need opinions on my 331 combo please!!!
- Thread starter twstd50
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mstangfrk95GTS!
New Member
- Mar 20, 2004
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well the heads were free and have less than 20k on em and im building it for torque as a main goal....
plus i can always buy some different heads later, im throwing all the dough at the shortblock.
i figure to hit 300rwhp and then if i can swing some alum heads later then so be it.
looks like im gonna order a new cam, now anyone want to buy the 2031, still new in box.
plus i can always buy some different heads later, im throwing all the dough at the shortblock.
i figure to hit 300rwhp and then if i can swing some alum heads later then so be it.
looks like im gonna order a new cam, now anyone want to buy the 2031, still new in box.
SN95_XB331
New Member
I have a similar setup too, BUT had comp custom grind me a "274 equivalent" for 1.7 rockers (and boost friendly 
)... Since you're at 10:1 C/R (I'm at 8.5:1 too), it will be pretty responsive off idle--I had to bump timing (15^ base) due to low CR and it's still very stout compared to a 302.
The cam will sign off around 6000 rpms on a 331, so the TH intake should be a good match. You'll need to set idle to around 800. It will have a slight lump sound, and a smooth idle if it's set to >=900rpms. I'd keep the Pro-M and get a powerpipe. Having a matched MAF and injectors will be key in tuning (mine idles/cruises like stock, etc...). Also get a pushrod measurer as you should check rod length after install. If you go 1.7 rockers definitely check P/V clearance.
You will like the cam. Your plans should get you over the 300whp goal.
The drop off in the graph looks like the cam. Remember HP is calculated from TQ numbers--was timing being advanced? (looks like SPOUT was out)?
)... Since you're at 10:1 C/R (I'm at 8.5:1 too), it will be pretty responsive off idle--I had to bump timing (15^ base) due to low CR and it's still very stout compared to a 302. The cam will sign off around 6000 rpms on a 331, so the TH intake should be a good match. You'll need to set idle to around 800. It will have a slight lump sound, and a smooth idle if it's set to >=900rpms. I'd keep the Pro-M and get a powerpipe. Having a matched MAF and injectors will be key in tuning (mine idles/cruises like stock, etc...). Also get a pushrod measurer as you should check rod length after install. If you go 1.7 rockers definitely check P/V clearance.
You will like the cam. Your plans should get you over the 300whp goal.
The drop off in the graph looks like the cam. Remember HP is calculated from TQ numbers--was timing being advanced? (looks like SPOUT was out)?
pkstanger
New Member
twstd50 said:
What heads are you running???
I'm running a smaller cam and twisted wedge heads and I pull 324rwhp and 362 rwtq. I might believe your numbers if you were running stock E7's.
I'm have twisted wedge heads on there.
The 263 number was with a really small cam and the TFS Street heat intake. I haven't had it on the dyno since putting the XE274 and Track heat intake on yet.
my hp peaked at a really low rpm and I and some others were thinking it was definately because of the old small cam and intake.
Keep in mind, my aode robs lots of power...
The 263 number was with a really small cam and the TFS Street heat intake. I haven't had it on the dyno since putting the XE274 and Track heat intake on yet.
my hp peaked at a really low rpm and I and some others were thinking it was definately because of the old small cam and intake.
Keep in mind, my aode robs lots of power...
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