|07-27-2012 06:40 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 07:36 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 08:00 AM|
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 09:38 AM|
|07-22-2012 12:28 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 12:27 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 12:12 AM|
Chevrolet Corvette Cast Iron Automotive Exhaust Manifolds
|07-21-2012 11:15 AM|
|68NovaSS||Search this site, there's a LOT of build information available.|
|07-21-2012 08:37 AM|
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 08:31 AM|
|07-21-2012 07:35 AM|
|stevens03||mechanical roller better way to go than Hydraulic roller?|
|07-20-2012 08:12 PM|
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 05:00 PM|
Does any one make a "cheater" high flow improved version of the good old '64 67 GM Corvette 2 1/2" Ramhorn exhaust manifolds.
Say with a 2.75" or 3" exhaust outlet diameter and more flow than stock.
That fits the stock corvette Stingray C3 chassis. (63 to 81)
|07-20-2012 03:37 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 03:20 PM|
|stevens03||great info. thanks!|
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