1967 Buick Riviera 430 370 HP on the dyno by Mark Boice Scared Shiftless'
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- Опубликовано: 18 окт 2018
- Big Dyno day for the 430 Buick with stock exhaust, intake and carburetor. Mark Boice at Scared Shiftless explains the the process. Only modifications was to install roller camshaft and lifters, and better oiling system.Should to get at least 350hp and 400 plus in torque.
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What a strange dyno session. Pulled 377 at 5000 and it got no mention. And it was still climbing. Should have done another run at 5200 to find the peak.
Would have liked to see the engine ran with headers and a 2.5" exhaust system. Stock manifolds held this back a little.
It was rated a stock 360hp
The 430-4 was rated at 360hp and 475 torque at 3200 RPM. Timing was set at 2 1/2 BTDC and run off manifold vacuum which is weird. Good engine but had top end oiling issues(solid pushrods) which were remedied by 1970 when the 455 debuted.
Nothing lucas oil stabile cant remedy
Oiling problems possible only above 4000 rpm
Would have loved to hear just the engine on those dyno pulls. Talking over a Quadrajet at w.o.t. should be illegal.
What was the cam specs? Or grind number so i can look it up.
I would still like to know what was the specs of the camshaft run in this, especially duration @ .050s.
Timing.. 😈 they love timing. People freak out when they hear where my advance settles at... 🤣 😶 runs like a scalded dog!
Currently building a 430. Where can i find engine hardware kits??
TA Buick Performance.
Don't do it, too expensive for such lil gains unless u want a numbers matching block
360 is the base hp anyway....whats the big deal about 370 ?
...built an engine WITH CAST EXHAUST MANIFOLDS??? Why on God’s green earth did y’all do that?
Buick 430 was a weak engine. Didn't like to rev. Great "glug-glug" power boat sound, though. Which was great for the '60's era of land yachts, like the '67 - '69 Rivieras. Other than that, not a whole lot you could do with the 430. Kind of a mediocre design. Oiling issues...(oil galleries too small?). Which is why you never see a high-end hotrod with a Buick 430 build.
The 430 wasn't made to rev. If you'd ever owned one you'd change your mind about it being a "weak engine".
Say What, I've Seen, Heard, and Smelled a 67 Rivi GS Rip a Posi for nearly 2 NYC Blocks...
I saw a funny car with a 430 in it well north of 1000 hp
I'm a devout Ford man and I beg to differ. I won many bets on my high school friend's 69 Wildcat with a 430 engine. I've seen him spank many 454 Chevelles and 429 Fords, that ole Buick would pull the left front wheel off the ground on launch out of the hole, he didn't spin the tires at all just jumped like a huge frog and usually won too.
In some ways you are right. They are just an under-bored 455, so all of the problems with the 455 apply to the 430. The oiling is a legitimate problem, but can be overcome if you know what to do (a lot of porting and drilling of oil passages and watching oil pump clearances). They didn't like to rev because they were tuned to be torque monsters with a very tame cam. The heads can typically be ported to flow 270/190 with larger valves. With the right modifications, they can easily be spun to 6000, and someone with a lot of know-how can turn them higher. The reason you never see many hopped up 430's is that the 455 came out, and everyone would rather have the extra cubes to start with. The bigger bore also takes better advantage of the large stage 1 valve sizes. Another weak point is the valve train. It's not really that stable, so the newer fast-ramp cam designs that make more power can lead to issues where the engine just won't rpm due to instability. If you use the right spring combination it can be overcome, but then you are always at risk of wiping a lobe with the higher pressures. The roller cams are big money. The other issue is the block itself, which will require a girdle installed as you get nearer to 600hp so the block doesn't break.
The fact is that you can build a really nice and fairly reliable 400-700hp engine out of a 430 with ease, depending on what you want to spend. They excel in a mid-400hp street torque build and are really cost effective at that level. You can use stock rods with ARP bolts, stock heads with some port work and bigger valves, add headers, a medium-sized cam, and tune the carb and timing, and you're there. The biggest issue building them is availability of good pistons.