fit under the hood.
 
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