Silverado350TBI

I have decided on getting a 3rd gen F-body and using it as a 'recreational vehicle'. I know a couple of instances where i can get one real cheap, (bad motor blah blah blah). Theres also a little company called MARK's PERFECT ENGINES (or some other dudes name) that seels a crate 350, rated at 435hp for about 2500$. The thing is, say I start with a 305f-body... what rear end mods would i need to do in order to pull it off/ and will the stock radiator be enough to cool it sufficiently, seing especially sinces its bored over (but only 30 over)?

O2BQIK

You'll want a 12-bolt to hold that kind of power. Look into Strange and Moser.

Silverado350TBI

If I put in a 12 bolt, what all would I need though? New, differential, gears, axles, like specifically/ what would it cost to handle around 430hp? would the stock axles handle? Or woulda i need to get new axles... also, what about tranny/driveshaft: If i get an auto, would the stock 700r4 be enough, or what mods would I need to do?

Silverado350TBI

Did you notice on your sig... it says 91' Rs... with 10 rear wheel horsepwer?

xpndbl3

iTrader: (5)

Or you could always use a 9 bolt borg-warner rear end. My buddies held up into the low 11s with no problem.

88 427 Camaro

A 9 bolt will handle that. I've had mine for 3+ years now behind my 500hp big block. The 9 bolt will be less than 1/2 the cost of a 12 bolt or 9 inch and contrary to what many believe, parts for 9 bolts are available including gear ratios to 4.10 and series 3 posi carriers. All the info is on my page at www.koolmeister.com

Miles

Silverado350TBI

will i need new axles/ driveshaft and or tanny mods?

88 427 Camaro

Mine is completely stock (axles, posi and all), save for the 3.73 gear set (which use to be a 3.27).

Miles

SoCo80p

iTrader: (5)

man thats unbeliveable turning those kinds of numbers on a stone stock rear! are you running slicks or just radial tires? if that 9 bolt can handle that kind of abuse im sure a stock 12 or 8.5 ten bolt can get into the 9's!