cch

Well, if the next couple fishing seasons can treat me well, I'm planning on slapping in a turbo 418 stroker in the notchback. But that leaves me to question between a big single or small twins. I understand the principles of how a turbo works, but lack knowledge when it comes to the difference between the two or the pros and cons of either. Not a DD, but gonna keep it a streetcar and hit the track 2-3 times a year. Hoping to have about 1000 ponies at the crank when all is said and done. So, what's your thoughts for my application?

Thanks guys!

Mustang Boy

how about a pair of large turbos(input evil smiley here)

luckythirteen13

either way is good but 1000hp is going to be expensive to make. might be easier with twins with that high of a hp goal but a single kit is a lot easier to fabricate. if you dont mind your exhaust dumping under the engine then just run a single but if you want the exhaust to exit the car out the rear you might have trouble running the 5" DP from the turbo out back. a tubular k-member would be the first step......if not a motor/tranny plate

cch

I'm well aware of the cost, or I think I am anyhow. So far my budget is looking in around the 20 k range (Canadian). And ya, I'm kind of a fan of the exhaust out the back....you're saying this won't be possible with a large single? Also, in which setup will I experience less lag, and which can I expect to get more power down low? Thanks guys!

luckythirteen13

well i believe i saw you mention its a 418 motor. if this is the case just go with a single. less parts to buy, less piping to run. if you look in my sig where the downpipes run over the headers and down the firewall, that will be impossible with a 5" DP. you will have to buy a tubular k-member or motor plate and run the DP under the header primaries. from there it will need to split into dual 3" or 3.5" and run out the back. you might be able to run 5" all the way back but im not sure.

you have a 418, youll have plenty of power down low. even still, a properly sized single will spool just as fast as twins. remember, with twins, although they are smaller and are easier to spool, only half the exhaust passes through each one. with a single, all 8 cylinders are feeding it so it will spool just as fast assuming its sized right for your motor/application. with 1000hp run a 2.73 gear or so and itll spool just fine down low. trans brake is also a great way to eliminate any lag.

cch

transbrake haha Standard all the way baby. I'll stick with the tk0500 for now and when she blows we'll talk about a Jericho. Thanks for all the info lucky, really appreciate it. Ya, I'm looking at a tubular k member from UPR as well as A arms and coilovers.

TrimDrip

I don't think a 418 is going to experience much lag. I seen an article a while back where a stock block 418 made 700 hp with 5 lbs. They were building a 200 mph car. It had 66mm I think. They thought a 70mm would be to much. 700 seems to much to me anyway for a stock block.

cch

Anything I've read says not to go over 500 with a stock block. But we won't have that problem, CHP is gonna take care of that

TrimDrip

A marine block would do better than 500. They are hard to come by though. What times do you expect to run?

QuarterHorse00

Going 418 cubes is going to be a Windsor block and they can go over 500 horse without issues. There are guys Bob Kurgan has put a tune on that are at 800rwhp on a STOCK windsor block. It's all in the tune and how you take car of it.

This being said I would go single turbo for reasons stated above.