370 or 402
#1
TECH Fanatic
Thread Starter
iTrader: (21)
Join Date: Oct 2006
Location: Everywhere
Posts: 1,105
Likes: 0
Received 0 Likes
on
0 Posts
370 or 402
I've done a few searches and still unsure which route I'm going to go. If I spend an extra $500 I will have enough to build an iron 402, or should I just stick with the 370 and use that $500 somewhere else? My real questions for determination, with the same turbo (like a 76mm), how will spool times compare/contrast with an a4 trans throughout the power band? And if I can get both engines to the same amount of boost on the same turbo, by how much can I expect the 402 outperform the 370? Or will the 402 really only be good for bragging rights and a minimal gain? A setup that kicks really hard in the midrange and carries it out through the top end would be perfect.
Also, I'm unsure if I'm going the turbo or procharger route. I like turbos much more but a D1SC would be an easy install and quite reliable with an 8 rib setup. But I'm heavily considering a RM right now to make it much easier on fabrication, keeping the ac, and keeping underhood temps down; only worries is the oil lines and ground clearance. Perhaps a c6/truck manifold setup if I can find someone local to weld/cut some steel up. My ideal static compression will be around 9.2 and wont be necessary to go over 15psi.
Also, I'm unsure if I'm going the turbo or procharger route. I like turbos much more but a D1SC would be an easy install and quite reliable with an 8 rib setup. But I'm heavily considering a RM right now to make it much easier on fabrication, keeping the ac, and keeping underhood temps down; only worries is the oil lines and ground clearance. Perhaps a c6/truck manifold setup if I can find someone local to weld/cut some steel up. My ideal static compression will be around 9.2 and wont be necessary to go over 15psi.
#3
If you are plannig to run a 76mm Turbo stick with the 370ci engine. There are some T6 Flanged 76's tyhat will work on a 402ci setup, but that size engine is better suited to a 88mm or larger turbo.