Boring a 305 to 350
WebJan 4, 2008 · The 307 has a slightly larger bore, the same as a 283, and a shorter stroke which it shares with a 327. The 305 has the same stroke as a 350. Aside from that I've read that 307's usually have more or faster bore wear due to the alloy in the block. All things being equal the 305 probably makes power a bit lower due to it's longer stroke. WebJan 30, 2010 · Joined Mar 21, 2003. 2,294 Posts. #2 · Jan 22, 2010. opinions on a 305 bored .30 over. Bored .30 over = 310 cubic inches. Not too sure that the crack would work the block would have to be modified. On a 305 not really worth spending too much $$$$$$. Unless the parts you buy will be swapped over to the 350 engine..
Boring a 305 to 350
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WebMar 26, 2005 · Yes, you can put 350 heads on it but the old ticket used to be to put 305 heads on a 350 as they have smaller compression chambers. As was stated, .060 is the …
WebNov 18, 2024 · Can You Bore a 305 to a 350 If you’re considering boring out your 305 to make it a 350, there are a few things you should know. First, boring out the engine will … WebNov 27, 2010 · Now let's take that 305ci engine and multiply 305 x 1.1 = 335.5 Ib-ft of max torque. We're down roughly 50 Ib-ft.and that's just at torque peak. So a 305 up against a 350 (even at the same horsepower) will always lose to the larger engine because the 350 will make more torque.
WebMay 9, 2009 · A. The stock bore on a 305 is 3.736 inches. Bringing it out to a standard bore for a 350 would require a 4.00-inch bore, which would remove more than 1/4 inch from the cylinder walls. Production 305 blocks will not accept that much overbore. The good news is that Gen I 350 blocks are very plentiful. WebFeb 15, 2007 · Also, I have helped a friend build a 383 using a small journal 327 block and a 400 crank. The 400 mains were cut down to 350 size, then the 327 block was line bored to the bigger main bore size of a 350 block. Actually, it was a rather straight forward process. The 2 bolt main caps were retained but the longer 350 bolts (actually studs) were used.
WebMay 24, 2000 · I already have a Monte that has a 350 in it but I am afraid that the motor will go soon. I am looking for 305s but am wondering if I could pull of boring it to a 350. If I …
WebMar 30, 2024 · Most aftermarket head manufacturers were quick to offer performance cylinder heads for the 4.0 inch bore 302, 327, and 350 motors, yet few stepped up and made heads specifically sized to work with the … camhs wiltshireWebDec 20, 2013 · a 305 has a piston dome area of about 11 sq inches, a 350 with its larger bore has a piston dome area of about 12.59 sq inches, if both have a peak cylinder pressure of 600psi that 6600 pounds of force exerted, for an instant or two on the 305 and 7550 pounds of force exerted pounds of force exerted, for an instant or two on the 350 piston camhs wiltshire helplineWebApr 2, 2014 · Apr 2, 2014. #2. Re: Mercruiser 305 to 350 swap. jehlinge said: I have a 2006 Bayliner with a Mercruiser 305 motor. The time has come to replace it. I have searched the forums here and it seems a pretty common recommendation to replace the 305 with a 350. However, in most threads, this conversion is done on older boats with carbureted … camhs wiltshire referralWebOct 10, 2008 · Subtract 305 from 350 and that will give you the difference (or interval) between the two numbers:- the answer is 45. However, if you mean what is the … coffee shops on alberta st portlandWebMar 26, 2005 · Even the crank is the same except for the balance (and hence a different balancer but they to will interchange). Yes, you can put 350 heads on it but the old ticket used to be to put 305 heads on a 350 as they have smaller compression chambers. As was stated, .060 is the max you can bore one and it will net only little gains in hp (mostly from ... coffee shops on bribie islandWebThe stock 305 and 350 TBI unit has 2 (1 11/16″) bores which flow 450 cfm of air. Up to 230hp engines that air flow is fine. you can do the ultimate TBI mods to the stock 42mm TBI unit and get that air flow up to 500cfm without increasing that bore diameter which is plenty for any 305 engine that you can run with TBI. 7. Injectors. coffee shops on bernard kelownaWebMar 20, 2002 · That would sound closer to a 350 End Gap number. The 'factory' spec.s run in the 0.010 - 0.020 range for the top ring and 0.013 - 0.025 for the 2nd. ring. I use 0.015 (top)& 0.018 (2nd) for most of the street small blocks I build. If you are reading 0.030 + for the ring gaps, what is the bore taper reading? ( in service readings should be in ... coffee shops on bold street