1970 Chevelle SS 454 LS6 Rebuild + Details

[m22mike]

I dought Winters made stuff like sheet metal parts, As you may know Winters was a foundry here in Canton Ohio.

Mike

[XXXGoldL34M20]

Monday night i hired my engine builder and i decided to go with Roller rockers and lifters for better durabilty from the engine. I will also be using Flat top pistons to achieve a compression ratio of 10-1 or 10-5 as i want to run 94 premium gas from a gas station without always putting in an additive.
I will also install the Pretronix kit under the stock distributor cap.
The stock dimple rods will be used again and i all ready Sold the Used pistons a few weeks back.
I plan to drive my car a lot so this set up makes more sence for my tastes.
Car will still make a lot of ponies and look bone stock under the hood[img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]
For the Exhaust i will be using the stock 69' Chambered exhaust system that came on the car as i just love the sound these make.

[WILMASBOYL78]

You may be pushing the issue with 10 or 10.5 to 1 compression with pump gas and iron heads...of course a modern design roller cam (I assume hydraulic?)would help. I would be interested in more of the build specifics you have in de-tuning the motor for street use...sounds like a great project.

wilma

[XXXGoldL34M20]

Wilma we know this, the motor rebuilder has done a lot of Big Block Gm Motors and he knows what to do to make it run right.
Yes he will be using Hydraulic Roller cam with lifters and rockers.
He will decide on the specs after all the measurements are done and dialed in.
I will post what parts i am using when the motor starts in 2 weeks time.
Looking forward to putting this LS6 back to life.
Every part will be brand new except for the LS6 rods.
Block is at .30 over and heads are bone stock, crank is a stock 7416 piece.

[XXXGoldL34M20]

Here are the gm Dimple Rods and Harmonic Balancer.
The Harmonic Balancer is now sand plasted with a shot of primer since photo.

[MosportGreen66]

Why not leave the solid lifters in there? Just curious...

[XXXGoldL34M20]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MosportGreen66</div><div class="ubbcode-body">Why not leave the solid lifters in there? Just curious... </div></div>

I still may go with solid lifters yet,
Will decide in a few weeks when it is time to choose a cam.
The solid lifters roller Rocker arms have the lockers on the top so once they are set they should not be a hassle to adjust.
They also make more power i guess.

Wondering what everyone else has done here with there hi performance motors?

I just want to build a nice running motor that will be low maintenance and run good on 94 octane pump gas.

My 2-cents?

If it was mine, I sure wouldn't be messing around with a hydraulic roller or clipping the compression. Running the valves, checking plugs, chasing the timing and playing with the Holley is part of the fun from my perspective. But that's me I guess. [img]<<GRAEMLIN_URL>>/grin.gif[/img]

Wayne

[TDW]

All of my hi-po engines have solids. They do not need to be adjusted all the time. I have 5000 miles on a 427, with only one valve lash. My bone stock L78 has thousands of miles on it too, with no valve lash in years. Even my old 392 Hemi hasn't needed a lash yet.

[MosportGreen66]

Its part of the fun. And frankly what good is an LS6 without the noise of the motor?