I have heard that you can have thew main journals on engine blocks drilled so they can accept 4 bolt main caps. I have a 1969 351w I am planning on using for a 408 stroker, and I am wondering what the opinions on this are out there.
Why not just put a stud girdle on it? Probe industries makes one, not that expensive and works well. I am building a 393 stroker and looking for about 500 rwhp and have been assured that with the girdle it will be sufficiently strong.
What happened with the Coast high parts? My local speed shop has recommended their 408 stroker kit to me, but I would love to hear the opinion of someone who has actually dealt with them. Who would you recomend in their stead?
My first experience was with Pistons. I have a 466 with Blue Thunder heads. I was told "Sure we do custom pistons to your order & we do NOT use Chevy blanks"... LIARS! I use a Chevy pin & told them .750 lift! After trial fit I couldn't turn over the engine, cut a piston for clearance, scrapped it! It had a Chevy intake valve location! Had to go from .750 lift to .550 on a roller. Second was a 557 kit from Coast. Crank was bent, already ground .0002 under bottom tolerance. They would not under any circumstances help me out at all! I have also found if you use a girdle it needs to be steel for 2 reasons, first the difference in expansion & contraction & second dis-similar metals corrode even in an oil pan. A steel one is ok but I've had bad luck with them being too stiff. Run the 351(408) with the 2 bolt & some really good machine work, have ARP main studs installed & align hone it, I think you'll be suprised in it's durability. If you're gonna get wild... the sportsman block is a good choice as is a Mexican block. As for my preferance in kits... Scat has about the most affordable ones out there as far as a quality viewpoint. I have a Scat 4.5 for a BBF & it's a beautiful piece! Exactly as I wanted it & at a good price.
70 Cyclone Spoiler 429 SCJ 4:30 Drag-pak
65 Mustang show car one-owner Un-restored
65 Mustang one-owner
66 Mustang 8-second street legal drag car
90 GT next drag car
68 Hurst Olds 455 4-speed
85 Porsche 944
98 Jeep Wrangler
76 20' E-350 motor home
Too many parts cars to mention
The early W's have sufficient material to do this, if the performance parameters indicate its necessity.
What's the target hp/ci range and what application?
Generally, non-endurance applications up to 1.3 hp/ci will do fine with a correctly built early 2 bolt block...I would recommend having the block line honed with studs installed and, at the high end of the range, running a good quality stud girdle properly installed.