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Aug 28, 2015 11:27:34 GMT
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Hi guys I'm from Australia and having a bit of trouble finding info on the 3.5L Rover engine I recently bought a '74 P6 and was planning on using the engine in a '70 CF bedford truck.
I'm after a Lumpy Note,on the verge of obnoxiously loud, Torquey and Able to tow, Want it to be a bit of a showpiece too.
Any advice or limitations of the engine that I should be aware of?
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fogey
Posted a lot
Posts: 1,591
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Aug 29, 2015 19:02:45 GMT
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Aug 29, 2015 20:10:26 GMT
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A Holden 308 or Chev 350 would make more all round and would probably be easier to get approved?
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A Holden 308 or Chev 350 would make more all round and would probably be easier to get approved? Probably right there getting it approved would be the same and parts cheaper and easier to get, I just wanted something different and thought I'd go with an all english build sort of. |
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Maybe start with a P76 engine if you can find one, it's difficult to make a lot of power from the 3.5 without spending a lot of money, unless you go for turbos
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Maybe start with a P76 engine if you can find one, it's difficult to make a lot of power from the 3.5 without spending a lot of money, unless you go for turbos mmmm...Thanks Dodgerover I'll have to do a bit of research. Might have to leave the engine in the P6 for now. |
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sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
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Rover P6 3.5 L V8sowen
@sowen
Club Retro Rides Member 24
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Normally when trying to get more power out of the 3.5 people take it out, throw it away to drop a 3.9 or 4.6 in  You'd probably get the best lumpy exhaust note from uneven manifolds and true twin exhausts, but it won't be as loud or chest rumbling deep as a larger capacity lump. As for a showpiece, the bare engine can be made to look pretty, then depends on if you like the look of twin SU's, 4 barrel carb or efi? Or just get a larger iron block V8? |
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Aug 30, 2015 14:20:01 GMT
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Normally when trying to get more power out of the 3.5 people take it out, throw it away to drop a 3.9 or 4.6 in You'd probably get the best lumpy exhaust note from uneven manifolds and true twin exhausts, but it won't be as loud or chest rumbling deep as a larger capacity lump. As for a showpiece, the bare engine can be made to look pretty, then depends on if you like the look of twin SU's, 4 barrel carb or efi? Or just get a larger iron block V8? There was some method to my madness the 74 block is emission free and the truck is too,there was lots of pretty alloy and offenhauser make some nice intakes and rocker covers. I wanted to use the 4 barrel manifold and then use the crossover twin sidedraught weber adaptor and I was hoping to not have to upgrade my brakes from drums to disk (They are big drums). I'll have to go and talk to an engineer before I get too serious. I kind of had my heart set on the rover engine just thought I better investigate before jumping in head first. Thanks again for the input! Much appreciated |
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Aug 30, 2015 19:32:42 GMT
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Hi guys I'm from Australia and having a bit of trouble finding info on the 3.5L Rover engine I recently bought a '74 P6 and was planning on using the engine in a '70 CF bedford truck. I'm after a Lumpy Note,on the verge of obnoxiously loud, Torquey and Able to tow, Want it to be a bit of a showpiece too. Any advice or limitations of the engine that I should be aware of? Yes, that's all do-able. Whilst it's true that you'll get more power and torque from a 3.9 or 4.6, or a SBC or SBF, that's not really the point. The right cam, exhaust manifolds and relatively unsilenced pipes will give you the sound you're after. If you don't rev over 5500ish the whole thing will stay together without any problem. I rev mine to 6200 with just ARP main studs and big end bolts and a lightened flywheel. I've got Rhoads lifters but am not impressed with them. I've also got a Holley, and that's pretty poor too, but looks the part. Go for it! |
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V8 MGB GT sprint and track
V8 Ford Pilot Woodie project
1971 Early Bay VW camper
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Aug 30, 2015 20:15:18 GMT
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Hi, As you're in Australia, leave the engine in the car until you're ready to do the swap. Over on the classic Rover forum there was a guy doing similar and the engineer overseeing the swap wanted written proof of the engines age for emissions reasons. The owner had just bought an engine and so didn't know and was after proof of age or where to get. It all got too much and he went another route.
Colin
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Aug 30, 2015 23:36:39 GMT
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Thanks Docjohn I needed a bit of encouragement  I was planning on using a four barrel at first I've heard/witnessed rochester carbs working really well they have tiny primarys and massive secondarys so theres a chance you can save a bit of fuel if you grandpa foot it. Thanks colnerov I'll keep it in there and try and get some written proof I saw the owners manual in the car hopefully its a match, I could check with Vicroads but I'm beginning to think they lose older cars records on purpose. That'd be frustrating if the swap was done. |
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I was planning on using a four barrel at first I've heard/witnessed rochester carbs working really well they have tiny primarys and massive secondarys so theres a chance you can save a bit of fuel if you grandpa foot it.