Procharger Pulley Specs?
Procharger Pulley Specs? I am in the market to put a 408 with a set of 245cc ET heads on my D1 powered car. I am wondering what people are getting for boost with the different pulleys? Any help would be appreciated!
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Depends on how fast you want to go, I would suggest you build or buy a turbo kit. I did a complete build for a customer of mine, Forged stock displacement, AFR 225cc heads, and the max it will see is 12-13 lbs. spinning the D1SC to it max impellar RPM
It really depends on what camshaft you select. A cam with a 112 LSA-114 LSA is going to bleed out more boost than one that has a wider lobe separation. We got an easy 14 psi of boost with a 395 ci, Patriot LQ9 heads and a Lingenfelter GT2-3 camshaft. This wasn't with the smallest pulley we could of put on it either, as it wasn't at max impeller speed. Granted, the Patriot stage 2 heads were no match for AFR 225's, but the difference in a decrease in built boost would be negligible. Bob
Originally Posted by TrakDay
I am in the market to put a 408 with a set of 245cc ET heads on my D1 powered car. I am wondering what people are getting for boost with the different pulleys? Any help would be appreciated!
Thanks
Thanks
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Originally Posted by Exotic Performance Plus
It really depends on what camshaft you select. A cam with a 112 LSA-114 LSA is going to bleed out more boost than one that has a wider lobe separation. We got an easy 14 psi of boost with a 395 ci, Patriot LQ9 heads and a Lingenfelter GT2-3 camshaft. This wasn't with the smallest pulley we could of put on it either, as it wasn't at max impeller speed. Granted, the Patriot stage 2 heads were no match for AFR 225's, but the difference in a decrease in built boost would be negligible. Bob
J&J Stage III forged bottom end 9:1 compression stock displacement
J&J custom blower grind camshaft
AFR 225cc heads out of the box
ATI D1SC kit with twin coolers & SDCE tensioner kit 3.7" pulley
1 3/4" long tubes, custom dual 2.5" exhaust high flo cats
Boost is between 8-9.7 psi
Car made 630 rwhp and your grand mother could drive it to church
What did the large cube engine make?
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Originally Posted by JnJSpdShop
You can design a camshaft on a 114°LSA that has no valve overlap therefore no boost is bleed out. Which is what I did for this car. I really don't see how you are getting 14 psi on a large cubic inch motor unless the heads flow like crap or you have a very restrictive exhaust system. When it is all said and done boost # really doesn't mean much it is RWHP that speaks. This combo:
J&J Stage III forged bottom end 9:1 compression stock displacement
J&J custom blower grind camshaft
AFR 225cc heads out of the box
ATI D1SC kit with twin coolers & SDCE tensioner kit 3.7" pulley
1 3/4" long tubes, custom dual 2.5" exhaust high flo cats
Boost is between 8-9.7 psi
Car made 630 rwhp and your grand mother could drive it to church
What did the large cube engine make?
J&J Stage III forged bottom end 9:1 compression stock displacement
J&J custom blower grind camshaft
AFR 225cc heads out of the box
ATI D1SC kit with twin coolers & SDCE tensioner kit 3.7" pulley
1 3/4" long tubes, custom dual 2.5" exhaust high flo cats
Boost is between 8-9.7 psi
Car made 630 rwhp and your grand mother could drive it to church
What did the large cube engine make?
Originally Posted by TrakDay
How do you think that setup would do with stock heads?
Originally Posted by JnJSpdShop
Honestly I don't have alot of experience with stock heads on these type of combos. We are a race engine builder/machine shop so all of the forced induction cars we do have full built upper and lower ends. Off the top of my head I would say at least 100-125 hp less rear wheel
Originally Posted by TrakDay
ouch... My car is making 550rwhp on the stock bottom end and stock heads at 8.5psi at 7k rpms, as it is now. I was thinking maybe build the 347 and keep the stock heads with more boost, but that 408 still lingers as a nice option as well. Just a lot more to go with a forged 408 than the 347...
