Guest Anonymous Posted February 4, 2003 Share Posted February 4, 2003 i've just ordered a motown 400 block and i am planning on making a 434. now it'll all be 4340 in the bottom end with 6" rods, so rpm not a problem. i want to run the brodix 18X's with 11.5:1 compresion or a little more, this Z will be street driven about just enough to make it to cruise night. i was thinking around a 294XE solid roller but would appreciate your input. also does anybody make 1 7/8's headers for a Z? thanks. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 4, 2003 Share Posted February 4, 2003 oh yeah i sold the 406 i built last time around, it ended up making 528hp and 544 lb/trq. but boy put it a triumph with 4.10 gears and promtly blew it up in 2 weekends. it wasnt designed to turn 6800 rpm lol Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 4, 2003 Share Posted February 4, 2003 ok damn, i dont get on here enough, i already posted thisd once. oops sorry, and grumpy, the 18Xs allow me to use all my 23 degree valvetrain or so brodix and my engine guy say. i had plans for the suspension and to finish the cage on out but would like z to be sorta able to handle it. Quote Link to comment Share on other sites More sharing options...
Mudge Posted February 4, 2003 Share Posted February 4, 2003 Even a first gen Camaro wont handle big ponies without a cage, they start twisting and eventually cracking the body. So, yes you need the cage at some point Probably the first thing you will notice is the doors start to get sticky. Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted February 4, 2003 Share Posted February 4, 2003 that 294xe cam looks to be a little to large for a car with any street time, its sure going to be hard on the valve train! and a 434 is normally built with a 4" stroke crank and 5.7" rods and Id stay under 6000rpm as a max with that stroke, now you can make a super torque monster but Id have a long talk with comp. cams BEFORE buying a 294xe, personally Id be looking at something like a xr280r as a reasonable max for a street cam. now theres no doubt that the bigger cam gives you a few more peak hp but the more reasonable 280 roller cam gives you a killer torque curve my computer guesses at 560hp/570 tq with the smaller cam and 580hp/560tq with the larger cam but it says youll most likely have close to 470ftlbs at 2000rpms with the smaller cam and only 415ft lbs at 2000rpm with the big cam!!!! now even if the computers is way off the numbers that differance is huge! in the lower rpms where youll spend most of the time, especially street driven!!!! Quote Link to comment Share on other sites More sharing options...
Mudge Posted February 4, 2003 Share Posted February 4, 2003 I can't really comment on ring wear, which may well be an issue if this is going to spend much time on the street and not be torn down once a year (or whatever), but I know of 4" stroke cars doing 7k RPM just fine. I would think ultimately it depends on how much you care about wear and tear, but Grump has a ton more experience in this area, I can only comment on what I've seen, never built a 422/434 etc Quote Link to comment Share on other sites More sharing options...
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