Im concerned that my std bottom end is going to fly apart...
Ive got a 302 60" over std heads rods and bolts, Ive put an Elderbrock performer, 650 Double pumper and a bert jones cam (i had to shim under the rockers to get it to run) It doesnt idle under 1800 rpm and ive had the rev limimiter 5500 but on my last run i had a rush of shit to the brain and upped it to 7100 and it loved it never missed a beat. oh yeah its in a datsun sunny burnout car with a C4 and a GTR bango diff 2.78 ratio. It spins in top and holds top on the donut pad, Should i lash out and put ARP rod bolts ?
Think of it like this- 302W is a rather short stroke motor. Shorter stroke= higher allowable revs. I think your stroke is 3in, (about 76mm) where ford mondeo V6 has 79mm (and shared with jaguar AJv6 and astonn martin V12) and they can go as high as 7400 in the aston V12, 7000 in the Jag motor and i'm not sure in the mondeo.
The big thing is how long it stays at those revs. Being a burn out car I'd imagine it would be up there often and for a lengthy time. While i have no experience with windsors (or any motor really) I'd be leaning towards strengtherning the bottom end.
It's all about fatigue- and the life of the fatigued component goes down exponentially when revs go up.
Eg- doubling of strain in a piece of steel can reduce it's life from 5,000,000 cycles to 20,000 cycles before failure. PM if you want more info.
1987 Jaguar Sovereign - Metallic Green
3.6L DOHC 24 Valve
I've known 302s to hold 7,000 RPMs all day with only a valvetrain swap. The ".060 over bothers me, too, but just be sure to bring it back down every now and then to make sure it'll have a chance to rest. Also, make sure you have a kick ass cooling system and you really shouldn't have a problem.
Considering people spin 'em up to 6,500 without any mods, the 7100 isn't bad. ARP rod bolts would be a good idea, for reliability, but the bottom end should hold just fine as long as it's getting sufficient oil (high volume pump, perhaps?)
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