looking 2 MOD (need HELP)

dutman98 · Nov 6, 2009

I have a 1998 mustang GT auto. 4.10's full lenth headers, prochamber, and dumps. I also have a ebay ported plenum and tb? dont ask. my engine has 125,000 miles and still feels pretty strong. Im looking to do the pi swap. I think im gonna get the new trick flow heads and cms stage 2 cams as a package. I was wondering would it even be worth it to use my engine that I have now? Or should I get a short block or something? Im trying to get all this done for a decent price but I know that performace costs. Would I need a stall with the stage 2 cams. If so what company has good stalls? I want to get the work all done by a local speed shop here in Iowa because I really dont have the time to work on it with work being so crazy lately. Any Ideas or suggestions? Also whats the deal on the diffrent chamber sizes the got for the trick flow heads.
someone school me!!! :tongue3:

GaryG · Nov 6, 2009

i did the pi swap on my 148k mile npi block, i think its worth it. 1 of the guys on here has cms stage 2 n/a cams, he said a stall wasnt needed but he'd recommend it.

Dalamar · Nov 7, 2009

The trick flow heads are an excellent choice.

The mdular block is very strong & hard. U can definately reuse it.
If ur planning on getting into the shortblock, u at least want new rods. They are the weakest link.
Or look at a rotation assembly appropriate for your power level/goals.

duff daddy · Nov 7, 2009

Go ahead and do the swap but realize thoes cams will need to be spun to make good power high like 5800+ normall. Also that motor with thoes miles will probibly start to bleed some oil so if I were you, I would just bite the bullet and just get the short block freshend up, cleaned up with new rod/piston combo and use your stock crank. You will be fine.

dutman98 · Nov 7, 2009

Im shooting for 300hp and want to add a 100 shot later down the road. I really would like to get the MMR 850 stroker short block but If I can get by with my npi block that would save me some $. Who makes stalls for our tranny? Would I need a tranny cooler? Hey duff, How would I get my rpms to spin above 5800? Could a tune adjust that for me?

http://www.bcatransmissions.com/ Talk to Darrin for Trans work.

If your going to put spray to the motor You can keep the npi block, *its the same as a pi just different internals* personally id just get some good interals and build your npi block.

Cams will move the hp range, and stoner bottom end components will help to get sastisfacotry results and keep it together longer then a stock rod

DropTopPony · Nov 7, 2009

Darrin at BC is who will be doing my trans and he does excellent work.

If you plan to use the Trick Flow heads then most PI cams will just not be enough. Get a set of cams made for those heads to get the max benefit.
www.modularheadshop.com http:// is making cams just for the TF heads and if you buy the heads off Nick i think he gives you discount on the cams.

Do a compression test on your engine and see what shape its in.
You might be able to slap on the new heads/cams/intake get a tune and have that last a few years while saving for a fresh shortblock.

dutman98 · Nov 8, 2009

thanks for a the replys. I think I might just get a compression test and see if my engine is still strong. If not than I will get my engine rebuilt with new rods, pistions, and crank. What about the two diffrent chamber sizes? 38cc and 44cc what would be the best for my setup. Why are they diffrent?

duff daddy · Nov 8, 2009

you wont need a new crank, stock gt cranks are more then enough and will be all that I am using.

CC size is real important for 1 air volume ovbiously but 2 compression ratio will be effected by this. JUst like how when swaping from NPI heads to PI heads the compression ratio will be effected ..... see teh size difference.....
42cc: 1999-2004 Mustang GT (PI)----51cc: 1996-1998 Mustang GT (Non PI)----52cc: 1996-2004 Mustang Cobra

dutman98 · Nov 9, 2009

Thanks for clearing that up for me. So the 38cc must be for forced induction. I would probablly go with the 44cc pair then. correct? Thanks for the link DropTop. I thinking I might pick up one of there ported pi intakes with the second cooling sensor already tapped. Im going to give them a call sometime this week and ask them about there stage two tfs specific cams also. Again thanks for all the usefull info guys. :thumbsup: