cooters T bucket build
- Thread starter cooter
- Start date
cooter
Well-Known Member
Aggravating isn't it? 4" bore 3.48 stroke pistons are a dime a dozen. Nobody fools with the old school 265- 283 stuff. Sad
SRM1952
Member
not a lot of pistons for 327 without going to the more custom stuff--- more for 383--- lots
fletcherson
Well-Known Member
Everyone forgot the high rev 302's, etc... the 327 is one of my faves...still have one put back. I had a sweet running 283 with power pack heads, GM hot cam, Holley street dominator, 600 afb in a s10 blazer. Loved it, miss it. I will say that the 383 is a screamer!
(Here's a post from another forum back in 2010 re: Power Pack heads )
They are okay for a daily driver on a small cubic inch 283. Why is because they have small 1.71 intake valves which makes for high velocity at low RPM.
They also have very small 137cc intake runners which also makes for high velocity. when these are teamed up with a 2 barrel or a Quadrajet, it makes for super sensitive low end throttle response and great off idle torque. The down side is, it falls flat on it`s face at 3500 RPM. I don`t recommend the power pack heads, and why is because they don`t have accessory holes which makes mounting accessories easier, they also don`t have hardened exhaust valve seats and without lead in the fuels to protect them they erode away. I recommend using a pair of 416 casting 305 heads. They have a slightly bigger exhaust valve of 1.84, the combustion chamber is 57cc`s just like the power packs, the intake runner is larger at the standard 160cc`s, They have accessory holes and hardened exhaust valve seats. The last time I picked up a pair of these at the junk yard it cost me $50 bucks, and they didn`t even need new guides, all I did was work them and run`em. The small valves will give your 283 great torque and the larger runners will give it better upper RPM response.
fletcherson
Well-Known Member
The down side on 305 heads is they are prone to heat damage, cracks, warpage. They do have smaller chambers, so you can get decent compression with them. All older heads need new seats and maybe valves to survive unleaded fuel. You can drill accessory holes also. On a bucket there really isn't a need for accessory holes with minimal accessories, so old school works good. As for the 3500 rpm power limit, I'm not sure about that. I didn't have a dyno, but mine pulled great up through five grand or so, no problem. I didn't race it, but it would suprise many between the lights, or on the freeway. With a 700r4, it would run out as fast as I wanted on the street and it had impressive throttle response, power, and not bad fuel mileage. The thing I didn't like about 283 is the press on dampener. My crank was drilled and tapped. I would rather run an old school 283 or 327 than a run of the mill 350 any day, personally. Now, stroke a 350 and we have a new discussion.
cooter
Well-Known Member
My 283 is really a 292 c.i. it pulled all the way to 6k. Never missed a beat. I wouldn't trade this engine for 2 350's. Small runners and quadrajet gives me instant throttle response and 16 mpg. Low geared 700R4 gives me a jack rabbit take off John force would quiver at. A 327 punched out to 331 would be nice. I like the old school stuff.
one finger john
Active Member
Let the boys put it back together !
cooter
Well-Known Member
Getting them tonight. Maybe they can put #8 back in and scrape some gasket off.
one finger john
Active Member
It will take a little guidance on your part about the finer points of reinstallation but I know they can do it.
One on top gently tapping the piston assembly in while one on the bottom guiding the assy so it will seat properly on the crank. Do you have the little booties for the rod bolts ? Then torqueing the rod bolts and installing the pan. Just like a top fuel team !
On a slightly more serious note, I had read a while ago that ring manufacturers recommended not honing the bores on re-ringing but installing the new piston assembly with light lubrication and no honing of the cylinder. Seems the rings will break the glaze and seat themselves. Remember to dress the ring ends.
Any validity ?
Any way, this will be fun. Best of luck. (I know everything will be O.K.)
John
One on top gently tapping the piston assembly in while one on the bottom guiding the assy so it will seat properly on the crank. Do you have the little booties for the rod bolts ? Then torqueing the rod bolts and installing the pan. Just like a top fuel team !
On a slightly more serious note, I had read a while ago that ring manufacturers recommended not honing the bores on re-ringing but installing the new piston assembly with light lubrication and no honing of the cylinder. Seems the rings will break the glaze and seat themselves. Remember to dress the ring ends.
Any validity ?
Any way, this will be fun. Best of luck. (I know everything will be O.K.)
John
fletcherson
Well-Known Member
I remember back when I was a kid learning how to wrench on go carts and old techumseh engines. The valve spring keepers and piston rings were the hard things to master. I have not heard the part about not honing for new rings. I always thought it was required. Hmmmm I'd like to understand more about the specifics. Maybe old dogs can learn new tricks, lol!
old round fart
Well-Known Member
I think the guy that doesn't recommend hoaning does a half rebuild and doesn't have a home.
one finger john
Active Member
Well, Heh Heh Heh, guess what ! I posed the same question to the folks at the HAMB round five years ago. Same confusion.
Cooter, have the boys pull the engine, break it down, hone it and replace the rings. All the rings. A complete "top fuel" rebuild. All the bearings should be good, same for the cam and lifters, ck. the timing chain, lap the valves, new gasket set, down the road ya go. All for under (mumble, mumble, mumble) I sure like spending your money!
John
Throw in a good stock oil pump also.
Cooter, have the boys pull the engine, break it down, hone it and replace the rings. All the rings. A complete "top fuel" rebuild. All the bearings should be good, same for the cam and lifters, ck. the timing chain, lap the valves, new gasket set, down the road ya go. All for under (mumble, mumble, mumble) I sure like spending your money!
John
Throw in a good stock oil pump also.
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one finger john
Active Member
Hey fart, ya sayin' that I'm homeless ? Or that I'm honeless ?
fletcherson
Well-Known Member
Lol!
old round fart
Well-Known Member
No cooter! I said hoan. Spellcheck strikes again! Lol
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