depends what the balancer can handle. unless it was an SFI balancer i wouldnt spin it much past 6000 anyway.I haven't looked at the specs but maybe it's the camshaft. If forged internals it def can pull more rpm safely. If the heads and cam are to small it may just be peaking there. I'll have to look it up and have a better idea what's going on with it before having an educated answer.
id like to see some one do a bad ass 427 with a set of P38's on them for a street car. id think you could make near 850NA depending on the fuel you can get for it.
Wow! After looking up the specs on this build why would ford even offer that engine with those heads?? Those heads are barely exceptable on a 302. Then throw another 125 cu in under them...what??depends what the balancer can handle. unless it was an SFI balancer i wouldnt spin it much past 6000 anyway.
and as for the motor. i couldnt see building a boss blocked 427 and running GT40X heads. id have to do something that would be up to the task for what that bottom end could do...
Oh I agree 100%Street motor or not, a 427 can use a large cylinder head, i think anyone putting less than a 225 on them is really wasting their time/money. It will make more torque than you can use at low rpms because of the cubic inches anyways.
This. My last fox (the Hoopty) was a 427 with AFR 225s on it and it was hard to handle past 1/4 throttle on the street.Street motor or not, a 427 can use a large cylinder head, i think anyone putting less than a 225 on them is really wasting their time/money. It will make more torque than you can use at low rpms because of the cubic inches anyways.
Wow! After looking up the specs on this build why would ford even offer that engine with those heads?? Those heads are barely exceptable on a 302. Then throw another 125 cu in under them...what??Just stupid. A healthy 427 needs at least a 205cc head and that's usually not enough(unless it's only a street setup) at least throw the Z heads on it Ford! Wth.
The 11r head actually has more ptv clearance due to the valve angle than the older tfs heads. Still on that shortblock and a descent cam I'd go bigger than 205cc heads. Like Afr 220's or tfs 225's. No point in choking that engine. Heck look at NiKwoaC's 302 build. He's got cnc 205 heads and a mild cam on a stock 302! Almost impossible to put "to big a head" on a 427Well I really want the new trickflow 11r heads but I was concerned with piston to valve clearance with them.the short block comes with 17cc dish pistons already.do yall think I can get by with that cylinder head.
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