What do I need to do to build a 1000hp turbo small block

doogievlg said
I’ve never built a sbm to failure but I was planning a 700 hp build two years ago. I saw enough evidence on here to convince me that my block wouldn’t live long at that power level. I then talked to two reputable builders and both said the limit for a sbm is right around 600/650.

Well, your 2 reputable builders are wrong. You spread a myth, an incorrect myth. This is why the internet is so dangerous.

Hemirunner said
Everyone has their opinions and it’s the same with the big blocks. They argue it all the time. For an NA or nitrous combo, the threshold is lower than with a turbo combo so those comparisons don’t translate directly. Obviously the R3 block would be preferable but a turbo sbm with some steel caps and a short fill would live at 800whp. Staying stock stroke would be even better. Just my opinion.

Finally a voice of reason. With a good intercooler and an even better fuel injection set up with a safe tune a stock block small block Mopar will take 1000 anytime. I've done it. And much more. Stock stroke is always a good idea because its lighter and less stressful on the block. I would say if one was really careful on parts purchases you could build a long block for under 10K pretty easy. I spent 7K on heads and valve train that really wouldn't be necessary at that level. A set of ported Eddy RPMs and LA rockers from comp would do the trick and save a ton of money. I made over 1000 with a small solid flat tappet cam and Mopar W2s.