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4.3 head casting - 14094768, vortec?

March 12, 2018, 11:11 am
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Any idea on the early 90's "vortec" heads fromt he 4.3's, do they flow well / as well?

Have a pair off a 94 boat with casting 14094768 -

curious if these produce good low end torque?

couldnt find any flow numbers online -

thanks!
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Pitting.

March 12, 2018, 7:10 pm
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So I pulled the heads of a built 355 with flat top piston only to find some pitting in cyl # 6. See pictures. Do you suggest I just hone cyls only or tear down and send block to machine shop/bore? Any suggestion thoughts experience appreciated.

Thanks in advance.

Sent from my LGMS330 using Tapatalk
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351w flywheel/flexplate problems

March 12, 2018, 8:11 pm
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I have a 1985 ford bronco with a fresh rebuilt engine and when i got it, before the engine was rebuilt the teeth on the flywheel were wore down and it would grind and make a god awful screeching sound, and after i rebuilt the engine i put a new flywheel on it and its grinding again, im wondering if the flywheel that was put on it factory is 157 tooth or 164 or any ideas on how to stop this from happening because i cant keep splitting the transmission and engine to put a new flywheel in it every month
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Flathead V8-60 new heads question

March 13, 2018, 8:17 am
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I have a Ford V8-60 and the opportunity to get a set of offenhauser heads. There are NOS units. My thought is they should bolt right on.
I have seen other "Meyer?" performance heads with a note that domed pistons are required.
Does anyone have experience with the Offy heads on a V8-60?
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GM 302 heads

March 13, 2018, 9:05 pm
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What would you recommend for a street legal 302.
I just broke a rocket stud and think the camel humps may need upgraded
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crank journal

March 14, 2018, 5:07 pm
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i picked up my crank from the shop today and found that one pin has a very small ding on it, rather than going all the way back to have them touch it up would i be safe to use say 1000 grit crocus cloth on it? it feels to be a very small burr when i run my nail across it, thanks
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Brodix BB2x valve covers

March 14, 2018, 6:45 pm
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Anybody know a correct part# for Valve Covers for brodix BB2X heads, Mark IV block. I ordered the brodix vc200 from summit but it does not clear the width of the rockers, tall enough not wide enough.
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Water neck bolts broke off.

March 14, 2018, 7:23 pm
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While trying to loosen water neck bolts, the both heads broke off. Luckily there's part of the bolts still sticking out of the manifold. What's a good way to take them out? I've tried Vise Grips but no.I've tried spraying PB Blaster,nothing. Aluminum intake, steel bolts. 454
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overheating 350

March 15, 2018, 4:50 am
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1993 350 running hot, when accelerating on highway it wants to overheat, when I coast it cools back down but still hotter than normal. also upper hose feels soft when running and I did replace thermostat.
CAN YOU HELP?
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Cam selection help

March 15, 2018, 6:49 am
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383 sbc, 11.1 flat tops, profiler 210cc with 2.05 valve, single plane intake, 850 carb, 3 speed auto, 3700 lbs, 3500 stall converter.
Tryng to pick the better of the two, hydraulic roller conversion also.

565/580 lift
247/253 @50
300/306 adv
icl 104
Lsa 108
2800-6400


600/600 lift
247/255 @50
300/308 adv
icl 108
Lsa112
300-6800
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Flat tappet cam for 350 w/Vortec Heads

March 15, 2018, 10:54 am
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I'm doing a budget build 350. It had 882 heads on it but I picked up a pair of vortec 906's. It's probably going in an '82 Malibu wagon with a stock automatic, stock converter and 2.73 rear gear. Will be a daily summer driver/cruiser. I'd like to be able to run 87 octane in it. It'll have 1 5/8" headers and 2 1/2" dual exhaust. I'll have right around 9:1 compression with the dished pistons I'm running. I'm looking to get some good horsepower while not losing the bottom end torque it'll need to get moving with highway gears.

I'm looking through all the cams trying to figure what'll work best. Part of what I'm wondering is how well the newer, high rams will last vs the older slyle cams.

For older style cams, I was considering Summit's SUM-K1103
Basic Operating RPM Range: 1,600-5,200
Intake Duration at 050 inch Lift: 214
Exhaust Duration at 050 inch Lift: 224
Duration at 050 inch Lift: 214 int./224 exh.
Advertised Intake Duration: 288
Advertised Exhaust Duration: 298
Advertised Duration: 288 int./298 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.444 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.466 in.
Valve Lift with Factory Rocker Arm Ratio: 0.444 int./0.466 exh.
Lobe Separation (degrees): 112


For newer style, I was thinking(So far the winner with my highway gears and stock converter)
Lunati 10120702
Advertised Duration (Int/Exh): 262/268
Duration @ .050 (Int/Exh): 219/227
Gross Valve Lift (Int/Exh): .468/.489
LSA/ICL: 112/108
Valve Lash (Int/Exh): Hyd/Hyd
RPM Range: 1400-5800

or Lunati 10120703
Advertised Duration (Int/Exh): 268/276
Duration @ .050 (Int/Exh): 227/233
Gross Valve Lift (Int/Exh): .489/.504
LSA/ICL: 110/106
Valve Lash (Int/Exh): Hyd/Hyd
RPM Range: 1800-6200

Or the venerable Comp Cams XE268H
Duration:268 280
Lobe Separation:
110°
Duration @ .050" Lift:224 230
Intake Centerline:106°
Valve Lift: 0.477 0.48
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Choppy Cam is Smooth, What is Wrong?

March 16, 2018, 7:32 am
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I have a howards rattler cam for my ford 400ci. I rebuilt my engine and howards said this would be a good cam for my build. When i had less than 200 miles on the build the idle was very lopey/choppy. Now after driving the idle has smoothed out almost sounding stock. What should i look at to fix this? Performance is still there and the truck drives well, just needs a but more tuning. I loved the lope but dont want to sacrifice power to get it, however tge cam was advertised as a choppy cam so it makes me think something is wrong.

I Have tried to research this without much luck. Hopefully someone can offer some good pointers. Thanks all.

I have already contacted howards, but they werent very helpful and stopped responding. Probably wouldnt buy from them again because of that.
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Diesling

March 16, 2018, 7:39 am
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Since I started using ethanol free gas, my motor started diesling when i shut it off. Motor is a 350 with brodix heads and 670 holley street advenager.
Could the gas cause this or would it be something else.I never was any good at spelling.
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Pre Oiling?sbc

March 16, 2018, 9:22 am
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Iam looking forward to getting this newly rebuilt sbc on line this month.My question is this/ Whats the commonly used method well...I know you use a drill motor ---and i have a pre-oiling rod, to do that. The time!! I do this... can i do it, 2 weeks ahead of starting planned time -must i wait til i am firing it up very soon? Had a hard time wording this one! ex; If i want to pre-oil the motor and wait til another week or month has gone by?? CAN i pre- oil it about anytime i want?Or must i oil it close to the day i start it. Sure hope you all can understand this post/ I had to read twice before i got it.....and i wrote it.:sweat:................:cool: bob s
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buick nailhead camshaft 322

March 16, 2018, 11:43 am
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looking at a camshaft found one that says 3/4 camshaft no other marking on it must be a reground camshaft

Attached Thumbnails
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Tachometer fluctuation

March 16, 2018, 5:07 pm
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My tachometer will work and then go to zero, randomly. It's an electronic tachometer. It seems to work right when its working. I think I asked about his a while ago but I cant find the post on it. It's not the distributor because I just put in a new one and the same problem was happing on the new one and old one. Not sure what to do. I was thinking about taking the tachometer apart. I already did one time to see what was in there but maybe I will mess with it more.
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+ Engine Masters Deletes/Blocks Comments Now +

March 17, 2018, 4:58 am
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They are dragging their feet on releasing Jan. 31st Ep. 31 (equally configured 351W vs SBC 350) from pay Motor Trend Channel to free YouTube for well over the usual month... have now deleted the comments on all Engine Masters Episodes, because the results of Ep. 31 were revealed in the comments for the 'teaser' on YouTube!
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Interchangeable small block parts

March 17, 2018, 1:35 pm
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Hello everyone new member here. And I’m new to the whole hot rod seen so bare with me. I’m not completely sure about what parts will interchange on the first gen small block to the vortec engine like mid 90s. I have a lot of good parts for the first gen style like cam heads intake etc. my question is if I was to buy just a vortec block and leave things like the crank and pistons in it would I be able to bolt on the heads and intake from the first gen sbc as well as use a flat tappet cam and lifters? Any input would be appreciated thanks
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Bottom end not there

March 17, 2018, 6:02 pm
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I bought a .40 over 350 block and had it build by machine shop scat crank and i beam rods promax heads 2.02 1.60 comp cams xtreme energy 08-422-8 roller. Block is 1996 350 64cc chamber head 210cc runner and 0.054 gasket 12cc dish speed pro pistons should i put some coated 0.015 felpro shims to raise compression to gain bottom end i have 1.5 ratio comp cams ss rocker arms
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working on l6 250 intake manifold

March 17, 2018, 11:50 pm
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hi

my goal is installing 4bbl square bore fuel delivery system on factory intake manifold

is this possible ?

if i shave the intake bore like this :



then working more :



with this modification can i install this adapter on my manifold :



if this modification isnt possible finally i must to buy offy intake

tnx
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