Originally Posted by HardcoreB
Originally Posted by Al_Alguire
Originally Posted by Mbrown

Thank for all your input guys!

110 is what we normally run. It is readily available at the pump in our area.

My father in law would really like to get into the 5's , but he ties my hands. I can't lighten the car at all. No rear gear change, no aftermarket block. We have been making north of 700 hp for 10 or 11 years on an oem block with no failures. I'm afraid that will change if i increase stroke or rpm range. So I am just trying to maximize what we got, within the rpm range we are currently running. I talked to him last night about a 4.5 bore block. He feels that he is too old to get his money's worth out of it.


Maybe also start looking at the rest of the car. Maximizing all the areas may help get him there as well. Trans gearing, converter, shocks, chassis set up, lots of ways you can lighten the car that do not change its appearance, titanium and aluminum fasteners for instance. Ceramic bearings can be used in many spots on the car to improve rolling resistance, as well as aftermarketbrakes that have less or no drag.

A vacuum pump and small ring pack will give you some power but its not going to be that significant. Combinng that will proper piston architecture, more compression is always a good way to make power. Combine that with a small ring pack and vaccum pump and it will ad up.
Agree with all this, that's where my mind was thinking anyway. Additionally "you're" asking a lot from a stock block and you should have him consider if the stocker breaks, how much is ANOTHER rebuild going to cost (TIME/money). Doesn't seem like there's a bunch of low-hanging fruit that won't add additional stress to the block BUT, give us a break-down of the total engine combo.


4.375 bore. 4.150 Eagle crank with chevy pin. Eagle rods. Srp flat top pistons, BCR caps and girdle system. Compression comes out to 12.2
The cam is a Jones solid roller. 268@ .050 intake. 276@ .050 exhaust. .465 lobe with 1.6 rockers. On a 112 lsa. IC is installed at 107
Victor max wedge heads with a ton of work in them. Super victor intake. 1050 dominator carb. I run 33 degrees timing with 110 fuel.
I don't disagree with the comments about stock block. I have been scared of it for awhile. I would have to add it all up, but I bet we have close to 1000 passes on this block.

The car is 3460 give or take a few pounds. Papaw has gained some weight lol. 4.10 gear 4500 stall. 28x10.5 Hoosiers. I worked on getting 60ft times down last year. Went from high 1.4's to low 1.3's. It made no difference in ET. The car mphs better with slower 60ft times. Double adjustable coilovers on front. Cal tracs with double adjustable on rear.