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Topic Review (Newest First)
07-27-2012 07:40 AM
justahoby I just pulled a 383 out of my truck few months back for a 454.. That 383 was strong in my 5 speed pickup. I ran RHS 180cc (non vortec) and coulda gone to 200cc runners, lunati 60120 on a factory roller cam block bored 0.040 on 2.5 in duals, ran wicked strong on a tall 3.08 gear ( didn't know it was overgeared in 5th ) would like to have seen that bad boy on a 3.30 or 3.55 gear in a vette
07-26-2012 08:36 PM
vinniekq2 dcairns,very nice,,,very very nice.Also proves that 370 HP is not tough to get with a decent idle.Smooth running ,moderate RPM,no need for steep gearing,just love it.
07-26-2012 09:00 AM
dcairns
Quote:
Originally Posted by stevens03 View Post
My transmission is a 4 speed muncie
gears are 307 i believe maybe 373

I want this engine to resemble my old 63 327
i will be using exhaust manifolds, i will get a intake with a oil fill tube, air cleaner, etc.
You might find what I did interesting. I wanted my engine to appear perfectly stock on the outside, so I was constrained by the stock heads and intake. But I was able to get 370 HP and 420 Torque out of it, while being mild enough to have a civilized idle and run power brakes and A/C.

If you want to keep the look of the old style small block and use the oil fill tube in the intake and avoid the valve covers with holes in them, you need to start with a older 327 block that has the crank case vent cast into the block (hole near the distributer). This way you can use the stock valve covers with no holes in them.

Old style block (as would be used in 64). Notice the extra hole next to the distributer hole (on the left side). The hole connects to the lifter valley. This extra hole is where the draft tube (in earlier years) would connect. By 64, there were the two vent systems, as in the diagram I posted earlier.


By the time the 350 came out, this hole was eliminated and the crankcase venting done through the valve covers.





I supplied a '64 327 block to Orange Engine http://www.orangeengine.net/ and they had 350 caps installed on the 327 block, then line bored to the larger journal size of the 350. Now a standard 350 stroker crank will fit in (with the usual clearance work done to the block).


Some nice hydraulic roller lifters so there are no lifter break-in worries and no zinc worries.



A mild cam.



Gives you 370 HP and 420 Torque on the engine dyne.


But looks perfectly stock and is mild mannered enough to have power brakes and A/C. Best of both worlds, except for cost
07-22-2012 10:38 AM
BigEd36
Quote:
Originally Posted by vinniekq2 View Post
BigEd,that does sound correct.Thank you for posting that.and remember what Shelby said about racing and the costssss. It hasnt changed one penny,it still takes every bit of money you have
Vinniekq2, it's soooooo true. If I had taken all the $$$$$$ I spent racing and invested it I would probably be living a comfortable retirement instead of draggin' out of bed at 4:30 to go to work! But all the fun and the memories..............priceless!
07-22-2012 01:28 AM
vinniekq2 PS ED,when we raced at langley speedway back in the late 70s our limited superstock was number 36.piloted by Garnet Zimmerman.
07-22-2012 01:27 AM
vinniekq2 BigEd,that does sound correct.Thank you for posting that.and remember what Shelby said about racing and the costssss. It hasnt changed one penny,it still takes every bit of money you have
07-22-2012 01:12 AM
BigEd36
Quote:
Originally Posted by vinniekq2 View Post
I remember back in the late 70s there were high flow after market exhaust manifolds available.They looked like stock manifolds and the "limited" super stock roundy round guys had them.Im sorry I cannot remember where they came from.
Vinnie, sounds like you're thinking of Brzezinski Racing Products. They specialize in cast iron intakes, heads, and exhaust. They have good stuff but they're pricey!
Chevrolet Corvette Cast Iron Automotive Exhaust Manifolds
07-21-2012 12:15 PM
68NovaSS Search this site, there's a LOT of build information available.
07-21-2012 09:37 AM
vinniekq2 Steven,have you found an exhaust system for your car yet?
A roller cam and kit is at least $600.oo more than a flat tappet cam,then you need a bronze distributor gear and highly recommend stainless valves.Thats gonna kill your budget. A Flat tappet cam can make 400 hp easy.Some,(not all) 350s can be punched to 401 cubes.

Whats in the car now?what year is the car?
07-21-2012 09:31 AM
ap72
Quote:
Originally Posted by stevens03 View Post
mechanical roller better way to go than Hydraulic roller?
For your application- not really. Your rpm peak will be so low it won't make much of a difference and on a street car having a quiet maitenance free valve train is kind of nice. I have a solid cammed car and a hyd cam car I drive on the street regularly and the hyd cammed car is nice because the only noise you hear is the exhaust.
07-21-2012 08:35 AM
stevens03 mechanical roller better way to go than Hydraulic roller?
07-20-2012 09:12 PM
vinniekq2 I agree that the exhaust manifolds will hurt the performance.The really good flowing heads will still be choked by the exhaust manifolds so buying great heads is a waste of cash,sorta. I remember back in the late 70s there were high flow after market exhaust manifolds available.They looked like stock manifolds and the "limited" super stock roundy round guys had them.Im sorry I cannot remember where they came from. Either way you will need an extra 10 degrees or so timing on the exhaust side.

What year is your vette?The sound is quite distinct for the 375 hp cam and the 350 hp cam. 400 HP is do able.The biggest exhaust I could put on my vette was 3'' do to the pipe needing to go through the frame.If you use a solid cam I think you could squeeze a little more than 400 HP out of the mouse,the budget might get abused though? You would need to spend money on horse power savers as well as HP producers. IE,light weight crank=expensive with small HP gains.Oils scraper,expensive(or time consuming) for small gain.Accessory speed reduction pulleys,small increase in power.Vacuum pump,maybe 20 plus HP but requires different bearing clearances or heavier oil. Synthetic oil,expensive for a small HP increase,,,, and so on
07-20-2012 04:37 PM
ap72 I don't think Joe will build you an engine for 4 grand, not one with all new parts and a solid roller cam.
07-20-2012 04:20 PM
stevens03 great info. thanks!
07-20-2012 02:58 PM
stevens03
Quote:
Originally Posted by ap72 View Post
Yea, it will be easier with more displacement. But those manifolds are going to make your power curve hit a brick wall. Build for a low rpm power peak. Performer manifold, AFR 180 heads, and a really good roller cam from a cam grinder that can work magic. all the "little things" will count sice your placing such a handicap on yourself.
What size roller cam would be good for this?
Flat top or dome pistons recommended?
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