Need help deciding on an engine for the turbo project... Well, i have decided to not go the 383 route because of the rpm limit and the rod-stroke ratio. Also, a 6.0 rod with a 383=expensive pistons. So i have decided on either a 406 or a 377. Now just to let you know, i am getting a bow tie block pretty cheap so boring and that stuff isn't a problem. I have it narrowed down to three choices: - 406 with either 5.7 or 6.0 rods - 377 using a destroked 400 block - 377 using a big bore/350 block combo Could someone tell me the benefits of each. To let you know i am looking for nine's, period. And a maximum redline of 7000 with peak power around 6500. Thanks for all your help. |
I would use a 355 but if you already have the bowtie block go with it. Give speedway a call and talk to bill he can probabily give you the best advice on what engine to use. I assume this is a street car. I'am going with the 355 because its easy and cheap for me and will make power to put me in the 9s with ease. |
Well, I have done lots of research and one thing I learned is that the long rod is always better. 377 are super for revving but if you want to see 7k as your limit, than a 406 is going to suit you fine. youll have more torque in the range you want to be making power. As far as starting earlier as compared to a 377. Of course the 377 will wrap up quick Im sure. These are my opinions and why I ended up with a 406 instead of a 377. Im sure others will have different input. Im far from being an expert engine builder but know enough to be dangerous. https://www.thirdgen.org/messageforum3/wink.gif ------------------ -86 IROC Vortech stuffed EFI 406 in progress -=ICON Motorsports=- [This message has been edited by Guido (edited September 24, 2000).] |
https://www.thirdgen.org/messageforum3/biggrin.gif https://www.thirdgen.org/messageforum3/biggrin.gif https://www.thirdgen.org/messageforum3/biggrin.gif ------------------ 1989 Formula, 383", DFI, Mini-Ram, S-Trim Vortech, blah, blah... Best ET: 10.796 @ 125.8 mph TURBO 406 PROJECT STARTED!!! Other expensive hobby: assault weapons/shooting sports Employed at: Hahn Racecraft Accel EMIC/DFI Tuning Turbosystems & Custom EFI Member of Midwest F-Body Association http://www.mfba.org |
i'll let everyone know how my TT 358ci turns out--i should be firing it up this weekend or next. i've just got some last minute fittings/connections to get. previously it was a twin turbo 350ci but with stock TPI intake, mild 440/465 lift cam, stock replacement heads with big valves. it made 465 rwhp in this configuration with no intercooler and on 93 octane. shooting for 550+ rwhp this time around with a miniram intake, DFI w/ variable injector controller, custom grind cam, Dart Sportsman II heads and other goodies. as soon as i figure out how to do the intercooler, i can get a 3 bar map sensor and crank the boost up a little higher for some serious power... ------------------ Jeff 99 T/A WS6 A4, RKSport lid & free EGR mod 88 GTA twin turbo 358, forged crank, forged H-beam rods, Wiseco reverse dome pistons, Dart Sportsman II 72cc heads, Comp Cams custom grind blower cam (.560/.586 lift, 232/236 duration), 1.6 roller rockers, TPIS mini ram intake manifold w/ Accel 58mm TB, 83 lb injectors, Accel DFI computer with variable injector controller, 2 Garrett T04B "hair dryers" with dual Garrett wastegates, TH400 tranny with BTE transbrake and Art Carr custom converter, F*rd 9 inch rear w/ 3.50 gears, and more... |
keep us posted twin turbo |
I think i am going to give Bill a call at Speedway. In his 8 second street vette, he used all bow tie stuff, except for rods/crank, and made a very fast motor. this would be great for me since i can get mass discount on GM Performance parts. i'll keep everyone posted on what i am doing. Just to give a rough estimate, this car wont be done for about 2-3 year. |
That same vette know has a 1600hp 410 SB with one turbo and he says will go 7s at bristal and he claims he drives it on the street alot WOW. |
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