View Single Post
Old 11-10-2009, 12:34 AM   #11
BossHogg69
motor exploder
 
BossHogg69's Avatar
 
Join Date: Mar 2009
Location: Pittsburgh, PA
Posts: 2,346
Re: Need some engine advice and suggestions...

I agree with the bypass valve (especially if you ever wind it to 7500rpm) and boost referencing the fuel pump. But since you have over 622hp by 5400rpm, no need to wind it that tight! As for the plugs, I'd call Vortec and Dart and see what they say about the gap. Seems like you have a stout ignition system, so I'm sure they will need to know exactly what you're running so they can recommend the right gap.

As for converter/gears, I'm guessing that 2800 stall is probably a little higher behind that 6xx ft-lb, and maybe a little over 3000-3200? For that 276 cam, that is probably about right and easier to deal with on the street than a 4000rpm stall, which would be a beast. I would leave that alone as long as you're happy with the launches. Again, with over 600ft-lbs 3.73's are fine in my opinion, since it's not a race only truck.

I know you just put pipes on that badboy (I'm subscribed to your build thread), but maybe later a 3" exhaust is in order? That's a LOT of ponies huffing out those 2.5" pipes! Then again, you may not want to deal with the extra noise? What size are your header primaries?? They should probably be in the 1.75"-1.875" range with all that muscle. what headers was it dynoed with?
__________________
Adam

1969 Chevy CST/10 stepside, DART Big M/TREMEC Magnum Extreme/3.73's w/Detroit Truetrac
1965 Chevy Bel Air Wagon (daily driver), 327/TH350,10 bolt w/3.08's
1961 Chevy Bel Air Sport Coupe, ZZ454/M21/9" rear w/3.50's & Detroit Truetrac
2005 GMC 1500 ccsb 2wd, 6.0L/4L65e/3.73 G80
2006 GMC 2500HD ccsb 4x4, DMax LBZ/Allison 6spd/4.56's w/Detroit TrueTrac

Use the SEARCH function on this forum - it is your friend!!
BossHogg69 is offline   Reply With Quote