Kicking around turning my Steeda GT into a B headed 4V

[scottydsntknow]

Not sure this is the right forum but since its about a B headed 4V I'll roll with it.

I just picked up 2 B headed motors for $500 today. Both need rebuilt but are in good condition. One is a fully dressed Cobra motor with FRPP shorties and BBK TB but with a Mark bottom (cast crank boo) and the other is a regular Mark VIII motor. My 2V has a spun rod bearing and I have found someone who has the 4V brackets for my Novi 2000 that I need to do this swap.

Was going to get them to use one of the Teksids in a 2V rebuild but they were so cheap and now that I have all these parts and found someone with the blower brackets I need...

You guys see any reason I shouldn't swap? Reasoning is that the B heads are going to way outflow the stock PI heads I was going to use, I don't need to buy cams now, I don't need to buy another plastic intake now, I've got the front assembly and everything... I know the B heads are not the best but the SN95 Cobra intake is the prettiest intake out there IMO and with a Novi cramming a ton of boost down their throats I think they'll do ok.

 

[2DXTRM]

Not a bad swap at all IMO. Do your homework on what harness wires/pigtails etc need to be swapped or extended.
Just freshen the B heads up and upgrade the springs. Make sure the Cams on the one motor are the actual Cobra cams (intake).

The cast cranks will be OK up to a certain power level (usually around 600HP), if you want more or to be safe(r), then get the forged crank.

 

[scottydsntknow]

Yeah I've been researching all that is involved in the swap. Few pigtails and coolant crossover and lengthen/reverse the COPs. Also going to need 4V COPs and convert my rails to returnless or modify some 99-up Cobra or Mach rails.

The cams I have are actually 2 sets of Mark cams so will have to pay for the real F6 Cobra cams. Cranks... well I am planning on using Boss rods, Manley SpeedPro pistons and shifting at 7K or so. The Novi can support way more than 600hp but not sure I want or need more than that. I now have 3 cast cranks in my garage so I have them just lying around to use...

Yes to new springs and freshen up the B heads. Any specific springs that are a fair price for someone who doesn't need "omg" springs?

Pretty much I want to have a solid 500rwhp until I upgrade my fuel system and transmission. Currently running a real low mileage original T45 and the Steeda installed 42lb injectors.

 

[nomoretickets]

If you are going to boost it, and are planning on tearing down the shortblock already, you might as well just find a forged crank and do it right the first time. I know your initial goal is just 500rwhp, but the cast crank leaves you very little wiggle room to move up once you upgrade fuel and tranny

 

[scottydsntknow]

I still have never heard of a cast crank letting go that was the actual fault of the crank... Not on a street car making even near the power I will be making and the RPM I'll be turning. Ppl run them up to 650-700 all the time. But yes its one less thing to worry about if I go forged. I've been keeping an eye out for a deal. I am still pissed I sold my old Teksid and forged crank when I thought I was done with 4.6s... oh well. Will also be going straight to 60lb injectors, looking for a Termi fuel tank setup and getting a BAP for this thing.

I just dunno if a forged crank is really needed with basic forged pistons and Boss rods that won't take much more than 700hp anyway. I'm not building this as a 4 figure power car or anything, I'll likely never break 600hp TBTH.