Chicken Drumstick Posted March 21, 2017 Share Posted March 21, 2017 1 hour ago, neil110 said: Interesting to note that the LS3 is producing peak torque at 4500 rev/min and peak power at 5750 rev/min The LS motors make good torque higher in the rev range. But don't let the PEAK numbers fool you. When the LS1 came out in 1997/8 there was a lot of talk about it making PEAK torque at 4400rpm vs 2500rpm for the out going LT1 (both 5.7 litres, the LT1 being the engine it replaced). Many claimed the LS1 was all revs and no low end and the LT1 was much more torquey. This however is utter rubbish. The stock LS1 makes over 95% of it's PEAK torque from 1500rpm!!!!!!!!! Meaning that at 1500rpm the LS1 makes more torque than a Chevy LT1 V8 did in total. Holding onto the torque at higher rpm is what makes the LS series of engines make so much more power than the LT1 or earlier OHV V8 engines. Quote Link to comment Share on other sites More sharing options...
honitonhobbit Posted March 21, 2017 Share Posted March 21, 2017 Sorry for the hi-jack - god forbid but I'm briefly going off topic! Chicken, I've sent you a few PM's could you let me know you got them please. Sorry for the hi-jack/off topic post Quote Link to comment Share on other sites More sharing options...
neil110 Posted March 21, 2017 Share Posted March 21, 2017 I wasn't trying to make a point about the peak torque, simply noting that the RPM figures were still lower than the post originator was hoping to achieve Quote Link to comment Share on other sites More sharing options...
Chicken Drumstick Posted March 21, 2017 Share Posted March 21, 2017 14 minutes ago, neil110 said: I wasn't trying to make a point about the peak torque, simply noting that the RPM figures were still lower than the post originator was hoping to achieve My mistake. And yes you are correct. The LS6 (the more sporty version of the LS1) revved to around 7000rpm IIRC. So it can be done with a production OHV engine. But the case of the RV8, it was just never designed for that kind of use. Quote Link to comment Share on other sites More sharing options...
neil110 Posted March 21, 2017 Share Posted March 21, 2017 No worries, it is easy to mis read or mis interpret the intention behind a post. No offence taken. There is a testimonial on the Turner engineering website about one of their engines running at 7000 rev/min and producing 412BHP at those revs, but is running on a petrol/avgas/toluene mix and is fitted to a dragster. The OP was hoping for 7 - 7.5 which whilst possible one wonders at what cost and really whether it is worth the expense for an engine that will probably be horrible as an every day drive. The RV8 is no silk purse but it is entirely possible to make a sow's ear out of one Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted March 22, 2017 Share Posted March 22, 2017 Unless your goal absolutely must include a Rover V8 there's far easier ways to arrive at the same goal. Quote Link to comment Share on other sites More sharing options...
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