Her69fastback 3 Report post Posted August 2, 2023 I found a speedmaster 351w block stroked to 427. Is speedmaster blocks any good? It’s a new block only. Quote Share this post Link to post Share on other sites
rwcstang 201 Report post Posted August 2, 2023 32 minutes ago, Her69fastback said: I found a speedmaster 351w block stroked to 427. Is speedmaster blocks any good? It’s a new block only. is this new? used? from where? I didn't know speedmasater made blocks, however its odd it doesn't say where these blocks are made at, so I think these are made over seas (taiwan or china) and they are machined here. looks like a DART SHP copy cat block, thats a huge risk to invest in, since Speedmaster always had QA issues with their intakes, and most of their stuff is made overseas. Best to go with something you have locally or invest in Dart or World Products where QA actually means something there. I have the World Products Man-o-war block stroked to a 427w from prestige motorsports, best investment I made. Quote Share this post Link to post Share on other sites
Her69fastback 3 Report post Posted August 2, 2023 It’s a new block. Has never been assembled Quote Share this post Link to post Share on other sites
Rsanter 152 Report post Posted August 13, 2023 As far as I know Speedmaster is made in China and machined in China. i have heard good and bad on them. most people that say they are good say they need a fair amount of clean up and prep work. the people that say they were bad said about everything bad including the box it was in Quote Share this post Link to post Share on other sites
jmlay 80 Report post Posted August 13, 2023 Any new block is going to need to be gone over and will likely need some machining. Quote Share this post Link to post Share on other sites
