a little help about engines January 13, 2007, 11:33:11 AM Im ganna go ahead and buy a junk motor from pull a part charlotte for 140 dollars, send it over to heinz brothers to be worked over to be trued up for a couple hundred. but i was wondering. you know how the broncos came with a carbed 351? well is that 351 a bulker block or a 302 punched out? b/c if so i'll find a good 302 and punch it out and get a lunati kit for it. and if i were to punch it out, what kind of heads would you recomend, trickflow? windsor? cleavland? stock reworked? and plus what kinda kits are out there for EFI on a 351? Quote Selected
a little help about engines Reply #1 – January 13, 2007, 11:37:09 AM A 351 is a 351. There are EFI kits in some later model truck you can find. You can drop a 351 into a fox, but you'll need a different oil pan and headers.I hope this helps some. Quote Selected
a little help about engines Reply #2 – January 13, 2007, 11:51:05 AM Quotewhat kinda kits are out there for EFI on a 351?You can do that part relatively easy. You can use the setup off a 5.0 with the 351 manifold that is here: http://store.summitracing.com/egnsearch.asp?N=700+4294925239+4294839079+4294908331+4294840125+115&rsview=sku&Nao=0&Ns=P%5FSRE%5FDisplayPrice%7C1#rstopThere are a couple on there that are truck only (the upper is REALLY tall just like the stock unit). You COULD also cut a truck stock upper and shorten it for clearance if your good with stuff like that. Quote Selected
a little help about engines Reply #3 – January 13, 2007, 12:14:36 PM Sheesh... the price of that BXR intake doesn't look so bad anymore. You can "punch out" a 302 to about 352ci. But the most common stroker kit is the 347. Quote Selected
a little help about engines Reply #4 – January 13, 2007, 12:25:13 PM so you mean with just a regular bore honing and a stroker kit i could possibly get like 348ci? thats not too bad. we're not talkin like a stroker kit that'll kill the top end are we? Quote Selected
a little help about engines Reply #5 – January 14, 2007, 02:58:33 PM 347 kit is with an overbore of .030. I think without the overbore it's around 342ci. I don't feel like doing the math. Killing the top end? 302s aren't known for their upper rpm power. That'll depend on your head/cam/intake.... choices.You got some magic number your trying to hit? Quote Selected
a little help about engines Reply #6 – January 14, 2007, 06:19:05 PM my magic number im kickin around is between 350 and 400. im definatly ganna get a highrise cam so once it gets to about 5 grand the powerband kicks in. i'd like to be able to kic it to about 3 grand and clutch kick it get it boilin tires till about 7 grand. i'd really like to build it N/a to rev out to about 8 grand easy. i mean if i wanted to race it at the drag strip i'd want the low end, wouldnt sneeze at a 6 grand redline. think about it like this, im lookin for a track motor. my whole idea is to basically build the engine as if i were to go drifting. its not my bag, its too dominated by import posers, but i'd def want the engine to kick ass if i were to compete, and 8 grand is where i feel the power would be made. Quote Selected
a little help about engines Reply #7 – January 14, 2007, 08:18:33 PM If you turn a stock block 302 to anything above 6K rpm you will split it wide open. Just my 2cents. To build a motor to turn that high would have to be Solid cam and alot of cylinder head. The engine of that caliber will be VERY HIGH Maintance. Quote Selected
a little help about engines Reply #8 – January 14, 2007, 09:10:05 PM QuoteIf you turn a stock block 302 to anything above 6K rpm you will split it wide open.Just my 2cents. To build a motor to turn that high would have to be Solid cam and alot of cylinder head. The engine of that caliber will be VERY HIGH Maintance.There are exceptions......91 town car block, roller cam with about .650 lift, forged crank/rods/pistons, over 550 HP on a dynojet, installed in a 1990 Mustang with a C-6 shifting gears. Seen it. Quote Selected
a little help about engines Reply #9 – January 14, 2007, 09:39:01 PM I'm not saying it can't be done. Just not very good for a street car/ drag car. The power can be made,BUT the high RPM is what cause the blocks to split. I've seen that. Quote Selected
a little help about engines Reply #10 – January 15, 2007, 12:09:42 AM well what if i go with a 351 block say out of a bronco? i'd deffinatly go with internals and heads and cams that would handle it. when i get out of school i will be able to build an engine that goes to 9 grand making about 1000hp N/a ( not that i will unless i compete) but i'd think 450-500 wouldnt be too bad. i want the torque curve to be very consistant but have the hp curve to spike twards 6 or 7 grand. im not talking peaky performance either nice and smooth to 7 grand. im first ganna get a beater truck, and im kicking around the idea of getting a house with a garage with some roomates to work on the car. plus im planning on having the engine professionally assembled and built. im just ganna put the thing together. Quote Selected
a little help about engines Reply #11 – January 15, 2007, 09:52:50 AM If you're gonna rev it beyond 6000 RPM get either a mexican block or a pre 74 early 302. You'll also need aftermarket rods with bigger bolts (3/8). 5/16th rod bolts aint gonna cut it for very long at 7 grand.If you plan on revving it like you say I would forget about anything the factory ever produced and get a R302 block or a DART block. In either case bring money... Lots of it. Anyway, if you are independently wealthy, here's a link to the R302 block:http://www.performanceparts.ford.com/parts/part_details.asp?PartKeyField=2197If you're gonna dream, you may as well dream BIG! Quote Selected
a little help about engines Reply #12 – January 15, 2007, 06:55:10 PM By the way that 7.5 rear will be history.It takes more than HP'Sto make it go.$$$$ Quote Selected
a little help about engines Reply #13 – January 15, 2007, 08:28:39 PM Quote from: kitzdnm;124063By the way that 7.5 rear will be history.It takes more than HP'Sto make it go.$$$$oh i know the 7.5 is trash. im going with either a rebuilt 8.8 or rebuilt 9. Quote Selected
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