Stig's new engine.
Discussion
Stig - I have been considering a Roots-blown small-block for my next project. Could you do me a HUGE favour and measure the distance from the frontmost part of the pulley setup to the rear of the valvecovers (ie the total overall length of the engine)? Failing that, the distance from the front of the blower to the *front* of the valvecovers, I can work it out from that!
What width blower belt is it?
Like your site btw, very informative! Annoyingly though, I now want an Ultima
(even though I know I can't afford one!)
What width blower belt is it?
Like your site btw, very informative! Annoyingly though, I now want an Ultima
(even though I know I can't afford one!)
'fraid not yet mate. Had no chance to go and pay my baby a visit over the weekend (it's not stored at my workshop). Will try this week, but can't promise anything.
Why not drop Gail at American Apeed an email? He's bound to have all the dimensions. I'll email you offline with his address.
Why not drop Gail at American Apeed an email? He's bound to have all the dimensions. I'll email you offline with his address.
Beautiful engine. Wait till you start up your new engine the Blower Whine will be deafening. The one nice thing about installing a blower is the compression must be lowered compared to a normally aspirated engine. This will facilitate the use of a milder cam which will produce a better idle. The whole package is known as a blower set-up.
You can set it up with a more radical profile to the cam, exspecially on the intake, but this would be insane on the street.
Im very curious. I have been reading through the forum section and have not heard of anyone wanting a smaller engine. You can build a very nice 330 cubic inch engine. Lightweight crank. forged 10:1 pistons. heavier profile to the cam, lightened flywheel. Top it off with a 600CFM Holly vacumn secondary carb. The result is an engine that will rev higher than the high horse muscle blocks, decent gas mileage and be bullet proof. Has anyone taken this approach?
You can set it up with a more radical profile to the cam, exspecially on the intake, but this would be insane on the street.
Im very curious. I have been reading through the forum section and have not heard of anyone wanting a smaller engine. You can build a very nice 330 cubic inch engine. Lightweight crank. forged 10:1 pistons. heavier profile to the cam, lightened flywheel. Top it off with a 600CFM Holly vacumn secondary carb. The result is an engine that will rev higher than the high horse muscle blocks, decent gas mileage and be bullet proof. Has anyone taken this approach?
How much horsepower and torque would this approach put out if done correctly? Would this be a better performance package for the Ultima GTR, or would an Ultima be better off the with the good ole cubic inches? When I build my Ultima, I want at least 600 horsepower but I want my engine to have a broad powerband.
keithl said: ... Im very curious. I have been reading through the forum section and have not heard of anyone wanting a smaller engine. You can build a very nice 330 cubic inch engine. Lightweight crank. forged 10:1 pistons. heavier profile to the cam, lightened flywheel. Top it off with a 600CFM Holly vacumn secondary carb. The result is an engine that will rev higher than the high horse muscle blocks, decent gas mileage and be bullet proof. Has anyone taken this approach?
Up untill about a couple of years ago a lot of owners were happy to go with a stock 350HO. I think now with the factory pointing virtually all customers in the direction of American Speed. They see their price list and can not resist.
WoW. What did I start here. The idea behind suggesting a smaller engine was to make the car more fun to drive. I live in the states but my parents use to live in Chichester. With your gas prices and narrow twisty roads why not take advantage of that and create a high revvving great sounding engine. I do not have access right now to the software package to produce HP and torgue figures, but a reasonable 300-350hp net! would not be out of the question. This is going to create a big buzz on this site. But a 350-400HP engine from carb to pan can be built for under $3000 easily. You can spend alot more if you start with a bow-tie block, or aluminum but why?
OOPS!! Sorry ultimalover I forgot to answer your question. 600HP with a broad power band? You will need to spend major dollars. UHH Pounds, to produce that kind of power. In order to achieve 600hp you will have to abandon any kind of idle quality. 600hp with a broad power band could be achieved through fuel injection and a double turbo system. With a proper engine management system you could do it. A typical NASCAR set up could put you into the 700HP or more with a single carb and aluminum block, Dart heads Blah,Blah,Blah. I am telling you from experience do not chase HP figures chase driveablity. Hope that helped. Any more questions.
Keithl - you're right in some respects, it's not cheap, but the reason going with a blower was to get a heap more power without having to max out the tune of the engine.
And of course, with better idle characteristics and almost linear power throughout the rev range. I hate revvy engines which you have to wring the tits off to get the 'thump in the back'.
HP wins pub conversations, torque wins races. I've got 600 and 580 respectively.
Regarding the noise, well, we'll have to see but I'm installing 'some' sound proofing as well as the heatshield matting which deadens it a bit.
As to why I ended up spending way more that say, $3000 for a stock motor, well:
1. Due to the increased general awareness of Ultima's monster powered creations by the masses, public perception means that they're generally expected to have 500+ BHP (see various magazine reviews/TV slots for examples).
2. Because of 1, it will undoubtedly help sell the car (should I ever have to) when it has 600hp (supercharged) rather than a stock 350 engine.
3. Because I can.
And of course, with better idle characteristics and almost linear power throughout the rev range. I hate revvy engines which you have to wring the tits off to get the 'thump in the back'.
HP wins pub conversations, torque wins races. I've got 600 and 580 respectively.
Regarding the noise, well, we'll have to see but I'm installing 'some' sound proofing as well as the heatshield matting which deadens it a bit.
As to why I ended up spending way more that say, $3000 for a stock motor, well:
1. Due to the increased general awareness of Ultima's monster powered creations by the masses, public perception means that they're generally expected to have 500+ BHP (see various magazine reviews/TV slots for examples).
2. Because of 1, it will undoubtedly help sell the car (should I ever have to) when it has 600hp (supercharged) rather than a stock 350 engine.
3. Because I can.
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