Stroking G-Body Motors
- Thread starter Max Headroom
- Start date
- Status
At top dead center, if the crank stroke is longer, the stock rod and piston stick up that much higher. Odds are good you run into an open valve. Need corresponding pistons with the wrist pin location moved up to match.
If you are going to keep the Gen 1 engine, start with a 1987+ roller cam block, and use Vortec iron heads. Summit sells a prepped block, and you can put in a cast stroker crank and matching pistons - the pan rails have already been relieved. Although you will now need a Vortec intake and may need a ‘melonized’ distributor gear if you choose a steel cam, the rods and tin swap from your 305. I think the Summit block is drilled for a fuel pump.
Last edited:
Most likely the Pistons would come out of the bore enough to hit the heads, you can't just throw in a stroker crank without matching the rest of the rotating assembly to it, one of the reasons they sell kits to avoid mismatching of parts
Thanks for the response. I agree with everything you say, when looking at it from your point of view. However, there are some arguments for my point of view. At 18, living on my own, with a minimum wage job and living on the couch in a friends apartment, I rebuilt my first engine and reused almost every part (bearings, oil pump, rings, etc.). I blew a head gasket (from age not abuse) and had to save for over a month to buy the few parts I had to have to do the repair. The point is that finance is a key factor in what people will do to improve their rides. What I am working on is a way to improve power for (by comparison) a much smaller initial investment in the engine you have, while also creating the opportunity to upgrade your present engine with power making parts, that you can save for and add over time. Many people have to trade their own time and effort for the financial savings that provides.
There are also a lot of older guys, like myself, who prefer the dependability and ease of operation you get from a non-ECM ride. The flow potential of aftermarket heads helps close the technology gap with an LS and most of the older blocks make up for some to the rest by more cubes. Do you not think that an Olds 350 or sbc 350 can't make enough power to satisfy the average enthusiast?
What I am working towards, is the ability to provide an affordable building block to make power for the guy who wishes he could have more but just can't afford it. By the way, if I end up where I want with my design and research work, this process will also work on an LS.
What if all you have is a 305 or 307. And I already said that you could buy a low compression 350 and do this and swap out the 305/307
The problem with your post is that house, wife, kids, bills, usually come before hot rod. What I am proposing is a way to get started making power affordably.
Last edited:
Best "quick" solution I could think of:
383 Small-block - Lethal Weapon Project - Top Gun - GM High-Tech Performance Magazine
Check out this installment of our Lethal Weapon Project! See how to install the AFR 195cc SBC Eliminator Street cylinder head to a 383 small-block. Building any engine from scratch requires a significant investment of both time and money, and this time we're certainly reminded of the effort...www.superchevy.com
Stealth TPI Induction - L98 Stroker Installation - Super Chevy Magazine
This Chevrolet L98 TPI engine has its displacement stroked to 383 cubic inches and has stealth mods installed including a new cam and an extrude honed tuned port injection system to make 458 HP - Super Chevy Magazine
Oh wait... that isn't even close to how silly this proposed concept is. An engine is an air pump, it doesn't matter how much displacement it has if it cannot flow air in and out efficiently.
Why is it silly? Take a standard low compression sbc 350, stroke it. More power but heads, carb, exhaust, 2 bbl carb, etc all keep it from making better power. So, as you get the money, change the limiting parts. Except for the stroking, that's the silly concept that has been used since hot-rodding began.
Are you gonna send me the money to buy this stuff? Did you have enough money to do as you say when you first started? I didn't and neither did most of the guys on this forum.
Absolutely true. I have been hot rodding since I can remember and at my job, one of my functions was to design equipment. I was good enough to get patented more than once. I'm pretty sure that this is going to work.
- Status
Similar threads
