trans engine wll they fit? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**truckdude239** · 10-19-2005, 09:30 AM

hey everyone i just got an 350 engine for my truck paid 400 buxs for it but i was wonder if it will fit my transmission i have the orginal 3 speed tranny that came in the truck and its bolted to and 307 will they fit?

**truckdude239** · 10-19-2005, 09:41 AM

don't know if matters but the new engine has points too so going to switch that to hei when i install it

**VetteVet** · 10-19-2005, 11:58 AM

It should bolt up fine but you will need to change every thing from the crankshaft back so the clutch and pressure plate will bolt up. The flywheel for a standard shift is much thicker and heavier than the flexplate for an automatic trans. this would be a good time to install all new parts if there are many miles on the old clutch. The flywheel may need resurfacing too so maybe a complete package is in order. Don't forget the pilot bearing in the end of the crank or you will have vibration problems.
Hei swaps are simple even though so many ppl seem to have a hard time doing it. This is one of the better upgrades you can do and if you follow the steps outlined many times here in the forums you will have no trouble. Another easy upgrade is to an internal regulated alternator. Good luck and welcome to the boards.

krue · 10-19-2005, 12:17 PM

If your already running a small block, you should be able to throw the 350 in there an use the stuff you already have. Check the FAQ page for lots of threads on the HEI swap.

junkyardjohn · 10-19-2005, 12:27 PM

EVERYTHING WILL FIT. 305s, 307s & 350s ALL SHARE THE SAME SIZE BLOCK ON THE OUTSIDE. THE MAIN DIFFERENCE IS IN THE BORE & STROKE. JOHN

70rs/ss · 10-19-2005, 01:08 PM

Quote:

Originally Posted by junkyardjohn

EVERYTHING WILL FIT. 305s, 307s & 350s ALL SHARE THE SAME SIZE BLOCK ON THE OUTSIDE. THE MAIN DIFFERENCE IS IN THE BORE & STROKE. JOHN

One further, all chevrolet corporate blocks use identical trans bellhousing. 283,302, 305, 307, 327, 350, 400, 396, 400, 402, 454, 502, 572. whew, did I miss any? These will all bolt in place of any of the other, just use the parts from the 307 (flywheel, clutch, pressure plate, etc) like in the above post and all will go well. I just purchased a RAM oe replacement 11" clutch from SUMMIT for like $160 and while you have it out and apart now if the time to do it so you do not have to redo this in a month.

mike

**truckdude239** · 10-20-2005, 01:22 AM

oh well i thought i was getting me an 350 went to pick it up today not worth the 20 buxs in gas i paid to go and get it he sat it on the back of the truck i put it in revse nailed t5he gas and hit the brake motr has 240k miles on it and lhas a cracked block man i was mad

cst70rocket · 10-20-2005, 08:07 AM

Quote:

Originally Posted by 70rs/ss

One further, all chevrolet corporate blocks use identical trans bellhousing. 283,302, 305, 307, 327, 350, 400, 396, 400, 402, 454, 502, 572. whew, did I miss any? These will all bolt in place of any of the other, just use the parts from the 307 (flywheel, clutch, pressure plate, etc) like in the above post and all will go well. I just purchased a RAM oe replacement 11" clutch from SUMMIT for like $160 and while you have it out and apart now if the time to do it so you do not have to redo this in a month.

mike

262,265,267,366,427,496 can am

10-19-2005, 09:30 AM	#1
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	trans engine wll they fit? hey everyone i just got an 350 engine for my truck paid 400 buxs for it but i was wonder if it will fit my transmission i have the orginal 3 speed tranny that came in the truck and its bolted to and 307 will they fit?

10-19-2005, 09:41 AM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: trans engine wll they fit? don't know if matters but the new engine has points too so going to switch that to hei when i install it

10-19-2005, 11:58 AM	#3
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,723	Re: trans engine wll they fit? It should bolt up fine but you will need to change every thing from the crankshaft back so the clutch and pressure plate will bolt up. The flywheel for a standard shift is much thicker and heavier than the flexplate for an automatic trans. this would be a good time to install all new parts if there are many miles on the old clutch. The flywheel may need resurfacing too so maybe a complete package is in order. Don't forget the pilot bearing in the end of the crank or you will have vibration problems. Hei swaps are simple even though so many ppl seem to have a hard time doing it. This is one of the better upgrades you can do and if you follow the steps outlined many times here in the forums you will have no trouble. Another easy upgrade is to an internal regulated alternator. Good luck and welcome to the boards. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. Last edited by VetteVet; 10-19-2005 at 12:00 PM.

10-19-2005, 12:17 PM	#4
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Re: trans engine wll they fit? If your already running a small block, you should be able to throw the 350 in there an use the stuff you already have. Check the FAQ page for lots of threads on the HEI swap. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

10-19-2005, 12:27 PM	#5
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,425	Re: trans engine wll they fit? EVERYTHING WILL FIT. 305s, 307s & 350s ALL SHARE THE SAME SIZE BLOCK ON THE OUTSIDE. THE MAIN DIFFERENCE IS IN THE BORE & STROKE. JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

10-20-2005, 01:22 AM	#7
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: trans engine wll they fit? oh well i thought i was getting me an 350 went to pick it up today not worth the 20 buxs in gas i paid to go and get it he sat it on the back of the truck i put it in revse nailed t5he gas and hit the brake motr has 240k miles on it and lhas a cracked block man i was mad



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